Why is Zenith Drugs falling/rising?

As of 19-Sep, Zenith Drugs Ltd is experiencing a decline in its stock price, currently at 64.45, which reflects a decrease of 0.7 or 1.07%. The stock has underperformed its sector today by 1.34%, and it is trading below its 5-day, 20-day, 50-day, 100-day, and 200-day moving averages. Over the past week, the stock has dropped by 5.36%, and it has seen a significant year-to-date decline of 20.24%. Despite a rise in delivery volume by 90.48% against the 5-day average, there are no positive or negative factors provided that could explain the recent movement in detail.
Broader Market Context: In comparison to the benchmark, the Sensex has shown a positive return of 0.85% over the past week, while Zenith Drugs has significantly lagged behind with its 5.36% decline. This underperformance is indicative of a broader market trend where the stock is not only falling in the short term but also has a troubling longer-term performance, with a staggering 51.52% drop over the past year compared to a slight decline of 0.35% in the Sensex. This disparity suggests that investor sentiment towards Zenith Drugs is currently negative, contributing to its falling stock price.