Why is EP Biocomposites falling/rising?

As of 28-Aug, EP Biocomposites Ltd is experiencing a price increase, with the current price at 128.40, reflecting a rise of 8.4 or 7.0%. The stock has shown erratic trading patterns, having not traded on 3 out of the last 20 days. Today, it opened with a significant gap up of 7% and reached an intraday high of Rs 128.4. Despite this positive movement, the stock has underperformed in the year-to-date comparison, showing a decline of 24.91%, while it has gained 7.00% over the past month. The delivery volume has notably decreased by 71.43% against the 5-day average, indicating a drop in investor participation, which could be a concern for future price stability.
Broader Market Context: In the short term, EP Biocomposites has outperformed the benchmark Sensex, which declined by 2.34% over the past week, while the stock itself fell by only 1.19%. This suggests that despite the overall market challenges, the stock's recent performance has been relatively strong. However, the year-to-date performance shows a stark contrast, with the Sensex gaining 2.48% while EP Biocomposites has struggled significantly. The liquidity of the stock remains adequate for trading, but the falling investor participation may pose risks to sustaining the recent upward price movement.