Why is Aditya AMC falling/rising?

As of 15-Sep, Aditya Birla Sun Life AMC Ltd is experiencing a decline in its stock price, currently at 841.80, reflecting a decrease of 5.95 points or 0.7%. The stock has underperformed its sector by 1.17% today and has been on a downward trend for the last three days, accumulating a total loss of 3.05% during this period. Despite having a strong long-term fundamental strength with an average Return on Equity (ROE) of 25.98%, the stock's recent performance has been affected by falling investor participation, as evidenced by a significant drop in delivery volume by 42.89% compared to the 5-day average. Additionally, while the stock has shown positive results in the past quarter, including record net sales and profit after tax, its short-term performance has not matched the broader market trends, as indicated by its negative returns over the past week and month.
In the broader market context, the stock's short-term performance has lagged behind the benchmark, with a 1-week return of -1.66% compared to the Sensex's gain of 1.24%. This underperformance is further highlighted by the stock's decline over the past month, where it fell by 1.57% while the Sensex rose by 1.47%. Although the stock has demonstrated strong long-term performance, including a 12.48% return over the last year, the recent trends suggest a disconnect with the overall market sentiment, contributing to its current downward trajectory.