The market opened in the green on May 28, 2020. The previous trading session witnessed the Sensex going up by 995.92 points to end at 31,605.22 and the Nifty was up 285.90 points to close at 9,314.95.overall volumes in futures & options currently stand at 3,65 crore contracts with a turnover of Rs. 17,27,278.37 crore.