Indian stock markets opened in the green on Wednesday, with the BSE Sensex and NSE Nifty-50 indices trading higher. The Sensex reached a new 52-week high. While mid-cap stocks saw gains, the small-cap index declined. The IT sector was a top performer, while Realty and Energy faced losses. Several low-priced stocks, including Vista Pharmaceuticals and SecureKloud Technologies, hit their upper circuit limits.