Financial News Sentiment and Market Stability in Indonesia: A Comparative ASEAN Analysis (NLP)

Authors

  • Zia Ul Rehman Zafar Universitas Muhammadiyah Surakarta
  • Saif Business Management, Universitas Muhammadiyah Surakarta, Surakarta, Indonesia
  • Ahmed Civil Engineering, Universitas Muhammadiyah Surakarta, Surakarta, Indonesia
  • Arsalan Civil Engineering, Universitas Muhammadiyah Surakarta, Surakarta, Indonesia
  • Nouman Chemical Engineering, Universitas Muhammadiyah Surakarta, Surakarta, Indonesia

DOI:

https://doi.org/10.46851/319

Abstract

The rapid expansion of digital financial information has increased the influence of news-driven narratives on capital market behavior in emerging ASEAN economies. This study examines how financial news sentiment affects stock returns and conditional volatility in Indonesia, Malaysia, and Singapore during 2015–2024. A daily sentiment index was constructed from Reuters, Bloomberg, Factiva, and LexisNexis articles using a hybrid Natural Language Processing (NLP) approach combining lexicon-based methods and FinBERT classification. The sentiment measures were integrated into panel regression, correlated random effects (CRE), Granger causality, and GARCH(1,1) models. The results show that sentiment significantly affects both returns and volatility across ASEAN markets. A one-standard-deviation decline in sentiment increases conditional volatility by approximately 10.3% in Indonesia (p < 0.01), with weaker effects observed in Malaysia and Singapore. The return estimations indicate that a one-unit increase in sentiment raises next-day returns by approximately 0.084 percentage points. Negative sentiment generates stronger volatility responses than positive sentiment, supporting behavioral asymmetry and loss-aversion interpretations. Cross-country findings further show that sentiment sensitivity is strongest in Indonesia and weakest in Singapore, suggesting that institutional development moderates the transmission of digital information into market outcomes. The study contributes by integrating FinBERT-based sentiment analysis with comparative ASEAN financial econometrics and demonstrates the growing importance of narrative-driven risk in emerging capital markets.

Keywords: Financial news sentiment; Market stability; Indonesia; ASEAN equity markets

JEL Classification: G14; G15; C58

References

Amalia, F., Yigitbasioglu, O., & Tooley, S. (2026). XBRL Filing in the Indonesian Capital Market: An Exploration of Firms’ Responses. Accounting and Finance. Scopus. https://doi.org/10.1111/acfi.70159

Arifin, V., Putri, Y. A., & Wiputra, R. (2026). A dataset of subjectivity classification in Indonesian ride-hailing app reviews. Data in Brief, 64. Scopus. https://doi.org/10.1016/j.dib.2025.112348

Arsal, M., Badollahi, I., Salisu, B., Sa’aid, H. B., & Muchran, M. (2026). Good Corporate Governance and Firm Value with Financial Performance and Firm Size as Control Variables: An Agency Theory Perspective. Review of Integrative Business and Economics Research, 15(1), 339–354. Scopus.

Benedetti, H., & Calderón, C. (2025). The Social Impact of Fintech. The Palgrave Handbook of Social Finance, 391–407. Scopus. https://doi.org/10.1007/978-3-031-99906-2_21

Billah, M. (2025). An analysis of extreme risk spillover effects and their determinants between AI-related assets and Islamic banking indices. International Journal of Islamic and Middle Eastern Finance and Management, 18(3), 598–627. Scopus. https://doi.org/10.1108/IMEFM-09-2024-0453

Chung, Y. V., Murhadi, W. R., & Mahadwartha, P. A. (2026). Factors Influencing Investment Decisions: A Case Study of Investors in Indonesia. Revista Finanzas y Politica Economica, 18. Scopus. https://doi.org/10.14718/revfinanzpolitecon.v18.2026.6

Citera, E., & De Pretis, F. (2026). Analyzing financial markets dynamics: A statistical equilibrium framework for stocks and cryptocurrencies. Annals of Operations Research, 357(1), 11–43. Scopus. https://doi.org/10.1007/s10479-024-06451-1

Costa, M. J., Moura, A. P., & Cunha, L. M. (2026). A systematic review of food business operators’ perceptions regarding food fraud. Trends in Food Science and Technology, 172. Scopus. https://doi.org/10.1016/j.tifs.2026.105743

