Investor Behavioral Biases in Investment Decision-Making: A Study on The Novice Stock Investors

Authors

DOI:

https://doi.org/10.22441/jurnal_mix.2026.v16i1.024

Keywords:

Behavioral Biases, Investment Decision-making, Financial Literacy, Novice Stock Investors

Abstract

Objectives: The aim of this study was to investigate the influence of overconfidence, disposition effect, herding effect and home bias on the process of making investment decisions in stocks, and to account for the moderating effect of financial literacy.
Methodology: The study was carried out on 100 investors in the Investor Saham Pemula (ISP) community who are beginner investors in stocks. Questionnaire, interview and documentation were used to gather data. Moderated Regression Analysis (MRA) was used for data analysis.
Findings: Overconfidence and home bias had significant effects on investment decision making; there was no significant effect on Disposition Effect and herding effect. Financial literacy significantly moderated the influence of Disposition Effect on investment decisions at 10%, whereas it did not significantly moderate the influence of other factors namely overconfidence, herd effect, and home bias.
Conclusion: psychological factors and financial literacy are key determinants in investor behavior and decision-making. The study underscores the importance of continuous investor education and guidance to assist in addressing behavioral biases on the part of the novice investors and making rational and more data-driven investment decisions for long-term returns.

References

Addinpujoartanto, N. A., & Darmawan, S. (2020). Pengaruh Overconfidence, Regret Aversion, Loss Aversion, dan Herding Bias Terhadap Keputusan Investasi Di Indonesia. Jurnal Riset Ekonomi Dan Bisnis, 13(3). https://doi.org/10.26623/jreb.v13i3.2863

Adil, M., Singh, Y., & Ansari, M. S. (2022). How financial literacy moderate the association between behaviour biases and investment decision? Asian Journal of Accounting Research, 7(1), 17–30. https://doi.org/10.1108/AJAR-09-2020-0086

Afriani, D., & Halmawati, H. (2019). Pengaruh Cognitive Dissonance Bias, Overconfidence Bias Dan Herding Bias Terhadap Pengambilan Keputusan Investasi. JURNAL EKSPLORASI AKUNTANSI, 1(4). https://doi.org/10.24036/jea.v1i4.168

Altaf, H., & Jan, A. (2023). Generational theory of behavioral biases in investment behavior. Borsa Istanbul Review, 23(4). https://doi.org/10.1016/j.bir.2023.02.002

Anam, C. (2023). Jumlah Investor di Malang Terus Tumbuh, Minat Beli SBN Tinggi. Retrieved January 20, 2023, from Bisnis.com website: https://market.bisnis.com/read/20230915/7/1695127/jumlah-investor-di-malang-terus-tumbuh-minat-beli-sbn-tinggi

Barber, B. M., & Odean, T. (2005). Trading is Hazardous to Your Wealth: The Common Stock Investment Performance of Individual Investors. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.219228

Bikhchandani, S., & Sharma, S. (2000). Herd behavior in financial markets. IMF Staff Papers, 47(3). https://doi.org/10.2307/3867650

BKPM, K. I. (2020). Pentingnya Peran Investasi dalam Pertumbuhan Ekonomi Indonesia di Kala Pandemi.

Bonaparte, Y., Fabozzi, F. J., & Koslowsky, D. (2021). Information search methods and financial decisions. Review of Financial Economics, 39(4). https://doi.org/10.1002/rfe.1125

Bouteska, A., Harasheh, M., & Abedin, M. Z. (2023). Revisiting overconfidence in investment decision-making: Further evidence from the U.S. market. Research in International Business and Finance, 66. https://doi.org/10.1016/j.ribaf.2023.102028

Cahyono, E. (2015). Investasi Dan Pembangunan Ekonomi. Retrieved January 19, 2024, from https://setkab.go.id/investasi-dan-pembangunan-ekonomi/

Chen, G., Kim, K. A., Nofsinger, J. R., & Rui, O. M. (2007). Trading performance, disposition effect, overconfidence, representativeness bias, and experience of emerging market investors. Journal of Behavioral Decision Making, 20(4). https://doi.org/10.1002/bdm.561

Choi, N., & Sias, R. W. (2009). Institutional industry herding. Journal of Financial Economics, 94(3). https://doi.org/10.1016/j.jfineco.2008.12.009

Feng, L., & Seasholes, M. S. (2005). Do investor sophistication and trading experience eliminate behavioral biases in financial markets? Review of Finance, Vol. 9. https://doi.org/10.1007/s10679-005-2262-0

