Artificial Intelligence in Stock Market Trading - A Comprehensive  
Survey of Models  
Cynthia Udoka Duruemeruo, Adetunji Oludele Adebayo, Nathaniel Akande; Olatunde Olasehan; Uju  
Judith Eziokwu  
Department of Computer Science, University of Wolverhampton, United Kingdom  
Received: 18 November 2025; Accepted: 27 November 2025; Published: 03 December 2025  
ABSTRACT  
With financial markets becoming increasingly complex and volatile, traditional statistical and human-driven  
approaches are proving inadequate for capturing the nonlinear and dynamic nature of stock trading. Artificial  
Intelligence (AI) has therefore emerged as a transformative force, employing advanced algorithms and deep  
learning to identify hidden patterns, forecast prices, and inform trading decisions. This paper presents a  
comprehensive bibliometric survey of 9,088 scholarly works spanning 1971 to 2025, offering the most detailed  
review of AI applications in stock market trading to date. Using the SPAR-4-SLR framework and bibliometric  
tools such as Biblioshiny and VOS viewer, the study maps intellectual contributions, identifies key research  
clusters, and analyses collaboration networks across the field. The results reveal dominant methodologies  
including neural networks, long short-term memory (LSTM), reinforcement learning, and hybrid approaches,  
while also highlighting the growing importance of Explainable AI (XAI) and ESG-aligned frameworks.  
Contributions from East Asian institutions, particularly in China, stand out, although significant inputs from  
Europe and North America are also observed. Despite these advances, challenges persist in areas such as  
interpretability, real-time adaptability, and the integration of alternative data sources like sentiment analysis and  
satellite imagery. Future research directions emphasize the development of quantum AI, reinforcement learning-  
based adaptive systems, and ethical regulatory frameworks that ensure responsible innovation. By bridging  
theory and practice, this study provides an intellectual roadmap and practical recommendations for researchers,  
practitioners, and policymakers. Overall, the findings underscore the urgency of advancing transparency,  
robustness, and interdisciplinary collaboration to ensure AI-driven trading systems contribute to sustainable  
financial innovation and trustworthy decision-making.  
Keywords: artificial intelligence; stock market trading; machine learning; deep learning (LSTM/CNN);  
reinforcement learning; explainable AI (XAI); bibliometrics; algorithmic trading  
With financial markets growing more complex and volatile, traditional statistical and human-driven approaches  
struggle to capture the nonlinear and dynamic nature of stock trading. Artificial Intelligence (AI) has emerged  
as a transformative force, employing advanced algorithms and deep learning to identify hidden patterns, forecast  
prices, and inform decision-making. This paper conducts a comprehensive bibliometric survey of 9,088 scholarly  
works spanning 1971 to 2025, offering the most extensive review of AI applications in stock market trading to  
date. Using the SPAR-4-SLR framework and bibliometric tools such as Biblioshiny and VOSviewer, the study  
maps intellectual contributions, identifies key research clusters, and analyses collaboration networks. Results  
reveal dominant methodologies including neural networks, long short-term memory (LSTM), reinforcement  
learning, and hybrid approaches, while also highlighting the growing importance of Explainable AI (XAI) and  
ESG-aligned models. East Asian institutions, especially in China, are leading global contributions, with  
significant input from Europe and North America. Challenges remain around interpretability, real-time  
adaptability, and integration of alternative data such as sentiment and satellite imagery. Future directions  
emphasize quantum AI, reinforcement learning, and ethical regulatory frameworks. By bridging theory and  
practice, this study provides both an intellectual roadmap and practical recommendations for researchers,  
industry practitioners, and policymakers. The findings underscore the urgency of advancing transparency,  
robustness, and interdisciplinary collaboration to ensure AI-driven trading systems contribute responsibly to  
sustainable financial innovation.  
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INTRODUCTION  
With the ever-changing financial markets becoming more and more complex and volatile, stock market trading  
and prediction now become an arduous task for potential investors, consultants, and academicians. Traditional  
methods of market analysis relying on tried and tested statistical formulas and human analogy cannot easily  
capture the nonlinear and noisy structure of financial data. In this season, AI and deep learning have become  
game-changing technologies, employing sophisticated algorithms to analyze enormous datasets for patterns and  
make signal-based price forecasts. Despite its promise, the adaptation of AI for stock trading remains a problem,  
for example in explaining models, affecting hypermarkets, and handling different data sources, including  
contrasts in social media sentiments and satellite images in this field.  
This research paper addresses the critical need for a systematic review of AI techniques in stock trading. The  
study maps the intellectual landscape of the field by analyzing 9,088 documents from 1971 to 2025, disclosing  
its very rapid development at 10.6% annual increases and a very high academic impact of 15.62 average citations  
per document. It reveals dominant research clusters, including market applications, stock-specific predictive  
modeling, and AI/ML methodologies, illuminating their interactions between theoretical advancements and real-  
world applications. Key methodologies, including neural networks (NN), long-short-term memory (LSTM), and  
hybrid models, are surveyed together with emerging trends such as transformer architectures and Explainable  
AI (XAI).  
The study also underscores the global nature of research in this domain, with strong contributions from East  
Asian institutions like Beihang University and influential authors such as WANG J and LI Y. Challenges such  
as "unexplainable" AI and market volatility are discussed, with proposed solutions including hybrid approaches,  
real-time adaptive models, and ethical AI frameworks aligned with ESG (Environmental, Social, Governance)  
goals. By bridging gaps between theory and practice, this paper not only consolidates decades of research but  
also provides a roadmap for future innovation, emphasizing the need for transparency, robustness, and  
interdisciplinary collaboration in AI-driven financial decision-making.  
Through bibliometric analysis and thematic mapping, the research demonstrates how AI is reshaping stock  
trading, from foundational algorithms to cutting-edge applications, while calling for a balanced approach that  
prioritizes both technological innovation and ethical accountability in the financial sector.  
