The domestic benchmark indices ended flat on Thursday as selling was seen in IT, FMCG, metal, media, and private bank sectors on Nifty. Adani Ports was the top gainer. At closing, Adani Ports' shares surged over 5 per cent to Rs 1,243.90. Adani Green Energy closed Rs 33.20 up, at Rs 1,064.30 apiece.