Why is Sterlite Tech. falling/rising?

As of 18-Sep, Sterlite Technologies Ltd is currently priced at 122.75, reflecting a decrease of 1.1, or 0.89%. The stock has been underperforming recently, having fallen for the last two days with a total decline of 0.97%. Despite this short-term downturn, the stock has shown a strong performance over the past week, gaining 6.37%, although it has experienced a significant drop of 10.14% over the past month. The company has reported positive results in its last two quarters, with notable growth in operating profit and net sales, which suggests underlying strength that may support the stock in the longer term.
In the broader market context, while Sterlite Technologies has generated a return of 27.85% over the past year, the benchmark Sensex has only increased by 0.08%, indicating that the stock has outperformed the market significantly despite its recent decline. However, the stock's performance today has underperformed its sector by 0.91%, and there has been a notable decrease in investor participation, with delivery volume falling by 39.29% against the five-day average. This combination of factors suggests that while the company has strong fundamentals, short-term market dynamics and reduced trading activity may be contributing to the current price decline.