Why is Aditya AMC falling/rising?

As of 05-Jun, Aditya Birla Sun Life AMC Ltd is experiencing a decline in its stock price, currently at 755.95, which reflects a decrease of 4.95 points or 0.65%. Despite this drop, the stock has shown a strong performance over the past week with a return of 4.30%, and a notable increase of 14.26% over the past month. The stock is currently trading above its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages, indicating a generally positive technical outlook. However, it has underperformed its sector by 1.02% today and has seen a trend reversal after two consecutive days of gains. The stock's long-term fundamentals remain strong, with an average Return on Equity (ROE) of 25.98%, but it is considered to have a very expensive valuation with a Price to Book Value of 5.9.
In the broader market context, while Aditya AMC has outperformed the benchmark Sensex in the short term, with a 1-year return of 34.21% compared to the Sensex's 9.49%, it is important to note that the stock has a year-to-date decline of 9.47%, contrasting with the Sensex's gain of 4.23%. This discrepancy highlights the stock's volatility and potential overvaluation concerns, particularly given its flat results in March 2025 and a PEG ratio of 1.2, suggesting that while the stock has performed well historically, its current price may not be justified by its earnings growth.