Chip stocks tumble as AI leaders call for development pause

Major semiconductor stocks fell sharply Monday morning after leaders of prominent artificial intelligence companies called for a pause in advancing the most powerful AI models, citing safety concerns that have unsettled investors across global technology markets.

Nvidia shares dropped 2% in premarket trading, while Broadcom declined 3%, Intel fell 5%, and Marvell Technology retreated 7%. The selloff extended beyond U.S. markets, with South Korea's Kospi index down 3.26% and Japan's Nikkei 225 falling 0.81%, according to Quartz.

The catalyst for concern

Anthropic CEO Dario Amodei published an essay Saturday arguing that AI companies must pull back on developing their most advanced models due to safety risks these systems present. In a Sunday interview with CBS News, Amodei identified uncertainty about China's participation as the biggest obstacle to implementing such a slowdown. Other prominent technology figures endorsed the proposal, CNBC reported.

The market reaction intensified after OpenAI CEO Sam Altman told an interviewer Saturday that pursuing an initial public offering this year would be "ill-advised," adding to questions about the AI sector's near-term direction.

Nasdaq-100 futures fell 1.5% ahead of Monday's open, with S&P 500 futures down 0.6% and Dow Jones Industrial Average futures shedding 114 points, or 0.2%.

Why it matters

The coordinated call for slower AI development from industry leaders represents a significant shift in tone for a sector that has been racing to deploy increasingly capable models. For chip manufacturers like Nvidia that have seen explosive growth tied to AI infrastructure demand, any pause in model advancement could directly impact revenue projections and capital expenditure plans from their largest customers. The market's swift negative reaction suggests investors view the safety debate as a material business risk rather than abstract ethical concern.

Oil prices compound pressure

Markets were also absorbing a 3% surge in WTI crude futures, which climbed above $103 per barrel, with Brent futures rising past $108. The spike followed Saudi Arabia's decision to shut a pipeline that served as a critical route for crude exports through the Strait of Hormuz region after drone strikes by Iran-aligned militants in Iraq, The Wall Street Journal reported.

Last week marked the first time since May that U.S. crude prices exceeded $100 per barrel. The energy price surge contributed to the Dow's 1.6% weekly decline—its worst performance since March—while the S&P 500 and Nasdaq Composite each fell roughly 0.8% and 0.7%.

The Federal Reserve begins its September policy meeting this week, with fed funds futures markets pricing in an 86% probability of a rate increase.

These details were first reported by Quartz.