Crisil Research estimates that revenues of Indian corporates excluding financial services and oil companies grew by 6-7 per cent (y-o-y) in FY14's second quarter that ended on September 30. While overall EBITDA margins are estimated to be stable (y-o-y) at 17.8 per cent in the quarter driven by strong performance of export-driven sectors, over half of the 53 sectors are expected to report a decline in margins.