Why is Railtel Corpn. falling/rising?

As of 23-Sep, Railtel Corporation of India Ltd's stock price is currently at 382.25, reflecting a decrease of 5.25 points or 1.35%. The stock has been underperforming, having fallen consecutively for the last four days, resulting in a total decline of 4.63% during this period. Additionally, the stock's performance over the past week shows a decrease of 3.64%, while its year-to-date performance is down by 5.41%. Despite a healthy long-term growth rate in net sales of 27.33% and a low debt-to-equity ratio, the stock is experiencing falling investor participation, with delivery volume dropping by 56.58% compared to the five-day average. Institutional investors have increased their stake slightly, which may provide some support, but overall, the stock's recent movement indicates a lack of momentum.
Broader Market Context: In comparison to the benchmark Sensex, Railtel's short-term performance has been notably weaker, with a 1-week decline of 3.64% against the Sensex's minor drop of 0.34%. While the stock has shown a positive return of 7.83% over the past month, its year-on-year performance is significantly worse than the benchmark, with a decline of 18.58% compared to the Sensex's 3.33% drop. This underperformance in both short-term and long-term contexts suggests that the stock is facing challenges that are not aligned with broader market trends, contributing to its current decline.