Domestic equity benchmarks gave up initial gains on Friday morning amid selling pressure in auto, metal and IT counters, as investors remained cautious about the surging Covid-19 cases in the country. At 9:27 am, the S&P BSE Sensex index traded 2.59 points higher at 48,693.39 while the broader NSE Nifty 50 benchmark quoted at 14,690.90, down 5.60 points or 0.04 per cent from its previous close.