Why is Sonata Software falling/rising?

As of 13-Aug, Sonata Software Ltd. is experiencing a decline in its stock price, currently at Rs 367.30, reflecting a decrease of Rs 5.9 or 1.58%. Today's price summary indicates that the stock has been highly volatile, with an intraday high of Rs 384.5 and a low of Rs 354. The stock has underperformed its sector by 1.72% today, and while it has shown a positive return of 5.76% over the past week, it has significantly underperformed over the last month and year, with returns of -14.59% and -37.02%, respectively. The company has strong long-term fundamentals, including a high average Return on Equity (ROE) of 31.04% and healthy net sales growth, but it also faces challenges such as flat results in June and an expensive valuation compared to its peers.
In the broader market context, the Sensex has remained relatively stable, with a negligible change of -0.01% over the past week, contrasting with Sonata's recent performance. The stock's year-to-date return of -38.89% starkly contrasts with the Sensex's positive return of 3.07%, indicating that Sonata has not only underperformed the market but also its peers over various time frames. This underperformance, coupled with a low Debt to Equity ratio and high institutional holdings, suggests that while there is potential for recovery, the current market sentiment remains cautious due to recent financial results and valuation concerns.