Why is SML ISUZU falling/rising?

As of 22-Sep, SML ISUZU Ltd's stock price is currently at Rs 3,546.75, reflecting a decline of Rs 186.65 or 5.0%. Today's price summary indicates that the stock underperformed its sector by 3.54%, reaching an intraday low of Rs 3,546.75. The stock has shown a significant decline of 21.82% over the past month, while it has delivered impressive returns of 152.15% year-to-date. Despite this recent downturn, the company has demonstrated healthy long-term growth, with net sales increasing at an annual rate of 28.56% and operating profit at 32.21%. Additionally, institutional investors have increased their stake, indicating confidence in the company's fundamentals, which may help stabilize the stock in the long run.
Broader market context shows that while SML ISUZU has struggled in the short term, the benchmark Sensex has gained 1.05% over the past month. The stock's recent performance contrasts sharply with its strong historical returns, having outperformed the BSE500 in each of the last three annual periods. This divergence suggests that while the stock is currently facing challenges, the broader market remains relatively stable, and the long-term outlook for SML ISUZU remains positive due to increasing institutional participation and consistent returns over the years.