Stock market today: Dow, S&P 500, Nasdaq futures waver as leaked Anthropic IPO details raise alarm about AI risks

US stock futures wavered as a leaked Anthropic (ANTH.PVT) IPO prospectus and scrapped OpenAI (OPAI.PVT) next-generation model raised more questions about AI safety, while geopolitical tensions continued to support higher oil and bond prices.Futures on the Dow Jones Industrial Average (YM=F) and the S&P 500 (ES=F) slipped by 0.1%, extending Monday's losses. Contracts for the Nasdaq-100 (NQ=F) edged higher.AMD (AMD) stock was little changed after the Lisa Su-led company acquired Fei-Fei Li's AI model startup World Labs for $8.2 billion in a deal viewed as a talent and AI insights play.News of that acquisition was soon eclipsed by a Reuters report detailing a leaked Anthropic IPO prospectus, revealing that the AI lab is targeting a $2 trillion valuation — more than double its estimated valuation of $965 billion — along with warnings that AI could pose "existential risks to humanity." Anthropic has not yet made an official filing public.The same evening, the Wall Street Journal reported that rival startup OpenAI shelved its frontier AI model due to safety concerns that emerged during internal testing. That came after OpenAI disclosed further agentic AI breaches over the weekend, fueling AI safety concerns.A group of tech executives, including Anthropic CEO Dario Amodei, Meta CEO Mark Zuckerberg, Nvidia CEO Jensen Huang, and Google CEO Sundar Pichai, is scheduled to dine with President Trump at a White House luncheon on Tuesday afternoon amid the growing unease over AI risks to the public.Oil prices, meanwhile, plodded higher, even as Saudi Arabia resumed exports through its East-West pipeline and US and Iranian officials met with mediators to resume disjointed talks. Brent crude oil futures (BZ=F), the global benchmark, hovered near $100 per barrel, while WTI crude futures (CL=F) traded at $93 per barrel.The economic data calendar features some significant releases on Tuesday: the Job Openings and Labor Turnover Survey and the Conference Board's consumer confidence numbers. Carnival Corporation (CCL) and CarMax (KMX) are among the companies reporting quarterly earnings results.