Why is T N Merc. Bank falling/rising?

As of 06-Aug, Tamilnad Mercantile Bank Ltd's stock price is currently at 431.95, reflecting an increase of 0.75 or 0.17%. The stock has shown a trend reversal, gaining after four consecutive days of decline. However, it is trading below its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages, indicating a bearish trend in the longer term. Additionally, investor participation has decreased, with delivery volume falling by 29.06% compared to the 5-day average. The stock's performance over the past week shows a decline of 6.03%, while it has also underperformed on a monthly and yearly basis, with returns of -3.13% and -5.07%, respectively.
In the broader market context, the Sensex has experienced a decline of 1.15% over the past week, which is less severe than Tamilnad Mercantile Bank's performance. This suggests that while the bank's stock is struggling, it is not entirely isolated from the broader market trends. The year-to-date performance shows the stock down by 4.54%, contrasting with the Sensex's gain of 3.08%, indicating a significant underperformance relative to the benchmark. Overall, the combination of declining investor participation, lower trading volumes, and the stock's inability to maintain pace with market averages contributes to the recent fluctuations in Tamilnad Mercantile Bank's stock price.