Fitriyani, S., & Anwar, S. (2022). Pengaruh Herding, Experience Regret Dan Religiosity Terhadap Keputusan Investasi Saham Syariah Pada Investor Muslim Millennial Dengan Financial Literacy Sebagai Variabel Moderasi. Jurnal Ekonomi Syariah Teori Dan Terapan, 9(1). https://doi.org/10.20473/vol9iss20221pp68-77

Garg, J., Karmakar, M., & Paul, S. (2023). A study on equity home bias using vine copula approach. North American Journal of Economics and Finance, 64. https://doi.org/10.1016/j.najef.2022.101860

Gunathilaka, R. C. (2021). Effect of Socio-demographic Factors (Age, Occupation and Education) on Behavioral Biases of Individual Investors’ Decision-making Evidence from The Colombo Stock Exchange. International Journal of Accountancy, 1(2). https://doi.org/10.4038/ija.v1i2.29

Hellen, H., Mintarti, S., & Fitriadi, F. (2018). Pengaruh investasi dan tenaga kerja serta pengeluaran pemerintah terhadap pertumbuhan ekonomi serta kesempatan kerja. INOVASI, 13(1). https://doi.org/10.29264/jinv.v13i1.2490

Huberman, G. (2001). Familiarity breeds investment. Review of Financial Studies, 14(3). https://doi.org/10.1093/rfs/14.3.659

IKoneksi. (2025). OJK Malang Mencatat Investor Pasar Modal di Kota Malang Terus Bertumbuh. Retrieved August 5, 2026, from iKoneksi website: https://ikoneksi.com/ojk-malang-mencatat-investor-pasar-modal-di-kota-malang-terus-bertumbuh/

Kahneman, D., & Tversky, A. (1979). Prospect theory: An analysis of decision under risk. Econometrica, 47, 263–292.

Kartini, K., & Nahda, K. (2021). Behavioral Biases on Investment Decision: A Case Study in Indonesia. Journal of Asian Finance, Economics and Business, 8(3). https://doi.org/10.13106/jafeb.2021.vol8.no3.1231

Krstić, M. (2022). Rational Choice Theory – Alternatives and Criticisms. Socijalna Ekologija, 31(1). https://doi.org/10.17234/SocEkol.31.1.1

Kulal, A. (2022). Impact of Influenced Behavioral Biases on Investment Decision. SSRN Electronic Journal. https://doi.org/10.2139/ssrn.4233737

Kumar, S., & Goyal, N. (2015). Behavioural biases in investment decision making – a systematic literature review. Qualitative Research in Financial Markets, 7(1). https://doi.org/10.1108/QRFM-07-2014-0022

Liana, L. (2009). Penggunaan MRA dengan SPSS untuk menguji pengaruh variabel moderating terhadap hubungan antara variabel independen dan variabel dependen. Dinamik, 14(2).

Madaan, G., & Singh, S. (2019). An analysis of behavioral biases in investment decision-making. International Journal of Financial Research, 10(4). https://doi.org/10.5430/ijfr.v10n4p55

Mita, D. E., & Almilia, L. S. (2019). Examining belief-adjustment model and investors overconfidence on investment decision making. Jurnal Keuangan Dan Perbankan, 23(4). https://doi.org/10.26905/jkdp.v23i4.3203

Mittal, S. K. (2022). Behavior biases and investment decision: theoretical and research framework. Qualitative Research in Financial Markets, Vol. 14. https://doi.org/10.1108/QRFM-09-2017-0085

Natasya, N., Kusumastuti, D. H., Alifia, W., & Leon, F. M. (2022). The Effect Between Behavioral Biases and Investment Decisions Moderated by Financial Literacy on the Millennial Generation in Jakarta. The Accounting Journal of BINANIAGA, 07(01), 113–126. Retrieved from https://www.neliti.com/publications/543806/the-effect-between-behavioral-biases-and-investment-decisions-moderated-by-finan

Neumayer, A. (2018). There’s no place like home: Investors’ home bias in Germany, 1898-1934. Jahrbuch Fur Wirtschaftsgeschichte, Vol. 59. https://doi.org/10.1515/jbwg-2018-0015

Nur Aini, N. S., & Lutfi, L. (2019). The influence of risk perception, risk tolerance, overconfidence, and loss aversion towards investment decision making. Journal of Economics, Business & Accountancy Ventura, 21(3). https://doi.org/10.14414/jebav.v21i3.1663

Oderda, G. (2015). Stochastic portfolio theory optimization and the origin of rule-based investing. Quantitative Finance, 15(8). https://doi.org/10.1080/14697688.2015.1012840

OECD. (2022). Measuring Financial Literacy : Questionnaire and Guidance Notes for Conducting an Internationally Comparable Survey of Financial Literacy. Oecd.

