Why is Vistar Amar falling/rising?

As of 12-Sep, Vistar Amar Ltd's stock price is currently at 129.00, reflecting a decrease of 1.0 (-0.77%). The stock has been underperforming recently, having fallen consecutively for the last two days, resulting in a total decline of 3.62%. Today, it opened with a loss of 2.27% and reached an intraday high of Rs 133.8 before dropping to a low of Rs 126.3. Over the past week, the stock has decreased by 0.73%, while it has shown a modest gain of 4.84% over the past month. Despite a significant long-term gain of 474.11% over the last five years, the stock has struggled in the short term, with a year-to-date return of 7.23% compared to a decline of 18.70% over the past year. The company recently reported positive quarterly results, which could provide some support, but the falling investor participation, indicated by a 47.27% drop in delivery volume, suggests waning interest among traders.
In the broader market context, Vistar Amar Ltd's recent performance contrasts with the Sensex, which has increased by 1.48% over the past week. The stock's underperformance against the benchmark indicates a lack of investor confidence, particularly as it has not kept pace with the market's upward movement. While the company's positive financial results from June 2025 may offer some optimism, the overall market sentiment and the stock's declining trend in the short term highlight challenges that could be affecting its price.