Why is Sundaram Finance falling/rising?

As of 27-Jun, Sundaram Finance Ltd is experiencing a price increase, currently at 5,053.70, reflecting a rise of 190.5 or 3.92%. The stock has shown strong performance today, outperforming its sector by 3.83% and reaching an intraday high of Rs 5096.15, which is a 4.79% increase. Over the past week, the stock has gained 4.53%, although it has seen a decline of 2.44% over the past month. The stock's long-term fundamentals remain robust, with a strong average Return on Equity (ROE) of 13.90% and positive quarterly results, including the highest PAT and net sales figures. However, there has been a decline in investor participation, with delivery volume falling by 20.36% against the 5-day average.
In the broader market context, Sundaram Finance's recent performance has outpaced the Sensex, which has only increased by 2.00% over the past week. The stock's year-to-date return of 21.63% significantly exceeds the Sensex's 7.58%, indicating strong relative strength. Additionally, the stock has consistently outperformed the BSE 500 over the last three years, generating substantial returns compared to the benchmark. This combination of strong fundamentals, positive short-term performance, and high institutional holdings suggests that the stock's upward movement is supported by solid investor confidence, despite the recent dip in trading volume.