Mumbai: Indian indices open flat with positive bias on Thursday. Sensex is up 44.66 points or 0.07% at 60702.11. Nifty is up 17 points or 0.09% at 18060.00. About 1459 shares have advanced, 537 shares declined, and 112 shares are unchanged. Top gainers on the NSE are NTPC, Tata Consumer, Britannia, ITC, while top losers are Bajaj finance, Infosys, PowerGrid.