Daeli, E. C., & Wedari, L. K. (2025). EXPLORING THE DIGITAL TRANSFORMATION IMPACTS ON BANK PROFITABILITY IN INDONESIA: A TEXTUAL AND SENTIMENT ANALYSIS APPROACH. Banks and Bank Systems, 20(1), 271–281. Scopus. https://doi.org/10.21511/bbs.20(1).2025.22

Harymawan, I., Rahayu, N. K., Kamarudin, K. A., Wan Ismail, W. A., & Ratri, M. C. (2026). CEO busyness and investment efficiency: Evidence from Indonesia. Journal of Financial Reporting and Accounting, 24(1), 319–343. Scopus. https://doi.org/10.1108/JFRA-02-2023-0083

Januarsi, Y., & Taufik, H. E. R. (2025). UNCERTAINTY ABOUT ECONOMIC POLICY AND DECISIONS TO ENGAGE IN REAL EARNINGS MANAGEMENT: EVIDENCE FROM INDONESIA’S CAPITAL MARKET. Journal of Indonesian Economy and Business, 40(2), 274–293. Scopus. https://doi.org/10.22146/jieb.v40i2.10194

Joaqui-Barandica, O., Gómez Daza, J. A., & López-Estrada, S. (2026). Macrofinancial interconnections in the Pacific Alliance: A quantile approach of stock markets and macroeconomic factors. Applied Economics Letters, 33(4), 568–575. Scopus. https://doi.org/10.1080/13504851.2024.2383259

Kesuma, W., Ekaputra, I. A., & Chalid, D. A. (2022). Individual investor attention to stock split and the disposition effect. Review of Behavioral Finance, 14(5), 701–717. Scopus. https://doi.org/10.1108/RBF-11-2020-0274

Lengyel, P., Pancsira, J., & Füzesi, I. (2026). Machine learning integration in cryptocurrency trading and its fintech implications. Discover Artificial Intelligence, 6(1). Scopus. https://doi.org/10.1007/s44163-025-00785-w

Lian, Z. (2026). Financial Text Classification Based On rLoRA Finetuning On Qwen3-8B model. 225–230. Scopus. https://doi.org/10.1145/3785706.3785741

Matsushita, R., Nobre, I., & Da Silva, S. (2026). Beyond volatility: Using differential entropy to detect financial market regimes. Chaos, Solitons and Fractals, 202. Scopus. https://doi.org/10.1016/j.chaos.2025.117553

Musamih, A., Yaqoob, I., Salah, K., Jayaraman, R., & Omar, M. (2026). Blockchain for Large Language Models (LLMs): Applications, challenges, and framework implementation. Expert Systems with Applications, 308. Scopus. https://doi.org/10.1016/j.eswa.2026.131100

Nave, J. M., & Ruiz, J. (2025). Stock market sensitivities to European monetary policy. Journal of Economic Asymmetries, 32. Scopus. https://doi.org/10.1016/j.jeca.2025.e00437

Ouassou, E., & Tamasiga, P. (2026). Food Price Shock Transmission Through SME Exporting Networks: A Bayesian GVAR Approach. Global Food Value Chains: An In-Depth Exploration of International Trade Dynamics, 167–197. Scopus. https://doi.org/10.1007/978-3-032-11623-9_8

Rahim, R., Husni, T., Syailendra, S., & Sari, W. F. (2025). Diversity of second generation to innovation; Reflection from family business in Indonesia. Contaduria y Administracion, 70(3), 196–224. Scopus. https://doi.org/10.22201/fca.24488410e.2025.5402

Rahmatullah, M., & Hakam, D. F. (2025). Unveiling the nexus: ESG reporting, financial performance, and IPO underpricing in the Indonesian stock market. Development and Sustainability in Economics and Finance, 7. Scopus. https://doi.org/10.1016/j.dsef.2025.100064

Rahmawati, E., Abubakar, L., & Fakhriah, E. L. (2021). Re-Conceptualizing The Legal Standing Claim By Financial Services Authority (Fsa): Its Challenge In Indonesian Capital Market. Journal of Legal, Ethical and Regulatory Issues, 24(Special Issue 1), 1–10. Scopus.

