Why is Bajaj Auto falling/rising?

As of 11-Sep, Bajaj Auto Ltd. is experiencing a decline in its stock price, currently at 9,125.00, reflecting a decrease of 110.0 points or 1.19%. The stock has underperformed its sector by 0.36% today and has been on a downward trend for the last three days, accumulating a total decline of 3.36%. Over the past week, the stock has shown a modest gain of 0.64%, but its performance over the last year has been significantly negative, with a return of -20.13%, contrasting sharply with the Sensex's slight gain of 0.03%. The stock's delivery volume has also decreased by 10.96% compared to the five-day average, indicating falling investor participation.
In the broader market context, while Bajaj Auto has shown strong long-term fundamentals, including a solid average Return on Equity (ROE) of 21.03% and healthy growth in net sales, it is currently facing challenges. The stock's valuation appears expensive with a Price to Book Value of 7.2, and it has underperformed the market significantly over the past year, with its profits declining by 5.2%. This underperformance is evident as the stock's returns have lagged behind the broader market, which has only seen a decline of 2.29% in the same timeframe. The combination of these factors contributes to the current downward pressure on Bajaj Auto's stock price.