Parveen, S., Satti, Z. W., Subhan, Q. A., Riaz, N., Baber, S. F., & Bashir, T. (2023). Examining investors’ sentiments, behavioral biases and investment decisions during COVID-19 in the emerging stock market: a case of Pakistan stock market. Journal of Economic and Administrative Sciences, 39(3). https://doi.org/10.1108/jeas-08-2020-0153

Prasetyo, P., Sumiati, & Ratnawati, K. (2023). The impact of disposition effect, herding and overconfidence on investment decision making moderated by financial literacy. International Journal of Research in Business and Social Science (2147- 4478), 12(9), 241–251. https://doi.org/10.20525/ijrbs.v12i9.3026

Rahman, M., & Gan, S. S. (2020). Generation Y investment decision: an analysis using behavioural factors. Managerial Finance, 46(8). https://doi.org/10.1108/MF-10-2018-0534

Rajasekar, A., Pillai, A. R., Elangovan, R., & Parayitam, S. (2023). Risk capacity and investment priority as moderators in the relationship between big-five personality factors and investment behavior: a conditional moderated moderated-mediation model. Quality and Quantity, 57(3). https://doi.org/10.1007/s11135-022-01429-2

Ranaweera, S. S., & Kawshala, B. A. H. (2022). Influence of Behavioral Biases on Investment Decision Making with Moderating Role of Financial Literacy and Risk Attitude: A Study Based on Colombo Stock Exchange. South Asian Journal of Finance, 2(1). https://doi.org/10.4038/sajf.v2i1.32

Rauf, A., Khurshid, M. K., & Afzal, M. (2018). Impact of Overconfidence and Loss Aversion Biases on Equity Investor’s Decision-Making Process and Performance. NICE Research Journal. https://doi.org/10.51239/nrjss.v0i0.76

Santika, E. F. (2023). Investor Pasar Modal Indonesia Tembus 12,16 Juta Orang pada 2023. Retrieved January 19, 2023, from https://databoks.katadata.co.id/datapublish/2023/12/29/investor-pasar-modal-indonesia-tembus-1216-juta-orang-pada-2023

Sarkissian, S., & Schill, M. J. (2004). The overseas listing decision: New evidence of proximity preference. Review of Financial Studies, Vol. 17. https://doi.org/10.1093/rfs/hhg048

Setiawan, Y. C., Atahau, A. D. R., & Robiyanto, R. (2018). Cognitive Dissonance Bias, Overconfidence Bias dan Herding Bias dalam Pengambilan Keputusan Investasi Saham. AFRE (Accounting and Financial Review), 1(1). https://doi.org/10.26905/afr.v1i1.1745

Shiller, R. J. (2003). From efficient markets theory to behavioral finance. Journal of Economic Perspectives, 17(1). https://doi.org/10.1257/089533003321164967

Suresh G. (2024). Impact of Financial Literacy and Behavioural Biases on Investment Decision-making. FIIB Business Review, 13(1). https://doi.org/10.1177/23197145211035481

Ullah, S., Elahi, M. A., Ullah, A., Pinglu, C., & Subhani, B. H. (2020). Behavioral biases in investment decision making and moderating role of investor’s type. Intellectual Economics, 14(2). https://doi.org/10.13165/IE-20-14-2-06

van Rooij, M., Lusardi, A., & Alessie, R. (2011). Financial literacy and stock market participation. Journal of Financial Economics, 101(2), 449–472. https://doi.org/10.1016/j.jfineco.2011.03.006

Wangzhou, K., Khan, M., Hussain, S., Ishfaq, M., & Farooqi, R. (2021). Effect of Regret Aversion and Information Cascade on Investment Decisions in the Real Estate Sector: The Mediating Role of Risk Perception and the Moderating Effect of Financial Literacy. Frontiers in Psychology, 12. https://doi.org/10.3389/fpsyg.2021.736753

Wibowo, M. A., Indrawati, N. K., & Aisjah, S. (2023). The impact of overconfidence and herding bias on stock investment decisions mediated by risk perception. International Journal of Research in Business and Social Science, 12(5). https://doi.org/10.20525/ijrbs.v12i5.2663

Wu, W. L., & Gau, Y. F. (2017). Home bias in portfolio choices: social learning among partially informed agents. Review of Quantitative Finance and Accounting, 48(2). https://doi.org/10.1007/s11156-016-0560-6

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Published

2026-08-20

How to Cite

Wijayanto, A., & Saryadi, S. (2026). Investor Behavioral Biases in Investment Decision-Making: A Study on The Novice Stock Investors. MIX: JURNAL ILMIAH MANAJEMEN, 16(1), 388–407. https://doi.org/10.22441/jurnal_mix.2026.v16i1.024

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