Why is Sumitomo Chemi. falling/rising?

As of 19-Sep, Sumitomo Chemical India Ltd's stock price is rising, currently at 615.00, reflecting an increase of 51.15 or 9.07%. The stock has outperformed its sector today by 9.4%, reaching an intraday high of Rs 617.5. Over the past week, the stock has shown a return of +11.11%, while its one-month return stands at +5.34%. Despite a decline in delivery volume by 21.6% against the five-day average, the stock is trading above all key moving averages, indicating strong momentum. Positive financial metrics, such as a high return on equity (ROE) of 19.61% and a low debt-to-equity ratio, contribute to the stock's appeal. However, concerns about long-term growth persist, given the modest annual growth rates in net sales and operating profit over the last five years.
In the broader market context, Sumitomo Chemical's recent performance significantly exceeds that of the Sensex, which has only gained 0.88% over the past week. The stock's year-to-date return of +14.95% also outpaces the Sensex's +5.74%, highlighting its relative strength in the market. While the stock has generated a return of 4.95% over the past year, it has done so with a high price-to-book value, suggesting it may be trading at a premium compared to its peers. This combination of strong short-term performance against a backdrop of cautious long-term growth expectations creates a complex picture for investors considering the stock.