Tata Elxsi among 5 F&O stocks with a sharp rise in futures open interest by ET Markets | April 23, 2026 10:04 am | Indian Stocks, Market, News Futures open interest surged over 13% across nine NSE stocks, led by Tata Elxsi, Havells, CDSL, HCL Tech and SBI Life, signaling rising trader participation and expanding derivative positions.