Why is TCS falling/rising?

As of 19-Sep, Tata Consultancy Services Ltd. is experiencing a decline in its stock price, currently at 3,169.85, which reflects a decrease of 6.4 points or 0.2%. The stock has shown a trend reversal, falling after three consecutive days of gains. Despite this recent downturn, the stock's performance over the past week is positive, with a return of 1.14%, outperforming the Sensex, which has returned 0.88%. The stock is currently trading above its 5-day, 20-day, and 50-day moving averages, but below its 100-day and 200-day moving averages. Additionally, there has been a rise in investor participation, with a delivery volume increase of 12.35% against the 5-day average, and the stock offers a high dividend yield of 4%.
In the broader market context, TCS's year-to-date return of -22.63% significantly underperforms the Sensex's gain of 5.74%, indicating a challenging environment for the stock relative to the market. While the stock has shown strong long-term fundamentals, including a high return on equity and healthy growth in net sales, its recent performance has been lackluster compared to its peers. The company maintains high institutional holdings at 23.48%, suggesting confidence from larger investors. However, the stock's negative return over the past year, coupled with a high PEG ratio of 6.6, may contribute to its current price decline, despite its attractive valuation and strong operational cash flow reported in June.