U.S. stock index futures slipped on Monday as renewed tariff uncertainty unnerved investors after President Donald Trump announced a new 15% duty following a Supreme Court ruling that struck down his broader levies. The Supreme Court, in a 6-3 ruling on Friday, voided most of the tariffs Trump imposed last year, finding that the emergency law he relied on did not allow the imposition of tariffs. Get a daily digest of breaking business news straight to your inbox with the Reuters Business newsletter. Sign up here. Using a different statute, Trump announced first a 10%, then a 15%, global levy that could last five months while the administration searches for more durable workarounds. Advertisement · Scroll to continue "It's really hard from a business standpoint when you are at a company to know how do you plan if you're not even sure about suppliers, supply chains and what the tariffs are going to look like," said Arthur Laffer Jr., president of Laffer Tengler Investments. "That's a huge concern for corporate America and why it was really important to get that hammered out and ironed out as fast as possible, so that companies know what the playing field really looks like, and they can plan accordingly." All three main stock indexes clocked weekly gains on Friday as markets took the Supreme Court's decision in stride, with the Nasdaq (.IXIC), opens new tab snapping a five-week losing streak. Advertisement · Scroll to continue At 07:00 a.m. ET, Dow E-minis were down 162 points, or 0.33%, Nasdaq 100 E-minis were down 129 points, or 0.51%, and S&P 500 E-minis were down 23.75 points, or 0.34%. Most megacap and growth stocks were lower in premarket trading, though Alphabet (GOOGL.O), opens new tab bucked the trend with a 0.3% gain after rising around 4% on Friday. Nvidia (NVDA.O), opens new tab inched 0.1% lower ahead of quarterly earnings due on Wednesday, with the tech-heavy U.S. markets facing a major test as commentary from the world's largest company by market capitalization could offer key insight about the AI sector that has been hit by growing investor skepticism. High stock valuations and AI disruption fears have lately pressured technology and other sectors, as investors question if massive AI spending is paying off. Earnings from major software firms including Salesforce (CRM.N), opens new tab and Intuit (INTU.O), opens new tab will be on the radar later this week, given that the S&P 500 software and services index (.SPLRCIS), opens new tab has slumped more than 20% this year amid growing AI disruption fears. "Oil prices ease back as Iran indicates it is prepared to make concessions on its nuclear programme.
Among other movers on Monday, Eli Lilly (LLY.N), opens new tab rose 3.2% after rival Novo Nordisk's (NOVOb.CO), opens new tab obesity drug fell short against Lilly's drug in a Copenhagen trial. Merck (MRK.N), opens new tab edged 1% higher after the drugmaker said it will split its human-health business into two divisions. Domino's Pizza (DPZ.O), opens new tab climbed 4.5% after the fast-food chain beat Wall Street estimates for fourth-quarter U.S. same-store sales. Cryptocurrency and blockchain-related stocks dropped as bitcoin lost around 2%, with exchange operator Coinbase Global (COIN.O), opens new tab and crypto hoarder Strategy (MSTR.O), opens new tab falling more than 2% each. Gold and silver miners were broadly higher as prices of both precious metals gained. Top gold miner Newmont (NEM.N), opens new tab climbed 1% while silver miner Hecla Mining (HL.N), opens new tab added 2%.
