Why is Shaily Engineer. falling/rising?

As of 18-Sep, Shaily Engineering Plastics Ltd is experiencing a decline in its stock price, currently at Rs 2,375.00, reflecting a decrease of Rs 100.9 or 4.08%. Today's price summary indicates that the stock has underperformed its sector by 3.43% and has fallen after three consecutive days of gains, touching an intraday low of Rs 2,374.4. Despite this drop, the stock has shown strong performance over the past week, month, year, and even over three years, with returns of 4.35%, 31.58%, 143.60%, and 499.70% respectively. The company has demonstrated a strong ability to service debt and has reported impressive growth in operating profit and net profit, with positive results for the last seven consecutive quarters. However, the stock is considered very expensive based on its valuation metrics, which may contribute to the current price decline.
In the broader market context, while Shaily Engineering has outperformed the Sensex over various time frames, it is currently facing a short-term setback. The Sensex has gained 1.80% over the past week, while Shaily's stock has increased by 4.35% during the same period, indicating that it has been performing well relative to the benchmark until this recent decline. The high institutional holdings suggest confidence in the company's fundamentals, but the stock's recent price drop may reflect concerns over its valuation amidst strong historical performance.