Why is Sumitomo Chemi. falling/rising?

As of 18-Aug, Sumitomo Chemical India Ltd is experiencing a decline in its stock price, currently at 580.15, down by 5.85 points or 1.0%. The stock has underperformed its sector by 2.02% today and has been on a consecutive fall for the last two days, resulting in a total decline of 2.38% during this period. Despite having a high management efficiency indicated by a return on equity (ROE) of 19.61% and a low debt-to-equity ratio, the company has shown poor long-term growth with net sales increasing at an annual rate of only 6.60% over the past five years. Additionally, the stock is trading at a premium compared to its peers, which may contribute to its recent price decline.
In the broader market context, the stock's performance over the past week shows a decline of 0.47%, while the benchmark Sensex has increased by 0.83%. This indicates that the stock is not only underperforming its sector but also lagging behind the overall market. Year-to-date, however, the stock has generated a positive return of 8.44%, outperforming the Sensex's 4.01%. The rising investor participation, as evidenced by a 36.09% increase in delivery volume, suggests some interest in the stock, but the overall negative sentiment reflected in its recent price movements and underperformance against the benchmark may be weighing heavily on investor confidence.