Mumbai, June 30 -- The key equity benchmarks erased all their early losses and traded in positive territory in mid-morning trade as investors shifted their focus to the upcoming June-quarter earnings season. Volatility is expected to remain elevated during the session due to today's NSE monthly derivatives expiry.

The Nifty traded above the 23,950 mark. Metal shares declined after advancing in the past trading session.

At 11:30 IST, the barometer index, the S&P BSE Sensex, added 171.43 points or 0.22% to 76,899.80. The Nifty 50 index gained 40.95 points or 0.17% to 23,987.30.

The broader market outperformed the frontline indices. The BSE 150 MidCap Index rose 0.37% and the BSE 250 SmallCap Index rallied 0.46%.

The market breadth was p...