The Psychological Frontier: Navigating Investment Decisions through the Lens of Behavioural Finance

This paper will focus on the increasing significance of behavioural finance in investment decision making in the contemporary digital financial environment in 2025-2026. Psychological biases namely loss aversion, herding behavior, overconfidence, anchoring and confirmation bias are analyzed in the context of their impact on investors decision making process within the financial markets. This paper will also be studying how artificial intelligence, fintech platforms, algorithmic trading, social media induced investment practices affect the institutional and retail investors' trading and investment behavior. A human-centric analytical approach supported by AI based analysis and graphic representation is used to show the growing impact of emotional investing and digital finance system on investment behavior. Indian market scenario with increasing participation from retail investors, interest in cryptocurrencies and ESG investments and AI driven investment advisory models is also taken into account. It is concluded that technological integration combined with psychological awareness, emotional stability and systematic long-term financial planning would be critical for sound investment management in the days to come. Key Words: Behavioral Finance, Investment Psychology, Investor Bias, AI in Finance, Retail Investor, Emotional Investing, Financial Decision Making, Market Sentiment, FinTech, Digital Investing