Why is EMS falling/rising?

As of 18-Jul, EMS Ltd's stock price is rising, currently at 634.40, reflecting an increase of 21.2 or 3.46%. The stock has shown strong performance recently, outperforming its sector by 3.95% today and has gained 4.22% over the last two days. In the past week, the stock has increased by 5.31%, while over the past month, it has risen by 7.33%. However, despite these short-term gains, the stock has a year-to-date decline of 25.36% and has underperformed against the benchmark over the last three years. Positive factors contributing to the recent rise include a low debt-to-equity ratio and healthy long-term growth, with net sales increasing at an annual rate of 40.70%. Conversely, the stock faces challenges such as flat results in March, a low operating profit margin, and a high price-to-book value, which may deter some investors.
In the broader market context, EMS Ltd's short-term performance contrasts sharply with the benchmark, as the Sensex has declined by 0.90% over the past week. While EMS has shown positive returns in the short term, its year-to-date performance remains significantly lower than the Sensex's gain of 4.63%. The stock's recent upward movement may be attributed to short-term trading dynamics and investor sentiment, but its long-term underperformance and low mutual fund holdings suggest caution among institutional investors. The falling delivery volume indicates a potential decrease in investor participation, which could impact future price movements.