Why is SML ISUZU falling/rising?

As of 23-Sep, SML ISUZU Ltd's stock price is currently at 3,417.55, reflecting a decline of 129.8 points or 3.66%. The stock has been underperforming, having fallen consecutively for the last two days with a total decline of 8.46%. It opened the day with a loss of 2.74% and reached an intraday low of Rs 3,380, which is a 4.72% drop. Despite this recent downturn, the company has shown strong 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 by 0.75%, indicating a positive outlook from more knowledgeable market participants.
In the broader market context, SML ISUZU's short-term performance has significantly lagged behind the benchmark, with a 1-week return of -10.11% compared to the Sensex's -0.34%. While the stock has generated impressive returns over the longer term, including a 142.97% increase year-to-date, the recent performance suggests a disconnect with the overall market sentiment. The auto-trucks sector has gained 2.19%, further highlighting SML ISUZU's struggles in the current environment. The stock's liquidity remains adequate, but the recent price movements indicate a challenging period for the company amidst broader market trends.