The article examines how investors at the Bombay Stock Exchange (BSE) show overconfidence behavior. By analyzing market data, the researchers found that overconfident investors tend to overreact to private information and underreact to public information. They also discovered that self-attribution bias, when combined with accurate forecasts, increases investors' overconfidence and trading volume. This excessive trading by overconfident investors contributes to higher volatility in the market. The study suggests that investors should review their past investment decisions to minimize the negative effects of overconfidence on their returns.