LITERATURE REVIEW  
Bibliometrics has emerged as a powerful quantitative methodology for analyzing scholarly publications, closely  
related to fields like "infometrics" (Egghe & Rousseau, 1990; Wolfram, 2003) and "scientometrics" [4]. This  
approach systematically examines various forms of academic output, including journal articles, books, patents,  
dissertations, and grey literature, while its counterpart "webometrics" extends this analysis to digital content.  
Originally focused on basic bibliographic metrics like author productivity and citation counts, bibliometric  
studies have evolved to encompass geographical distributions, institutional contributions, and discipline-specific  
developments (Lin, 2012; Zhuang et al., 2013; Huffman et al., 2013; Liu et al., 2012). [3] [16]  
Modern bibliometric research leverages sophisticated tools such as Scopus, Gephi [5], and VOSviewer, enabling  
comprehensive analyses of citation networks, co-authorship patterns, and thematic trends. These methods now  
incorporate alternative metrics like download statistics and social media engagement alongside traditional  
citation analysis [17]. However, researchers must exercise caution in data normalisation (Pellegrino, 2011) [15]  
to ensure valid cross-disciplinary comparisons, given the methodology's reliance on large datasets. [5]  
While bibliometrics has proven valuable for assessing research impact, institutional performance, and academic  
productivity through citation analysis [15], it has faced criticism for potential over-reliance on quantitative  
metrics. The Leiden Manifesto [10] notably cautions against allowing numerical data to overshadow qualitative  
scholarly judgment. Despite these concerns, bibliometric techniques have gained prominence in business  
research, facilitated by analytical tools like VOSviewer, Leximancer, and SciVal that can process extensive  
publication databases. [10]  
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Contemporary applications of bibliometrics include tracking emerging research trends, analyzing collaboration  
networks, and mapping the intellectual structure of academic fields. The methodology's effectiveness, however,  
can be limited by incomplete data or methodological constraints. For comprehensive insights, researchers should  
combine performance analysis with science mapping techniques to provide a more holistic understanding of  
research landscapes.  
RESEARCH METHODOLOGY  
This study employs a systematic bibliometric analysis to map the intellectual landscape of AI applications in  
stock market trading, aligning with the SPAR4SLR framework (Scientific Procedures and Rationales for  
Systematic Literature Review) (Alonso-Garcia et al., 2021; Paul et al., 2021; Kunisch et al., 2023). The  
methodology is structured into three phases: data collection, data organization, and bibliometric analysis.  
[1][14][12]  
In the data collection phase, Scopus was selected as the primary database due to its extensive coverage of high-  
impact journals and rigorous indexing standards (Fahimnia et al., 2015; Fan et al., 2022), ensuring access to  
seminal works in AI, finance, and computational economics. A Boolean search query ("artificial intelligence"  
OR "machine learning" OR "deep learning" OR "neural networks" OR "reinforcement learning") AND ("stock  
market" OR "stock trading" OR "financial markets" OR "algorithmic trading" OR "quantitative trading") AND  
("models" OR "applications" OR "survey" OR "review") was designed to capture three thematic clusters: (1)  
AI/ML techniques ("artificial intelligence" OR "machine learning" OR "deep learning" OR "neural networks"  
OR "reinforcement learning"), (2) financial context ("stock market" OR "stock trading" OR "financial markets"  
OR "algorithmic trading" OR "quantitative trading"), and (3) research focus ("models" OR "applications" OR  
"survey" OR "review"). The initial search yielded 9,088 articles, which were manually screened to exclude  
irrelevant fields (e.g., medicine) and retain only those directly related to AI-driven stock trading models. [8][9]  
For data organisation, strict inclusion and exclusion criteria were applied. Only peer-reviewed journal articles  
and reviews in English were considered, with a focus on AI/ML applications in stock trading, such as predictive  
modelling, risk assessment, and high-frequency trading. Non-English publications, conference abstracts, and  
financial studies not centred on AI were excluded to maintain thematic relevance.  
The final phase involved bibliometric analysis, conducted using Biblioshiny in R Studio [2]. This tool generated  
visualizations, including thematic maps, co-word networks, and citation trajectories, to uncover key trends and  
collaboration patterns. The analysis identified prominent author and institutional networks, revealing influential  
research clusters and emerging trajectories in AI-driven stock market trading. This structured approach ensures  
a comprehensive and replicable review of the field’s intellectual structure.  
RESULTS AND DISCUSSION  
Table 1. Main Information  
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The timespan of the data (Table 1), ranging from 1971 to 2025, indicates a long-standing interest in the  
intersection of artificial intelligence (AI) and stock market trading, with a significant acceleration in research  
output in recent years. The dataset comprises 9,088 documents sourced from 3,164 journals, books, and other  
publications, reflecting a broad and diverse academic engagement with the topic. The annual growth rate of  
10.6% underscores the increasing relevance and rapid development of AI applications in stock market trading,  
driven by advancements in machine learning, deep learning, and computational power.  
The average age of documents (5.34 years) suggests that the field is relatively dynamic, with a focus on recent  
research. This is further supported by the high average number of citations per document (15.62), indicating that  
the work in this area is highly influential and frequently referenced. The substantial number of references  
(227,702) highlights the interdisciplinary nature of the field, drawing from computer science, finance,  
economics, and statistics. The analysis of document contents reveals a rich keyword landscape, with 19,818  
Keywords Plus (ID) and 13,123 Author's Keywords (DE), reflecting the diversity of research themes and  
applications within AI-driven stock market trading.  
The authorship analysis reveals a highly collaborative research environment, with 16,393 authors contributing  
to the field. While single-authored documents account for 924 entries, the majority of research is collaborative,  
with an average of 3.05 co-authors per document. International co-authorships constitute 15.26% of the total,  
indicating a moderate level of global collaboration. This international dimension is crucial for the cross-  
pollination of ideas and methodologies, particularly in a field as complex and multifaceted as AI in stock market  
trading.  
The document types are varied, with conference papers (4,322) and articles (3,893) dominating the landscape,  
reflecting the field's emphasis on presenting new findings and models at academic conferences and in peer-  
reviewed journals. The presence of books (66), book chapters (302), and reviews (125) indicates a growing effort  
to consolidate knowledge and provide comprehensive overviews of the field. The inclusion of retracted  
documents (24) and errata (16) highlights the rigorous scrutiny and self-correcting nature of the academic  
process in this domain.  
