Market narratives can change quickly, and this week's performance of IT stocks is a case in point. Improved earnings and a downturn in AI-linked stocks, amid multi-billion-dollar investments failing to generate the returns stakeholders had hoped for, have helped IT stocks add Rs 2.60 lakh crore in market value. The index has risen 12%, making it the best-performing index this week.For the week, Tech Mahindra led the index with a gain of over 16%, followed by Wipro at 13%.