Why is Zenith Drugs falling/rising?

As of 22-Aug, Zenith Drugs Ltd is experiencing a decline in its stock price, currently at 73.00, which reflects a decrease of 2.85 or 3.76%. The stock has underperformed its sector today by 4.1%. Additionally, the stock's delivery volume has significantly decreased by 62.41% compared to the 5-day average, indicating falling investor participation. In terms of returns, the stock has shown a positive performance over the past week with a gain of 13.53%, but it has underperformed on a year-to-date basis with a decline of 9.65%. The stock is currently trading higher than its 5-day, 20-day, and 50-day moving averages but lower than its 100-day and 200-day moving averages, suggesting mixed momentum.
In the broader market context, the Sensex has increased by 0.97% over the past week, contrasting with Zenith Drugs' strong weekly performance. However, the stock's year-to-date performance is notably worse than the Sensex, which has risen by 5.18% during the same period. This disparity highlights the stock's struggles relative to the overall market. The lack of available positive or negative factors further complicates the understanding of the stock's recent movements, as no specific catalysts or concerns have been identified to explain the current price decline.