Why is C D S L falling/rising?

As of 23-Sep, Central Depository Services (India) Ltd is experiencing a decline in its stock price, currently at 1,546.60, which reflects a decrease of 11.9 points or 0.76%. The stock has underperformed its sector by 1.09% today, and its delivery volume has fallen significantly by 20.22% compared to the 5-day average, indicating reduced investor participation. Over the past week, the stock has seen a slight decline of 0.18%, while its year-to-date performance shows a more substantial drop of 12.06%. Despite a strong long-term fundamental strength with an average Return on Equity (ROE) of 26.52% and healthy growth in net sales and operating profit, the recent negative financial results, including a 20.87% fall in profit before tax and a 23.7% decline in profit after tax, have contributed to the stock's downward movement.
In the broader market context, the stock's performance over the past month shows a decline of 1.77%, contrasting with a 1.20% increase in the Sensex, indicating that it is lagging behind the benchmark. Although the stock has a high institutional holding of 27.13%, which typically suggests confidence from more knowledgeable investors, its current valuation is considered expensive with a Price to Book Value of 18.4, making it less attractive compared to its peers. The stock's PEG ratio of 20.8 further highlights concerns regarding its valuation relative to its earnings growth, contributing to the overall bearish sentiment surrounding it.