Why is Aditya AMC falling/rising?

As of 02-Sep, Aditya Birla Sun Life AMC Ltd's stock price is currently at Rs 826.60, reflecting a decrease of Rs 12.05 or 1.44%. The stock has underperformed its sector by 1.31% today, having touched an intraday low of Rs 817.6, which represents a decline of 2.51%. Over the past week, the stock has seen a return of -1.78%, and over the past month, it has decreased by 1.02%. Despite a strong long-term fundamental strength indicated by an average Return on Equity (ROE) of 25.98% and positive quarterly results, the stock's recent performance has been hampered by falling investor participation, with a significant drop in delivery volume by 61.31% against the 5-day average.
In the broader market context, the stock's short-term performance has lagged behind the benchmark Sensex, which has declined by only 0.78% over the past week. While Aditya Birla Sun Life AMC has shown impressive long-term returns, outperforming the BSE500 over various periods, its recent struggles in the short term highlight a disconnect between its strong fundamentals and current market sentiment. The liquidity of the stock remains adequate for trading, but the recent decline in investor participation suggests caution among investors, contributing to the stock's downward movement.