Mumbai/IBNS, Feb. 26 -- The Indian stock market opened on a positive note on Thursday, with the BSE Sensex rising 142 points and the NSE Nifty 50 gaining 73 points in early trade, media reports said.

The rally followed strong cues from Asian and US markets.

Persistent Systems and Tech Mahindra emerged among the biggest gainers, pushing the Nifty IT index up by around 1.5 percent in early trading.

Tech Mahindra, Infosys, HCL Technologies and Tata Consultancy Services were among the top gainers on the Sensex.

Market expert Anil Singhvi told Zee Business that investors should remain cautious while investing in IT stocks, citing uncertainty around developments in Artificial Intelligence.

He warned that the recent surge in IT stocks could...