Mumbai, June 12 -- The domestic equity benchmarks traded with major gains in mid-afternoon trade, supported by hopes of a U.S.-Iran peace deal, easing crude oil prices and positive global cues that boosted investor sentiment. Nifty traded tad above the 23,550 mark. Auto shares advanced after declining in the two past trading sessions.

At 14:30 IST, the barometer index, the S&P BSE Sensex, jumped 1,457.67 points or 1.97% to 75,296.40. The Nifty 50 index rose 391.60 points or 1.70% to 23,555.60.

The broader market outperformed the frontline indices. The BSE 150 MidCap Index gained 1.99% and the BSE 250 SmallCap Index added 2.30%.

The market breadth was strong. On the BSE, 3,079 shares rose and 1,061 shares fell. A total of 178 shares wer...