Why is Envair Electrody falling/rising?

As of 23-Oct, Envair Electrody Ltd is experiencing a price increase, currently at 125.00, which reflects a rise of 7.77 or 6.63%. The stock has been on an upward trend, gaining for the last nine consecutive days and achieving a remarkable 77.94% return during this period. Today, it opened with a 10% gain and reached an intraday high of Rs 128.95. Additionally, the stock has outperformed its sector by 7.2%. However, it is important to note that there has been a significant drop in investor participation, with delivery volume falling by 47.94% against the five-day average, which could indicate a potential concern regarding sustained interest in the stock.
Broader Market Context: In comparison to the Sensex, which has increased by 1.30% over the past week, Envair Electrody's stock has surged by 39.49%, showcasing its strong short-term performance relative to the benchmark. Over the last month, the stock has risen by 71.21%, while the Sensex has only gained 2.99%. Despite this impressive short-term performance, the stock has a year-to-date decline of 5.91%, contrasting with the Sensex's rise of 8.21%, indicating that while the stock is currently performing well, it has faced challenges earlier in the year.