Market BSE tweaks tech to allow India oil prices to trade in negative Updated : April 28, 2020 02:24 PM IST BSE has announced that it has upgraded the system to execute trades at negative prices for the commodity derivatives segment. Last week, the price of a barrel of benchmark US oil plunged below $0 a barrel for the first time in history. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.