Nvidia surge boosts Nasdaq futures while debt-ceiling debacle damps Dow By: MarketWatch May 25, 2023 at 04:50 AM EDT U.S. stock futures were mixed as Nvidia results boosted tech but debt-ceiling concerns weighed on the Dow. Read More >> Related Stocks: Adv Micro Devices C3.ai, Inc. Compass Inc Cl A DJIA NVIDIA Corp