The Nifty IT index saw a significant decline on November 18, marking its third drop in four sessions. This downturn is attributed to diminished expectations of a Federal Reserve interest rate cut in December, growing global concerns about an Artificial Intelligence (AI) bubble, investors awaiting crucial US economic data, and profit-booking following recent gains. Major IT stocks like Tech Mahindra, LTI Mindtree, and Infosys experienced notable losses.