Why is V-Marc India falling/rising?

As of 06-Aug, V-Marc India Ltd's stock price is currently at 436.70, reflecting a decline of 22.35 points or 4.87%. The stock has been underperforming, having lost 8.99% over the last two days and showing a performance today that is 3.78% lower than its sector. Additionally, the stock has experienced erratic trading, with no trades on 2 out of the last 20 days, and a significant drop in delivery volume, which fell by 61.29% compared to the 5-day average. Despite a strong year-to-date return of 13.92% and a remarkable 52.96% increase over the past year, the recent consecutive declines indicate a shift in investor sentiment.
Broader market context shows that V-Marc India's short-term performance has lagged behind the Sensex, which has declined by only 1.13% over the past week compared to V-Marc's 1.87% drop. While the stock has outperformed the benchmark over longer periods, such as a 4.90% gain in the last month versus the Sensex's 3.48% loss, the current downward trend suggests a potential loss of confidence among investors. The liquidity remains adequate for trading, but the falling investor participation could further exacerbate the stock's decline in the near term.