Read more about Benchmarks hit day's high; select auto stocks correct on Business Standard. Key equity barometers extended gains and hit record high levels in mid-morning trade. At 11:25 IST, the barometer index, the S&P BSE Sensex, was up 354.17 points or 0.69% to 51,702.94. The Nifty 50 index has added 115.40 points or 0.76% to