Why is AU Small Finance falling/rising?

As of 26-Aug, AU Small Finance Bank Ltd's stock price is currently at 745.50, reflecting a decrease of 3.5 points or 0.47%. Today's price summary indicates that the stock has outperformed its sector by 0.67%, with a notable increase in delivery volume by 118.56% compared to the 5-day average, suggesting rising investor participation. Over the past week, the stock has experienced a decline of 1.64%, while it has shown a positive return of 1.80% over the last month. The company has demonstrated strong long-term fundamentals, with a high Return on Assets (ROA) of 1.91% and significant growth in Net Interest Income and net profit. Additionally, the stock has consistently delivered positive results over the last five quarters, which has likely contributed to its appeal among investors.
In the broader market context, while the stock has outperformed the benchmark Sensex in the past month, the Sensex itself has declined by 1.05% over the same period. Despite the stock's recent price drop, it has outperformed the market significantly over the past year, generating a return of 17.68% compared to the Sensex's decline of 1.12%. However, the stock's valuation appears expensive with a Price to Book Value of 3.3, which may raise concerns among some investors. The high institutional holdings at 66.56% indicate confidence from larger investors, which could provide stability despite the current price movement.