Mumbai, Oct. 1 -- The key equity benchmarks traded with substantial gains in the early afternoon trade after the Reserve Bank of India's (RBI) monetary policy committee (MPC) left the repo rate unchanged. The Nifty traded above 24,750 mark.

PSU bank shares declined after advancing in the past three consecutive trading sessions.

At 12:25 IST, the barometer index, the S&P BSE Sensex advanced 550.53 points or 0.69% to 80,823.81. The Nifty 50 index added 161.50 points or 0.66% to 24,772.60.

In the broader market, the S&P BSE Mid-Cap index rose 0.32% and the S&P BSE Small-Cap index declined 0.44%.

The market breadth was positive. On the BSE, 2,430 shares rose and 1,466 shares fell. A total of 182 shares were unchanged.

Derivatives:

The ...