Sari, P. A., Ismail, T., Taqi, M., & Yulianto, A. S. (2026). The Nexus Between Intellectual Capital, Corporate Governance, and Sustainability Reporting: Evidence from Indonesian Manufacturing Sector. Quality - Access to Success, 27(211), 175–182. Scopus. https://doi.org/10.47750/QAS/27.211.17

Sattar, M. A., Naeem, M., Zaman, M. F., & Waseem, M. (2026). Optimization in volatility estimation for imperfect financial markets: A GARCH modeling analysis. Journal of Applied Economics, 29(1). Scopus. https://doi.org/10.1080/15140326.2026.2656018

Shalawati, S., Nasution, A. H., Monika, W., Derin, T., Onan, A., & Murakami, Y. (2026). Beyond BLEU: GPT–5, Human Judgment, and Classroom Validation for Multidimensional Machine Translation Evaluation. Digital, 6(1). Scopus. https://doi.org/10.3390/digital6010008

Sharma, S., & Patra, S. (2025). Rethinking Financial Market Behaviors: In a VUCA World with a Quantum-Like Lens. AI-Driven Finance in the VUCA World, 1–14. Scopus. https://doi.org/10.1201/9781003482154-1

Tanaka, Y., & Suhartono, D. (2026). INTEGRATING INDOBERT WITH CNN, BI-LSTM, AND ATTENTION FOR IMPROVED INDONESIAN HOAX CLASSIFICATION. ICIC Express Letters, Part B: Applications, 17(3), 223–230. Scopus. https://doi.org/10.24507/icicelb.17.03.223

TOKSOZ, S. B. A. Y. A. T., & ISIK, G. (2026). Parameter-efficient fine-tuning of LLaMA models for financial sentiment classification. Cluster Computing, 29(1). Scopus. https://doi.org/10.1007/s10586-025-05865-1

Traverso, A., Tiano, D., Corvaglia, A., Dimonte, A., Draetta, E. L., Fabiani, B., Scuri, P., Barbieri, S., Agazzi, M., Arslan, M., Celada, D., Chiabrando, F., Cibrario, L., Cielo, G., Colombo, A., Contini, S., Liberotti, M., Montagna, M., Ogliari, F. R., … Tacchetti, C. (2026). Powering responsible artificial intelligence with high-quality real-world data: The S-RACE platform for scalable, multi-specialty clinical research. Npj Digital Medicine, 9(1). Scopus. https://doi.org/10.1038/s41746-025-02132-w

Utami, W., Pernamasari, R., Chairunisa, M., & Tanjung, J. (2025). Competitive Advantage in Moderating the Three Pillars of ESG on Firm Value. International Journal of Economics and Financial Issues, 15(4), 292–298. Scopus. https://doi.org/10.32479/ijefi.19099

Wahyuningrum, I. F. S., Baroroh, N., Yanto, H., Hidayah, R., Puspita, A. S., & Elviana, L. D. (2025). Corporate Governance: Driving Climate Change Disclosure and Advancing SDGs. Journal of Risk and Financial Management, 18(5). Scopus. https://doi.org/10.3390/jrfm18050234

Wahyuningrum, I. F. S., Djajadikerta, H. G., Trireksani, T., Budihardjo, M. A., & Sriningsih, S. (2026). Environmental disclosure in Indonesia: A study of manufacturing and mining companies. Asian Journal of Accounting Research, 11(2), 218–232. Scopus. https://doi.org/10.1108/AJAR-11-2023-0367

Wulandari, R., Taha, R., Firmansyah, A., & Abdullah, W. Z. W. (2026). Unveiling The Role of ESG in Mitigating Firm Idiosyncratic Risk: Evidence from Indonesia. Global Business and Finance Review, 31(3), 205–219. Scopus. https://doi.org/10.17549/gbfr.2026.31.3.205

Xu, A., Li, Z., Wu, T., & Cao, Y. (2026). Enhancing the robustness of counterfactual explanations via modular robust compatibility. Expert Systems with Applications, 304. Scopus. https://doi.org/10.1016/j.eswa.2025.130746

Published

2026-07-09

Issue

Vol. 8 No. 1 (2026): Journal of Business and Political Economy: Biannual Review of The Indonesian Economy Review (In Progress)

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Articles

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This work is licensed under a  Creative Commons Attribution 4.0 International License.