Why is Polymac Thermof. falling/rising?

As of 26-Aug, Polymac Thermoformers Ltd is experiencing a decline in its stock price, currently at 18.56, reflecting a decrease of 0.48 or 2.52%. The stock has underperformed its sector by 1.07% today and has shown erratic trading patterns, not trading on 5 out of the last 20 days. Despite the current downturn, the stock has seen a significant increase of 35.87% over the past month, although it has a year-to-date decline of 5.55% and a substantial drop of 34.88% over the past year. The stock's moving averages indicate it is performing better than the shorter-term averages but is still below the 200-day moving average. Additionally, there has been a notable rise in investor participation, with delivery volume increasing by 66.67% on August 18 compared to the 5-day average, suggesting some interest despite the recent price drop.
In the broader market context, Polymac's short-term performance of -2.52% over the past week contrasts with the Sensex, which has only declined by 1.05% in the same period. This indicates that while the overall market is experiencing a slight downturn, Polymac is facing a more significant decline. The stock's year-to-date performance is also lagging behind the Sensex, which has gained 3.39% this year. The liquidity of the stock appears adequate for trading, as it is liquid enough for a trade size of Rs 0 crore based on 2% of the 5-day average traded value. However, the combination of recent erratic trading, underperformance against the sector, and a longer-term decline may contribute to the current negative sentiment surrounding the stock.