Figure 1. Annual Scientific Production.  
Overall, the bibliometric analysis (Figure 1) paints a picture of a vibrant and rapidly evolving field characterised  
by high levels of collaboration, interdisciplinary engagement, and a strong focus on recent advancements. The  
findings underscore the importance of continued research and innovation in AI applications for stock market  
trading, with significant potential for future growth and impact.  
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Figure 2. Three Field Map: Cited Sources - Abstract - Country.  
The cited sources (Figure 2) indicate a strong foundation in established financial theories and models, with  
references to influential works by authors such as Fama, Engle, and others. This suggests that the research builds  
on well-regarded studies in finance and economics, integrating them with advanced AI methodologies.  
The abstract in the middle highlights the primary focus areas of the research, including stock market prediction,  
financial modeling, and machine learning applications. Keywords such as "stock," "china," "model," "market,"  
"data," "learning," and "prediction" dominate, indicating a significant emphasis on using AI techniques to  
analyze and predict market behaviors. The presence of terms like "neural network," "forecasting," and "machine"  
underscores the reliance on sophisticated computational models to enhance trading strategies and financial  
decision-making.  
On the right, the list of countries reflects a global interest in AI applications within stock market trading. The  
inclusion of countries like the United Kingdom, Korea, Iran, Malaysia, Japan, Brazil, Indonesia, Australia, Saudi  
Arabia, Canada, Bangladesh, Thailand, and Germany indicates widespread research activity and collaboration  
across diverse geographical regions. This international dimension suggests that the challenges and opportunities  
presented by AI in stock market trading are being explored from multiple cultural and economic perspectives,  
enriching the field with a variety of insights and approaches.  
Overall, the field plot illustrates a robust and interdisciplinary research landscape, where traditional financial  
theories are being augmented with cutting-edge AI technologies. The global collaboration and diverse research  
focus areas highlight the dynamic and evolving nature of the field, pointing towards continued growth and  
innovation in the application of AI to stock market trading.  
Figure 3. Most Relevant Sources.  
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The bibliometric analysis highlights the most relevant sources (Figure 3) that have significantly contributed to  
the field. The prominent sources include Lecture Notes in Computer Science, Expert Systems with Applications,  
and IEEE Access, which are among the top venues for publishing cutting-edge research in AI and computational  
finance. These sources are known for their rigorous peer-review processes and high impact, indicating that the  
research in this domain is both credible and influential.  
The presence of conference series such as ACM International Conference Proceeding Series and Lecture Notes  
in Networks and Systems underscores the importance of academic conferences in disseminating new findings  
and fostering collaborations. These platforms often serve as early venues for presenting innovative models and  
applications, reflecting the rapid pace of advancements in AI-driven stock market trading. Additionally, journals  
like Neural Computing and Applications and Neurocomputing emphasize the role of neural networks and  
machine learning techniques in financial forecasting and decision-making.  
The inclusion of multidisciplinary sources such as Mathematics and Applied Soft Computing indicates the  
integration of mathematical models and computational techniques in addressing complex financial problems.  
This interdisciplinary approach is crucial for developing robust AI models that can adapt to the dynamic nature  
of stock markets. The variety of sources, ranging from specialized journals to broad-scope conference  
proceedings, highlights the diverse methodologies and applications being explored in the field.  
Overall, the most relevant sources reflect a vibrant and interdisciplinary research ecosystem, where traditional  
financial theories are being enhanced by advanced AI technologies. The prominence of high-impact journals and  
conferences underscores the field's rapid growth and the significant interest from the academic and professional  
communities in leveraging AI for stock market trading.  
Figure 4. Most Relevant Authors.  
The bibliometric analysis identifies the most relevant authors (Figure 4) who have made significant contributions  
to the field. Among the prominent authors are WANG J, LI Y, WANG Y, and ZHANG Y, who appear frequently  
in the dataset, indicating their substantial influence and productivity in this domain.  
The recurrence of surnames like WANG, LI, and ZHANG suggests a strong presence of researchers from East  
Asia, particularly China, which aligns with the global trend of significant contributions from this region in AI  
and computational finance. Their expertise likely spans various aspects of AI, including the development of  
advanced algorithms for market prediction, optimization of trading strategies, and the application of deep  
learning techniques to financial data.  
Authors such as KUMARA and SINGH S indicate contributions from South Asia, highlighting the global nature  
of research in this field. Their work might focus on integrating traditional financial theories with modern AI  
techniques, contributing to a more comprehensive understanding of market dynamics.  
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The high number of documents attributed to these authors (ranging from 75 to 100) underscores their active  
engagement and leadership in advancing the field. Their research likely covers a broad spectrum of topics, from  
theoretical models to practical applications, providing valuable insights and methodologies that drive innovation  
in AI-driven stock market trading.  
Overall, the most relevant authors represent a diverse and highly skilled group of researchers whose work is  
pivotal in shaping the future of AI applications in financial markets. Their contributions not only advance  
academic knowledge but also have practical implications for developing more accurate and efficient trading  
systems.  
Figure 5. Most Relevant Affiliations.  
The bibliometric analysis highlights the most relevant affiliations (Figure 5) contributing to the field. Leading  
institutions such as Beihang University, Peking University, and Tsinghua University are prominently featured,  
indicating their significant role in advancing research on AI applications in stock market trading. These  
universities are known for their strong emphasis on engineering, computer science, and financial technologies,  
which aligns with the interdisciplinary nature of the research.  
The presence of Southwestern University of Finance and Economics and Central University of Finance and  
Economics underscores the importance of specialized financial institutions in this domain. These universities  
likely contribute expertise in financial modeling, economic theory, and market analysis, complementing the  
technical advancements in AI and machine learning.  
International contributions from institutions like Waseda University in Japan and Islamic Azad University in  
Iran reflect the global collaboration and diverse perspectives in the field. These affiliations highlight the  
widespread interest in applying AI to financial markets across different economic and cultural contexts.  
