Traders are getting a new tool to wager on the biggest U.S. stocks

CME Group Inc. is launching single-stock futures for over 50 of the largest U.S. companies, offering investors a leveraged tool to hedge or speculate on stocks like Nvidia and SpaceX without trading shares. The contracts, cash-settled on closing prices, target retail and institutional investors and will trade for 23 hours a day, with two contract sizes (100 and 10 shares).