Why is Shaily Engineer. falling/rising?

As of 22-Sep, Shaily Engineering Plastics Ltd is experiencing a decline in its stock price, currently at Rs 2,310.00, reflecting a decrease of Rs 43.3 or 1.84%. The stock has underperformed its sector by 1.14% today and has been on a downward trend for the last three days, accumulating a total loss of 6.7% during this period. Despite its strong long-term performance, with a 122.49% return over the past year and a significant increase in net profit and operating profit, the stock's recent movement is affected by falling investor participation, as evidenced by a 44.61% drop in delivery volume compared to the five-day average. Additionally, while the company has a low Debt to EBITDA ratio and high institutional holdings, the stock is facing pressure due to its very expensive valuation and a high PEG ratio.
In the broader market context, Shaily Engineering Plastics Ltd has shown a positive return of 0.87% over the past week, outperforming the Sensex, which has gained only 0.46% in the same timeframe. However, the stock's recent decline contrasts with its strong historical performance, indicating potential volatility despite its solid fundamentals. The market's overall sentiment may be influencing the stock's price, as it has been trading below its moving averages for the shorter term, suggesting a cautious outlook among investors.