Why is GMM Pfaudler falling/rising?

As of 28-Aug, GMM Pfaudler Ltd's stock price is currently at 1,191.40, reflecting a decline of 15.6 points or 1.29%. The stock has been experiencing a consecutive fall for the last seven days, resulting in a total return of -8.2% during this period. Over the past week, the stock has underperformed the benchmark Sensex, which has decreased by 2.34%. Additionally, the stock's performance over the last month shows a decline of 7.73%, while the Sensex has only dropped by 1.00%. Despite a high management efficiency indicated by a return on capital employed (ROCE) of 17.72% and a strong ability to service debt, the stock's price is pressured by a significant drop in delivery volume, which has fallen by 56.42% against the five-day average.
In the broader market context, GMM Pfaudler's year-to-date return of +0.63% contrasts sharply with the Sensex's gain of +2.48%, indicating underperformance relative to the market. The stock has also shown a negative trend over the past year, with a return of -14.81% compared to the Sensex's decline of only 2.08%. The company's high institutional holdings at 36.78% suggest that knowledgeable investors are still confident in its fundamentals, as evidenced by a slight increase in their stake. However, the overall negative sentiment is compounded by the stock's significant underperformance over three and five years, where it has dropped by 29.26% and 38.17%, respectively, compared to the benchmark's positive returns.