Sensex, Nifty hit 3-week high; IT stocks plunge on Anthropic AI launch impact

• Indian markets extended gains, with Nifty 50 closing at 25,776, up 0.19%, reaching a three-week high.
• IT stocks faced significant pressure, with the Nifty IT index down over 5% due to a plunge in Wall Street software stocks.
• ADRs of Infosys and Wipro fell 5-6% following the new Anthropic AI launch.
• The Nifty Bank index showed strength, rising 300 points to the 60,300 mark.
• Top gainers included Lloyds Metals, BLS International, IDBI Bank, Valor Estate, Adani Power, JBM Auto, and Kaynes Tech.