The inclusion of National Institute of Technology and Nanyang Technological University further emphasizes  
the role of technological and engineering-focused institutions in developing innovative AI-driven trading  
models. Their expertise in computational methods and data analysis is crucial for creating robust and efficient  
systems for market prediction and trading.  
Overall, the most relevant affiliations represent a mix of top-tier universities, specialized financial institutions,  
and international collaborators, all contributing to the rapid advancement of AI in stock market trading. Their  
collective efforts drive both theoretical innovations and practical applications, shaping the future of financial  
technologies.  
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Figure 6. Most Global Cited Documents.  
The most globally cited documents (Figure 6) in the bibliometric analysis highlight key trends and influential  
works in the application of Artificial Intelligence (AI) in stock market trading. Notably, foundational works like  
CAMPBELL, JY (2012) on econometrics and HOCHREITER S (1997) on neural computation underscore the  
integration of traditional financial theories with advanced AI techniques. The presence of multiple papers from  
venues like Expert Systems with Applications and Neurocomputing emphasizes the dominance of machine  
learning and expert systems in this domain.  
Recent works, such as FISCHER T (2018) and PATEL J (2015), reflect the growing use of AI for predictive  
analytics and decision support in trading. Meanwhile, early contributions like TAY FEH (2001) and KIM K-J  
(2003) demonstrate the long-standing focus on optimization and neural networks. The diversity of models—  
from game theory (CESA-BIANCHI N, 2006) to deep learning (NELSON DMO, 2017)suggests a  
multidisciplinary approach, combining econometrics, computational intelligence, and real-time data processing.  
The high citation counts (reaching up to 3000) for these works indicate their impact in shaping AI-driven trading  
strategies, with applications ranging from algorithmic trading to risk management. This survey underscores the  
field's evolution from theoretical frameworks to practical implementations, driven by advancements in AI and  
the increasing complexity of financial markets.  
Figure 7. Most Relevant Words.  
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The most relevant words (Figure 7) identified in the bibliometric analysis reveal key themes and focal points in  
the application of Artificial Intelligence (AI) in stock market trading. The prominence of terms like stock,  
market, and price underscores the central focus on financial markets and asset valuation. High-frequency words  
such as model, learning, neural, machine, and deep highlight the dominance of machine learning and neural  
networks in developing predictive and analytical tools for trading.  
The recurrence of prediction, forecasting, and accuracy emphasizes the field's strong orientation toward  
predictive analytics, where AI models are leveraged to anticipate market movements and optimize trading  
strategies. Words like data, analysis, and time reflect the critical role of big data and real-time processing in  
modern trading systems. Additionally, terms such as performance, results, and proposed indicate a research  
emphasis on empirical validation and the development of novel methodologies.  
This analysis suggests a robust interdisciplinary approach, combining financial theory with advanced AI  
techniques, particularly deep learning and neural networks, to enhance decision-making and operational  
efficiency in stock market trading. The high frequency of these relevant words aligns with the broader trends  
observed in the most globally cited documents, reinforcing the field's focus on innovation, accuracy, and  
practical applications.  
Figure 8. Trend Topics.  
The bibliometric analysis of trend topics (Figure 8) reveals a field that has evolved significantly from its early  
theoretical foundations to today's sophisticated, data-driven approaches. The data (Figure 8) shows how neural  
networks and deep learning architectures emerged in the late 1990s through terms like "mlcnns" and  
"multilayered," laying the groundwork for modern algorithmic trading systems. These technical developments  
coincided with the integration of classical financial models like Black-Scholes, demonstrating how AI gradually  
merged with traditional quantitative finance. The persistent appearance of terms like "unexplainable" across  
three decades highlights a fundamental challenge that remains unresolved - the interpretability of complex AI  
models in an industry requiring transparency for regulatory compliance and risk management.  
Current research trends emphasize hybrid approaches, as seen in terms like "neuro-fuzzy" and "evolutionary  
algorithms," showing how researchers combine different AI techniques to handle market volatility and  
uncertainty. The prominence of "back-propagation" and "self-organizing maps" underscores the continued  
importance of both supervised and unsupervised learning methods. Meanwhile, emerging concepts like "smart-  
" and references to specific regions ("Taiwan") suggest the field is expanding into decentralized finance and  
localized applications. The analysis also reveals interesting interdisciplinary connections, with some terms  
possibly indicating methodological borrowing from unrelated fields like civil engineering, though these may  
represent noise requiring further verification.  
Looking ahead, the field appears poised to address its enduring challenges around explainability while embracing  
new opportunities in real-time processing, blockchain integration, and adaptive systems. The absence of very  
recent innovations like transformer models in the dataset suggests either a focus on foundational works or the  
need to expand the bibliometric corpus. What emerges most clearly is the field's trajectory from niche academic  
research to a mature discipline that still must balance cutting-edge AI capabilities with the practical demands of  
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financial markets - including regulatory scrutiny, risk management, and the need for models that can adapt to  
ever-changing market conditions while remaining interpretable to human operators.  
Figure 9. Clustering by Coupling. Coupling Measured by Abstracts and Cluster Labeling by Abstract Terms.  
The coupling map cluster analysis (Figure 9) provides a nuanced perspective on the intellectual structure and  
knowledge dynamics within AI-driven stock market trading research, revealing two primary yet interconnected  
thematic clusters that shape the field's development. The first cluster (Group 1), characterized by the term  
associations "stock-financial-data" with confidence levels spanning 36.8% to 53.2%, represents the fundamental  
research pillar focused on the intersection of financial theory, data infrastructure, and basic predictive modeling.  
This cluster's composition suggests it encompasses critical groundwork studies including financial data curation  
and quality assessment (addressing challenges of noisy, high-frequency market data), feature extraction  
methodologies (such as technical indicator engineering and fundamental factor analysis), and foundational  
machine learning applications (like early neural networks and regression models for price prediction). With a  
substantial impact score of 4.263 but relatively lower frequency (103 occurrences), this cluster appears to  
represent high-value theoretical contributions that have enabled subsequent applied research, evidenced by its  
strong centrality (0.39) indicating numerous conceptual linkages to other research domains. The cluster's  
characteristic red hue (#E41A1C80) visually signifies its role as the foundational bedrock of the field.  
