Mumbai, Oct. 15 -- The key equity benchmarks rallied on Thursday, 15 October, as easing US Treasury yields and softer crude oil prices improved investor sentiment. The Sensex surged over 1,500 points, while the Nifty briefly reclaimed the 23,000 mark. The unwinding of global AI and semiconductor stocks also supported Indian IT shares, with the Nifty IT index gaining about 11% over five sessions. Reliance Industries rose sharply after Jio Platforms announced details of its proposed IPO, while large-cap banking stocks advanced ahead of their quarterly results. The rally was supported by buying in heavyweight stocks and expectations around September-quarter earnings, even as global markets remained under pressure from concerns over AI-relate...