China's Kimi K3 sparks chip stock slide as Sacks, Ackman warn
David Sacks and Bill Ackman warned that China's Kimi K3 model has narrowed America's lead in artificial intelligence, triggering a slide in chip stocks. Nvidia Corp. and Micron Technology Inc. fell as investors reassessed the compute requirements for the AI race. Prediction markets still favor Anthropic, while some analysts argue the new model could squeeze margins for frontier labs.

*this image is generated using AI for illustrative purposes only.
David Sacks and Bill Ackman warned that China's Kimi K3 model has narrowed America's lead in artificial intelligence, triggering a slide in chip stocks as investors reassessed the compute requirements for the AI race. The alarm followed the release of Kimi K3 from Chinese startup Moonshot, a model that reportedly topped the Frontend Code Arena leaderboard, edging past Anthropic's Claude Fable 5. Sacks, who chairs the President's Council of Advisers on Science and Technology, called the ranking "concerning," citing domestic policy risks such as moves to block new data centers and proposals to make regulators pre-approve frontier models. Ackman replied with one word: "Agreed."
Chip Stocks React
Nvidia Corp. slipped 2% Friday, extending a rough week for semiconductors as traders reassessed how much compute the AI race really needs. The move echoes early 2025's "DeepSeek moment," when a cheap Chinese model briefly erased chip valuations before buyers returned. Micron Technology Inc. has fallen harder this month. The memory maker slid into a bear market on separate worries tied to a rival Chinese IPO and possible export limits, and it rebounded slightly Friday even as the Kimi headlines spread.
Margin Math and Analyst Views
A sharper investor case came from Gavin Baker, chief investment officer at Atreides Management. He argued Kimi K3 could be "net positive for essentially every other company" while squeezing the labs that reportedly enjoy roughly 90% inference margins. Chamath Palihapitiya amplified the point, arguing frontier-grade output has collapsed in price and the model makers' margins can't survive it. "The math ain't mathing," he wrote. That cheap-token framing is contested. Kimi K3 is verbose and reasoning-heavy, so it can burn far more tokens to finish a task, which Baker said makes it 50% to 70% more expensive to run than a comparable US model despite lower headline pricing.
Prediction Market Outlook
On Polymarket, the contract on which company holds the best AI model at the end of the year still gives Anthropic more than 67%, with Moonshot in the low single digits. For a listed way to trade the theme, the cleaner read may be SpaceX, whose Grok family makes it a rare public frontier model maker. Anthropic has reportedly filed to list as soon as this year, while OpenAI is said to have pushed its debut to 2027.
Will the success of Kimi K3 accelerate US regulatory efforts to block new data centers or impose stricter export controls on chips?
How might the release of cost-competitive Chinese models impact the pricing power and profit margins of US frontier AI labs?
Could the volatility in chip stocks signal a broader market re-evaluation of the hardware demand required for the AI race?

