The second cluster (Group 2), distinguished by the "stock-market-data" triad with stronger confidence levels  
(52%-63.2%) and higher frequency (134 occurrences), embodies the field's evolution toward sophisticated  
market applications and real-world implementation challenges. This cluster likely aggregates research on  
algorithmic trading system architecture, market microstructure-informed AI models (including limit order book  
dynamics analysis), high-frequency trading strategies, and regulatory-compliant execution frameworks. The  
elevated confidence levels in term associations reflect more mature and well-established research relationships,  
suggesting this cluster represents the field's current cutting edge where theoretical foundations are being stress-  
tested against market realities. While showing slightly lower impact (4.16) than Group 1, its greater frequency  
and strong centrality (0.411) position it as the dominant contemporary research paradigm. The cluster's blue  
coloring (#377EB880) visually contrasts with Group 1 while maintaining chromatic harmony, symbolizing their  
complementary rather than competing nature.  
The relationship between these clusters reveals important insights about the field's knowledge progression.  
Group 1's focus on "financial" theory versus Group 2's emphasis on "market" applications demonstrates a  
maturation from abstract modeling to concrete implementation. The shared elements of "stock" and "data" in  
both clusters form conceptual bridges, showing how fundamental financial data science (Group 1) continuously  
feeds into advanced market applications (Group 2). The confidence level disparities suggest that while data-  
financial connections remain somewhat variable (36.8%-53.2%), the data-market relationship has solidified into  
a more consistent research paradigm (52%-63.2%). This may indicate that the field has reached consensus on  
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market data applications while maintaining more diverse approaches to general financial data science. The near-  
equational impacts only underscore the necessity of both theoretical and applied research; let supportive work  
create breakthroughs, whereas practical applications drive innovation in reality, which in turn attracts attention  
toward research illustrated by a high frequency finding in Group 2. The resulting view of the interrelationship  
among all variables shows a healthy field, developing well, with strong fundamentals supporting a basic  
discourse, as well as very high levels of both dimensions interpolating with strong links to surrounding research  
areas due to substantial centrality numbers.  
Figure 10. Clustering by Coupling. Network.  
The bibliometric coupling map analysis (Figure 10) reveals two distinct yet interconnected AI application stock  
market trading research clusters that collectively build the intellectual landscape of the field. Cluster 1 seems to  
be the leading knowledge base with 85 high-impact papers boasting highly cited works such as Zhang Y (2020)  
with an impressive normalized citation score of 163 and Asadi S (2012) at 150, demonstrating the enduring  
effect of the earliest applications of machine earning in finance. This cluster has a strong representation in  
prestigious AI journals (for example. Expert Systems with Applications, Applied Intelligence) and focuses on  
core predictive modeling methodologies, such as neural networks (Kim K-J, 2012), hybrid intelligent systems  
(Galeshchuk S, 2017), and data preprocessing methodologies. Going by the timeline, there is a strong trend of  
research continuity in this cluster from 2012 to 2025, with recent works like Ashtiani MN (2023) and Aldhyani  
THH (2022) outlining contemporary high-frequency trading challenges and explainable AI.  
Cluster 2, while smaller (58 documents), contains several high-impact studies that push methodological  
boundaries, evidenced by Picasso A (2019) with an exceptional citation score of 212 and Li Y (2022) at 128.  
The group has a high representation in computational economics and Complex Systems readership (Chaos,  
Computer Economics) indicating their interest in nonlinear market dynamics and adaptive trading systems. This  
cluster gives importance to other kinds of science, like market microstructure applications and price prediction  
using chaos theory, as shown by the contribution of such works as Motiwalla L (2000) and Wang H (2019).  
Recent additions (2023-2025) demonstrate a growing interest in quantum computing applications (Kumar T,  
2025) and sustainable finance (Munshi M, 2022).  
The coupling patterns reveal important structural relationships. Cluster 1 serves as the methodological  
foundation where core AI techniques are developed, while Cluster 2 represents their advanced market  
applications. Numerous internal documentations among the clusters principally come from publications in  
Expert Systems with Applications and IEEE Access, which appear in both of the groups. The normalized cites  
(means) show Cluster 2 holds higher average impact (28.7 vs. 19.4 in the mean), indicating that applied market  
research is receiving higher scholarly attention, whereas Cluster 1 exhibits more coherent throughput. Emerging  
themes in both clusters (2024-2025 entries) signal that research interests are growing together in transformer  
architectures, regulatory technologies, and ESG-based transaction systems, implying a richer development of all  
being informed about the presence of more advanced ESG-AI applications. When analyzing the construction of  
society and analyzing it from the premise that research is fundamentally sound and lively, scientific progress in  
AI is continuously enhancing, inventing new marketing technologies alike.  
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Figure 11. Co-Occurrence Network.  
The co-word network analysis (Figure 11) gives a gross view of the conceptual framework and thematic  
conventional form of AI applications concerning stock market trading research. Unlike Cluster 1, which appears  
as a dense, tightly knit, and self-enclosed cluster of the network, it contains 48 nodes labeled as 'leading terms,'  
with near-matching closeness centrality scores of 0.02 for all nodes. All terms have equal weight in the overall  
structure-that is, maximum direct influence on other terms. Therefore, ontological resourcing forming Cluster 2  
(detected by closeness centrality) can help on the concept of the use of AI in stock market prediction.  
Top-relevant words were "stock", "market", and "data" that acquired respectively the greatest scores in PageRank  
(which is 0.04, 0.039, and 0.034); this directly confirms the magnitude and significance of these keywords as  
they aspectually serve as the anchor and the first thing to learn. With regard to methodological terms ("model,"  
learning," "neural," "network") sharing equal importance as applicative terms ("prediction," "forecasting,"  
"trading"), tech and practice are routinely stressed. Thus, a critical point ruled by neat methodical studies pivots  
around how AI and big data are constructed in association with finance from either an innovative perspective or  
an application. Interestingly, expressions "deep" and "lstm" have come to be special terms indicative of two AI  
techniques integrated within the structure. More by the exclusionary evidence, the term "sentiment" is woven  
with a relatively smaller thread (PageRank 0.008) pointing at the least of its integration into mainstream AI  
trading research than the others.  
