Why is T N Merc. Bank falling/rising?

As of 22-Sep, Tamilnad Mercantile Bank Ltd's stock price is currently at 431.00, reflecting a decrease of 4.0, or 0.92%. The stock has underperformed its sector today by 0.72% and has been on a downward trend, experiencing consecutive falls over the last two days with a total decline of 1.32%. In terms of returns, the stock has shown a negative performance of 10.78% over the past year and 12.82% over the last three years, significantly underperforming the benchmark indices during these periods. While the bank has a high Capital Adequacy Ratio of 25.68% and a favorable ROA of 1.8, the recent flat results in operating profit and low domestic mutual fund participation suggest a lack of confidence among investors, contributing to the stock's decline.
Broader market context indicates that the stock's performance over the past week is slightly negative at -0.23%, while the Sensex has gained 0.46%. The stock's year-to-date performance is also concerning, with a decline of 4.75% compared to a 5.15% increase in the Sensex. This consistent underperformance against the benchmark, coupled with falling investor participation and liquidity issues, further exacerbates the stock's challenges in the current market environment. Overall, the combination of weak financial metrics and investor sentiment is driving the stock lower.