Why is SML ISUZU falling/rising?

As of 12-Sep, SML ISUZU Ltd's stock price is currently at Rs 3,717.00, reflecting an increase of Rs 50.55 or 1.38%. The stock has shown a strong performance today, outperforming its sector by 0.54% and reaching an intraday high of Rs 3,783.5, which is a 3.19% increase. However, the stock has experienced a decline of 1.69% over the past week and 5.56% over the past month, despite a remarkable year-to-date return of 164.25%. Positive factors contributing to the stock's rise include 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.
In the broader market context, while SML ISUZU's stock has outperformed the BSE500 over the last three years, it has lagged behind the Sensex in the short term, with the benchmark gaining 1.48% over the past week compared to the stock's decline. The falling investor participation, as indicated by a 29.41% drop in delivery volume against the 5-day average, may also be a concern for future price movements. Despite these short-term challenges, the stock's consistent returns and the increasing participation by institutional investors suggest a positive outlook for its long-term performance.