Mumbai, Sept. 16 -- The domestic equity indices traded with modest gains in the early-afternoon trade, supported by investor optimism amid signs of progress in U.S. trade negotiations with China and India. Market focus has now shifted to the Federal Reserve's upcoming interest rate decision, which is expected to influence near-term sentiment.

The Nifty traded above the 25,150 mark. Media stocks advanced after declining in the past two consecutive trading sessions.

At 12:27 ST, the barometer index, the S&P BSE Sensex, rallied 397.57 points or 0.49% to 82,183.31. The Nifty 50 index added 121.60 points or 0.49% to 25,190.80.

In the broader market, the S&P BSE Mid-Cap index rose 0.43% and the S&P BSE Small-Cap index added 0.61%.

The marke...