Why is Hind. Unilever falling/rising?

As of 12-Sep, Hindustan Unilever Ltd's stock price is currently at 2,584.00, reflecting a decrease of 37.5 points or 1.43%. The stock has underperformed its sector today by 0.54% and has experienced a consecutive decline over the last two days, resulting in a total drop of 2.26%. In terms of returns, the stock has shown a negative performance over the past week at -1.87% and a significant decline of 12.51% over the past year, despite a positive 4.04% return over the last month. While the stock maintains a high management efficiency with a return on equity of 19.31% and a low debt-to-equity ratio, the falling investor participation, as indicated by a 24.24% drop in delivery volume, suggests a lack of confidence among investors, contributing to the recent price decline.
Broader market context indicates that while Hindustan Unilever's performance has been weaker than the benchmark Sensex, which has gained 1.48% over the past week, the stock has outperformed the index on a year-to-date basis with a return of 10.99% compared to the Sensex's 4.82%. However, the stock's long-term performance is concerning, as it has lagged significantly behind the Sensex over the past three years, with a mere 0.14% increase compared to the benchmark's 36.25% rise. This disparity in performance, combined with the recent underperformance and declining investor interest, suggests that while the company has strong fundamentals, external market pressures and investor sentiment are currently weighing on its stock price.