Why is T N Merc. Bank falling/rising?

As of 11-Sep, Tamilnad Mercantile Bank Ltd's stock price is currently at 431.25, reflecting a decrease of 0.75, or 0.17%. The stock has recently underperformed its sector by 0.37% and has experienced a trend reversal, falling after three consecutive days of gains. In terms of returns, the stock has shown a modest increase of 1.38% over the past week, but it has generated a negative return of 9.70% over the past year, indicating a longer-term decline despite a 9.3% rise in profits during the same period. The bank's high Capital Adequacy Ratio of 25.68% and attractive valuation metrics, such as a Price to Book Value of 0.7 and a PEG ratio of 0.6, suggest potential for recovery; however, the stock's recent performance has been hampered by flat results in June and low domestic mutual fund interest, which may signal investor caution.
In the broader market context, the stock's short-term performance has outpaced the Sensex, which has increased by 1.03% over the same week. However, the stock's year-to-date performance is significantly lagging behind the benchmark, with a decline of 4.70% compared to the Sensex's gain of 4.36%. This underperformance in both short and long-term metrics, combined with concerns over its operating profit margins and the lack of domestic mutual fund investment, contributes to a cautious outlook for Tamilnad Mercantile Bank Ltd, leading to its current price decline.