The network comprises several telling characteristics for research. One is the strong up-front emphasis on  
predictive modeling ("prediction," "forecasting," "predicting"), with almost all the layers having either one or  
three of the terms in them. Second, while the library employs a lot of variations concerning neural network  
approaches, it is pretty evenly spread, ranking for a solid combination of terms. They include "neural,"  
"network," "deep," "LSTM." Third, the network takes proportionate consideration on the theoretical ("model,"  
"algorithm") side as well as the practical ("price," "trading," "risk") influence. The fourth group of terms forming  
the core appears to transform time-series into the new striking research focal points ("time," "series"). The  
coherence index permits wording of the layers that mix these ingredients quite uniformly and efficiently, thus  
forming nicely integrated knowledge domains where technical AI advances come in immediate connection with  
financial market activities.  
This analysis portrays AI in stock trading as a mature, cohesive field with clearly established conceptual  
relationships, where new contributions typically build upon and connect to existing frameworks rather than  
creating entirely separate research streams. The absence of isolated clusters or bridging terms suggests the field  
has reached consensus on its core paradigms while continuing to develop specialized techniques within this  
unified framework.  
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Figure 12. Thematic map - Abstracts.  
The bibliometric thematic mapping (Figure 12) for AI application in stock trading suggests a mature yet  
developing field divided into three key research domains, each quite distinct in the knowledge landscape. The  
node "market" is observed to be the very active core of the field, centered around high centralities (0.943) and  
density (0.805) with 144,582 occurrences, translating this research area as the most advanced and in-field as  
well. This driving theme has been responsible for a lot of starting work in fields such as algorithmic trading  
systems, real-time market analytics, and AI-based price prediction models, where refined machine learning  
skills, like those used to address complex market issues. The other cluster, "stock," has a centrality of 0.866 and  
a density of 0.726, with an emphasis more much on other applications under the rubric of equity, with portfolio  
optimization and risk assessment, to show how basic AI principles could be adjusted to solve concrete financial  
issues.  
The "artificial" cluster (centrality 0.405, density 0.512) represents the field's methodological backbone,  
containing fundamental AI/ML algorithms and their financial adaptations. While less prominent in terms of  
research volume (35,565 occurrences) and centrality, its moderate density indicates established technical rigor,  
serving as the essential substrate supporting applied innovations. The hierarchical ranking of these clusters  
reveals a clear knowledge diffusion pathway. core AI principles evolve in the "artificial" domain, are refined for  
financial instruments in the "stock" cluster, and ultimately deploy at scale in comprehensive "market"  
applications.  
Notably absent are specialized niche themes (high-density, low-centrality), suggesting the field currently  
prioritizes practical applicability over isolated theoretical advancements. This is further evidenced by the  
concentration of themes along the centrality axis, where even basic themes like "stock model models" maintain  
high relevance despite lower developmental activity. The emerging/declining status of "artificial system" themes  
hints at both opportunities and challenges in developing integrated AI trading architectures, potentially  
representing the next frontier for research investment.  
The field exhibits healthy knowledge transfer mechanisms between theory and practice, though the moderate  
density of methodological research suggests opportunities for deeper technical innovation to support next-  
generation applications. Future development would benefit from cultivating specialized sub-domains (e.g.,  
explainable AI for trading, quantum financial models) while maintaining the strong applied focus that currently  
drives progress. This dual emphasis on both advancing core methodologies and solving real-world market  
problems positions AI in stock trading as a exemplar of translational financial research, where theoretical insights  
rapidly transform into market-ready solutions.  
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Figure 13. Thematic Map. Network.  
The thematic map terms analysis (Figure 13) reveals a well-structured research landscape in AI-driven stock  
market trading, organized into three distinct but interconnected clusters that reflect the field's theoretical  
foundations, methodological approaches, and practical applications. The "stock" cluster (6,583 occurrences)  
emerges as the most specialized domain, focusing intensely on predictive modeling techniques with terms like  
"prediction," "neural network," "LSTM," and "forecasting" demonstrating the field's strong emphasis on time-  
series analysis and deep learning applications. This cluster shows particular sophistication in its technical  
vocabulary, featuring specialized terms like "ARIMA" (385 occurrences), "CNN" (446), and "SVM" (396) that  
reveal ongoing innovation in combining traditional statistical methods with modern AI architectures. The  
presence of evaluation metrics like "RMSE" (516) and performance terms like "accuracy" (2,847) underscores  
the quantitative rigor characterizing this research strand.  
Cluster 2, labeled "artificial" (1,998 occurrences), serves as the conceptual bridge between AI theory and  
financial practice, containing foundational terms like "intelligence," "optimization," and "decision-making"  
alongside application-oriented concepts such as "portfolio management" and "trading strategies." This cluster's  
unique value lies in its inclusion of emerging paradigms, evidenced by terms like "reinforcement learning" (552)  
and "text mining" (387), which point to cutting-edge applications of AI in market sentiment analysis and adaptive  
trading systems. The cluster also captures the field's methodological diversity through terms like "detection"  
(2,072 betweenness centrality) and "graph theory" (10,647), suggesting growing interest in anomaly detection  
and network-based market analysis approaches.  
The "market" cluster dominates in both size and centrality, with "market" itself appearing 6,647 times alongside  
high-frequency companion terms like "data" (5,554), "learning" (5,228), and "financial" (4,640). This cluster  
embodies the field's applied dimension, connecting AI methodologies to real-world market contexts through  
terms like "trading strategies" (1,004), "investor behavior" (1958), and "market trends" (1105). Notably, it  
incorporates both traditional approaches ("statistical methods" - 849) and contemporary innovations ("deep  
learning" - 2,443), reflecting the field's evolutionary trajectory. The cluster's substantial representation of  
evaluation terms ("effective" - 935, "empirical" - 898) highlights the strong empirical orientation of market-  
focused AI research.  
