Why is C D S L falling/rising?

As of 24-Sep, Central Depository Services (India) Ltd is experiencing a decline in its stock price, currently at 1,514.00, which reflects a decrease of 32.6 or 2.11%. The stock has underperformed its sector by 2.02% today, and its delivery volume has significantly decreased by 46.48% compared to the 5-day average, indicating falling investor participation. Over the past week, the stock has dropped by 3.50%, and year-to-date, it has fallen by 13.91%, contrasting with the Sensex's gain of 5.97%. While the company has strong long-term fundamentals, including a robust average Return on Equity (ROE) of 26.52% and healthy growth rates in net sales and operating profit, recent negative financial results have raised concerns. Specifically, the profit before tax and profit after tax have both seen significant declines, contributing to a perception of the stock being overvalued relative to its peers.
In the broader market context, the stock's short-term performance has been notably weaker than the benchmark, with a 1-week decline of 3.50% compared to the Sensex's drop of only 1.08%. This underperformance is compounded by the stock trading at a premium valuation, as indicated by its high Price to Book Value ratio of 18, which suggests that investors may be cautious about its future profitability given the recent earnings declines. The combination of high institutional holdings, which typically indicates confidence from larger investors, and the recent negative earnings report creates a complex picture for the stock, leading to its current downward trend.