Stock markets update: In a positive start to the trading day, benchmark stock market indices saw significant gains on Thursday. The Sensex surged by over 300 points, reaching a record high, while the Nifty50 crossed the 25,000 mark for the first time in history. In the early trade, the 30-share BSE Sensex climbed 334.83 points at 82,076.17. Meanwhile, the Nifty was also up by 104.70 points to 25,055.85.