Market2026-09-12

Sam Altman ruled out an OpenAI stock market listing in 2026. He told Fortune that going public now would be ill-advised given safety concerns. He said OpenAI feels no pressure to list. Asked whether 2027 was the plan instead, he said only "not 2026". Altman suggested leading AI firms may soon announce a deal to slow development and address safety risks. Anthropic chief Dario Amodei published an essay urging firms to slow capability gains. Altman said he agreed and that pacing the frontier had been discussed inside OpenAI. Anthropic still expects to market its own listing from mid-October, per people familiar with the matter. US lawmakers in both parties are calling for new AI rules after extinction warnings from two Anthropic researchers.

What changed

OpenAI was reported in June to be weighing whether to delay a listing.

  • potentially trillion-dollar IPO
  • Anthropic IPO marketing from mid-October

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