Why is Star Delta Trans falling/rising?

As of 14-Nov, Star Delta Transformers Ltd is experiencing a price increase, with its current price at 645.30, reflecting a rise of 41.3 or 6.84%. The stock has shown strong performance today, outperforming its sector by 6.27% and reaching an intraday high of Rs 664.9, which is a 10.08% increase. Over the past week, the stock has gained 9.94%, and in the last month, it has risen by 13.43%. However, it is important to note that the stock has a year-to-date decline of 29.54% and a one-year decline of 29.31%. Additionally, there has been a significant drop in investor participation, with delivery volume falling by 50.48% against the five-day average, which could indicate a potential concern for sustained upward momentum.
Broader market context shows that while Star Delta Transformers Ltd has outperformed the Sensex in the short term, with a 1-week return of 9.94% compared to the Sensex's 1.62%, it has underperformed significantly on a year-to-date basis, where the Sensex has increased by 8.22%. The stock's performance over longer periods, such as three years and five years, remains strong, with returns of 383.01% and 481.61%, respectively. This suggests that while the stock is currently rising, it has faced considerable challenges in the recent past, and the broader market conditions may still be affecting investor sentiment.