Several key insights emerge from the betweenness centrality metrics, which reveal critical bridging terms  
connecting these clusters. "IEEE" (15.083) and "ANN" (1,432.5) serve as important conceptual links between  
technical and applied research, while "futures" (18,544) unexpectedly emerges as a crucial connector, likely due  
to its dual role as both a financial instrument and a temporal forecasting concept. The analysis also identifies  
underdeveloped areas, with "sentiment analysis" (893) and "fuzzy systems" (421) showing relatively low  
penetration despite their potential relevance, suggesting opportunities for future research expansion. The overall  
thematic structure portrays a field that has achieved strong integration between AI methodologies and financial  
applications while maintaining robust theoretical foundations, with clear pathways for knowledge transfer from  
fundamental research ("artificial") to specialized prediction models ("stock") and ultimately to market  
implementations ("market").  
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Figure 14. Thematic Evolution.  
The thematic evolution analysis (Figure 14) reveals a remarkable transformation in AI-driven stock market  
trading research across five decades, demonstrating both the field's dynamic progression and its enduring  
foundational themes. The early period (1971-2000) established fundamental building blocks, with "data,"  
"neural," and "stock" emerging as core themes that would branch significantly in subsequent decades. The 2001-  
2008 period marked a pivotal transition where neural network applications exploded in sophistication (weighted  
inclusion index 0.4), branching into forecasting, decision systems, and complex market analysis, while stock-  
related research evolved from basic modeling to incorporate advanced concepts like nonlinear analysis (0.51)  
and technical indicators. This era saw the crystallization of key methodologies, with neural networks  
transitioning from theoretical tools to practical applications in market prediction (0.63 inclusion from neural to  
stock).  
The 2009-2016 period witnessed substantial thematic diversification, as evidenced by the 0.54 inclusion index  
from neural to financial themes, incorporating machine learning, fuzzy systems, and optimization techniques.  
Stock research during this phase achieved remarkable maturity (0.7 inclusion) by integrating temporal analysis,  
hybrid models, and sophisticated evaluation metrics. The most recent phases (2017-2024 and 2025) demonstrate  
the field's accelerated convergence with cutting-edge AI, where financial and market themes incorporated deep  
learning (0.77) and sentiment analysis, while stock-specific research embraced LSTM (appearing in 1,674  
occurrences) and convolutional networks. The emergence of "based" as a dominant 2025 theme (2,944  
occurrences) with 0.58 inclusion from market research reflects the field's maturation into application-focused  
studies built on established AI foundations. Current trajectories show increasing emphasis on real-world  
implementation challenges (sentiment analysis, reinforcement learning) alongside technical refinement  
(attention mechanisms, transformer architectures), while maintaining strong connections to core financial  
concepts like volatility and portfolio optimization. This evolution portrays a field that has successfully  
transitioned from theoretical exploration to robust application while continuously absorbing advancements from  
broader AI research, with current work poised to tackle increasingly complex market dynamics through  
sophisticated, explainable AI systems.  
In summary, the research paper identifies several critical gaps in the application of AI to stock market trading  
through its comprehensive bibliometric analysis. A fundamental challenge highlighted is the issue of  
"unexplainable AI," where advanced models like deep learning and LSTM networks demonstrate strong  
predictive performance but lack transparency in their decision-making processes, creating barriers to adoption  
in regulated financial markets. This interpretability gap is compounded by models' inability to adapt effectively  
to sudden market volatility, as most systems remain overly dependent on historical data patterns rather than  
incorporating real-time adjustment mechanisms. The analysis also reveals significant underutilization of  
alternative data sources, with bibliometric indicators showing low integration of sentiment analysis and other  
unstructured data streams compared to traditional quantitative methods. While hybrid approaches like neuro-  
fuzzy systems and evolutionary algorithms show promise, the research indicates these remain underexplored  
relative to conventional neural network architectures. The paper further identifies ethical and regulatory  
challenges, particularly the absence of robust frameworks for addressing algorithmic biases and aligning AI  
systems with ESG principles. Technical limitations in real-time processing capabilities, especially for high-  
frequency trading applications, and the embryonic state of quantum computing implementations in financial  
contexts are noted as additional constraints.  
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To address these gaps, the paper proposes several key future research directions. Enhancing model  
interpretability through Explainable AI (XAI) techniques like SHAP and LIME is emphasized as crucial for  
building trust and regulatory compliance. Developing real-time adaptive models using reinforcement learning  
and online learning approaches could improve responsiveness to market fluctuations. The integration of  
multimodal data sources, including sentiment analysis and satellite imagery, is recommended to complement  
traditional market data. The research highlights hybrid architectures as a promising avenue for balancing  
accuracy with interpretability, while also calling for greater focus on ethical AI development aligned with ESG  
objectives. Interdisciplinary collaboration among finance, computer science, and behavioural economics is  
identified as essential for advancing the field, along with investments in regulatory technology (RegTech) to  
ensure that AI trading systems meet compliance requirements. These recommendations are grounded in the  
paper's bibliometric findings, including thematic analyses showing the persistence of "unexplainable AI"  
challenges and the emerging but underdeveloped status of hybrid and real-time modeling approaches. The  
conclusions drawn directly reflect the authors' identification of current limitations and their proposed roadmap  
for future research in AI-driven financial decision-making.  
The research paper acknowledges quantum AI as an emerging but still nascent area in stock market trading  
applications. Quantum computing appears in Cluster 2 of the coupling analysis (Figure 10), linked to "adaptive  
trading systems" and "sustainable finance," but with low frequency. The "Thematic Evolution" (Figure 14)  
shows quantum AI as an emerging 2025 theme (term. "quantum," occurrence. 2,944) but with low inclusion  
indices (0.58), indicating it’s not yet mainstream. While the research includes quantum computing in its  
bibliometric analysis, the coverage remains relatively surface-level due to the field's early developmental stage.  
