Why is KRN Heat Exchan falling/rising?

As of 25-Aug, KRN Heat Exchanger and Refrigeration Ltd's stock price is currently at Rs 942.15, reflecting a decrease of Rs 12.6 or 1.32%. Today's price summary indicates that the stock underperformed its sector by 2.43%, with an intraday high of Rs 988.95 and a low of Rs 934.4. Despite this decline, the stock has shown strong performance over the past week and month, with returns of 8.17% and 12.02%, respectively. The company benefits from high management efficiency, a strong ability to service debt, and healthy long-term growth, as evidenced by a 32% annual growth in net sales. However, the stock is considered very expensive with a high Price to Book Value ratio, which may be contributing to the current price decline.
In the broader market context, KRN Heat Exchanger has significantly outperformed the benchmark Sensex over the year-to-date period, with a return of 34.33% compared to the Sensex's 4.48%. This strong performance could indicate investor confidence, but the recent price drop may reflect profit-taking or concerns over valuation. Additionally, while institutional investor participation has increased, suggesting a positive outlook from more sophisticated investors, the stock's recent underperformance relative to its sector may have raised caution among retail investors.