The key benchmark indices were trading flat in afternoon deals. The rail stocks had given up some of their early gains after the railway budget was presented. The Sensex was trading little changed at 14,668, up 10 points. The Nifty was up 5 points at 14,668. Among the rail infrastructure stocks, Stone Infra was up nearly 5 per cent while Integra Hindustan Control had advanced 4.5 per cent. Simplex Casting and Hind Rectifier was trading flat after paring early gains. Stocks like IVRCL and L&T were trading with modest gains. In the Sensex pack, HDFC was the biggest gainer, up nearly 4 per cent. M&M and Tata Steel were the other main gainers in the pack. IT stocks were under some pressure after disappointing jobs data from the US.