Why is UltraTech Cem. falling/rising?

As of 25-Aug, UltraTech Cement Ltd's stock price is currently at Rs 12,595.40, reflecting a decrease of Rs 19.3 or 0.15%. The stock has been underperforming recently, having fallen for the last three days, resulting in a total decline of 2.06% during this period. Although the stock is close to its 52-week high, being only 2.79% away, it has underperformed its sector by 0.42% today. Despite a strong long-term growth outlook, with net sales growing at an annual rate of 15.13% and a low Debt to EBITDA ratio of 0.72 times, the recent decline may be attributed to falling investor participation, as evidenced by a significant drop in delivery volume by 42.15% against the 5-day average.
In the broader market context, UltraTech Cement's short-term performance has been weaker compared to the benchmark Sensex, which has gained 0.45% over the past week while the stock has declined by 1.25%. This divergence indicates that while the company has shown consistent returns over the long term, the current market sentiment may be affecting its short-term performance negatively. The stock's high institutional holdings at 32.63% suggest that informed investors are backing the company, yet the recent drop in trading volume may reflect a cautious approach among retail investors, contributing to the stock's current downward trend.