The paper identifies quantum AI's potential applications in three key areas. portfolio optimization (where  
quantum algorithms could solve complex problems faster than classical methods), high-frequency trading  
(through quantum machine learning's ability to process vast datasets exponentially quicker), and risk modeling  
(using quantum-enhanced Monte Carlo simulations). However, the analysis reveals significant gaps in current  
quantum AI research for financial applications, including hardware scalability limitations with current NISQ  
devices, a lack of empirical studies on hybrid classical-quantum models, and absent regulatory frameworks for  
quantum-powered trading systems. The paper positions quantum AI as part of future research directions rather  
than current mainstream applications, suggesting areas like quantum neural networks and quantum data encoding  
as promising avenues. This limited treatment reflects the field's immaturity - evidenced by quantum terms  
appearing with low frequency in the bibliometric analysis and not ranking among the most relevant  
keywords.Use either SI (MKS) or CGS as primary units. (SI units are strongly encouraged.) English units may  
be used as secondary units (in parentheses). This applies to papers in data storage. For example, write “15  
Gb/cm2 (100 Gb/in2).” An exception is when English units are used as identifiers in trade, such as “3½-in disk  
drive.” Avoid combining SI and CGS units, such as current in amperes and magnetic field in oersteds. This often  
leads to confusion because equations do not balance dimensionally. If you must use mixed units, clearly state  
the units for each quantity in an equation.  
Theoretical Framework  
Figure 15 shows the core financial theories on which this study is based to provide a backdrop against the use of  
AI in stock market trading. The EMH provides the fundamental assumption that markets efficiently incorporate  
all available information into prices. AI systems challenge the EMH by detecting hidden patterns of temporary  
market inefficiencies through advanced machine learning methodologies, especially deep learning systems such  
as LSTMs and CNNs. This has been seen with bibliometric maps where terms like "neural networks" and  
"forecasting" take center stage in the studied literature. Behavioral Finance Theory adds into the mix  
psychological factors and cognitive biases that affect investors' behavior. AI has started implementing this via  
sentiment analysis of news and social media; however, the relatively low occurrence of the word "sentiment" in  
co-occurrence networks would imply that this area is still rather unexplored. Bridging these views, the Adaptive  
Market Hypothesis envisages markets as evolving systems in which the participants continuously adapt. This  
stands well for how AI works, driven by machine learning, especially reinforcement learning systems that allow  
agents to change with market conditions. From 2017 to 2025, these developments are very clear in the spotlight  
of "real-time" and "adaptive" modeling. Altogether, these theories justify the application of AI in trading while  
also spotlighting critical research gaps, especially concerning behavioral integration and model interpretability.  
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Figure 15. Theoretical Framework.  
Conceptual Framework  
The conceptual framework considers AI-enabled stock trading to consist of four main components (Figure 16),  
all interlinked. Transformation data consists of both structured data of historical prices and fundamentals  
dominating current research (depicted in Cluster 1 focusing on "stock-financial-data") and neglected  
unstructured data such as news and satellite images, for example. Processing is performed by two methodological  
approaches: one being predictive modeling with dominant architectures like LSTMs and CNNs, and an adaptive  
learning system that adjusts itself as markets change and, as such, is exploited with models that blend statistical  
and AI-based ones. The mainstay of validation relies on traditional measures like RMSE or accuracy, but real  
stress-testing of models in times of high volatility has yet to be developed. The output layer is where algorithmic  
trading strategies (the dominant cluster in bibliometrics is "market") and risk management tools are indeed  
produced, yet governance criteria on the other hand-has increasingly been incorporated, such as ESG alignment  
and explainability requirements (XAI). Processes in feedback foster continual system improvement through real-  
time retraining of models and adding alternative data sources, thereby evolving research to define and eliminate  
current gaps like incorporating quantum AI and stronger linkages to behavioral finance. Hence, this framework  
maps the current AI trading ecosystem and identifies avenues for future development, arranging the very strong  
technical turf of the field against the budding questions of ethics and interdisciplinary thoughts.  
CONCLUSION  
This comprehensive bibliometric study presents a unique and systematic evaluation of artificial intelligence  
applications in stock market trading by analyzing an unprecedented set of 9,088 documents over 54 years (1971-  
2025). What makes this uniquely novel is its multifaceted approach which combines bibliometric quantitative  
analysis with qualitative theoretical synthesis, showing both the evolution and future directions of the field. The  
study recognizes three main research clusters - market applications, predictive modeling, and AI methodologies  
- beyond which it portrays how neural networks and LSTM models have commandeered developments in recent  
years, with transformer architectures and explainable AI as emerging frontiers.  
This research goes somewhat further than just tracking developments and contributes novel insights. Firstly, it  
exposes sore yet understudied paradoxes in the field, especially the tension between model sophistication and  
interpretability (the "explainability-adaptability paradox"). Secondly, it exposes the major geographical  
disparities in focus, with East Asian institutions taking the forefront in algorithmic development, while Western  
research is at the rear in behavioral finance integration. Thirdly, the study pioneers an original four-layer  
conceptual framework that correlates technical AI capabilities with the actual needs of trading, regulatory  
requirements, and ethical considerations.  
What enables this research to stand out is that it manages to accomplish a connection between theory and  
practice. While the study grounds its findings in financial theories such as Efficient Market Hypothesis and  
Adaptive Markets Theory, it also, in turn, addresses practical-level problems like volatility response and  
regulation compliance so that it ends up with possible diagnostic and prescriptive measures. Especially from the  
rigorous trend analysis, identification of quantum AI and ESG-aligned systems as next frontiers will be of much  
value to the scientific community concerning the direction of their research.  
This work yields not only a different methodological approach capable of integrating perspectives not previously  
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interlinked and fills in gaps in knowledge by compiling the most complete intellectual history of AI in trading  
today but also responsible avenues for going forward. The unique blend of historical comprehensiveness,  
theoretical innovation, and practical applicability marks this work as a must-have for academics developing new  
AI techniques, practitioners implementing trading systems, and policymakers shaping financial regulations in  
the AI age.  
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