The Indian stock market started the month of August witnessing a record-breaking high as the Nifty index surpassed the 25,000 mark for the first time. Early in the trading session, the benchmark index Nifty surged 0.34 per cent, reflecting a touching 25,037 but settled at 25,000 by 11.40 am. The Sensex gained 236.59 points or 0.29 per cent to reach 81,977.93, before settling at 81,813 by 11.40 am.