Markets JUN 26, 2026

Anthropic's Fable 5 still dark on day 14 as $965B IPO faces export-control overhang

Fable 5 and Mythos 5 have been suspended globally since June 12, injecting a regulatory-shutdown risk into a pre-IPO narrative built on a $47B run-rate and a projected first profitable quarter.

BY HENLEY MARRAST · MARKETS DESK

Claude Fable 5 and Mythos 5 have now been dark for 14 days, a globally enforced blackout that began at 5:21 p.m. ET on June 12 when a Commerce Department letter from Secretary Howard Lutnick landed on Dario Amodei’s desk and instructed Anthropic to pull its flagship line. The company complied within hours. It’s still complying.

The shutdown collides with what was meant to be the cleanest pre-IPO narrative in the AI sector. On June 1, TechCrunch reported Anthropic had filed a confidential draft S-1 with the SEC at a $965 billion post-money valuation, anchored on a $65 billion Series H. SmartAsset’s compilation of company disclosures put run-rate revenue at $47 billion in May, up from $9 billion at the end of 2025. CNBC, citing a source familiar with the figures, had Anthropic tracking $4.8 billion in Q1 and a projected $10.9 billion in Q2, with roughly $559 million in operating income, what would be the first profitable quarter in the company’s history. Claude Code alone was at a $2.5 billion run-rate in February.

That entire arc now sits underneath a regulatory off-switch.

The Commerce directive cited what Anthropic, in its own statement, described as a “narrow, non-universal” jailbreak of Fable 5’s cybersecurity safeguards. Per Fortune, the order barred access by any foreign national, including Anthropic’s own employees, which made a surgical fix operationally impossible and forced a full global suspension. Anthropic disputes that the finding warrants a recall of this scope. There’s no published timeline for restoration.

It’s the second federal action against the company this year. In early March, the Pentagon designated Anthropic a supply-chain risk, locking it out of military and defense-contractor deployments; Anthropic is challenging that designation in federal court.

The political backdrop is hostile in both directions. David Sacks, the former White House AI adviser, has publicly accused Anthropic of “regulatory capture” and “fear-mongering,” a charge that lands awkwardly against a company whose flagship product the same government just switched off.

The precedent is the story underneath the IPO. For the first time, a single Commerce Department letter has demonstrably taken a frontier lab’s headline model offline worldwide, indefinitely, fourteen days and counting. Anthropic’s S-1 will have to price that.

Sources

About the author

Henley Marrast

MARKETS DESK

Henley Marrast covers AI-equity flow, accelerator demand, and earnings prints for AI Sheet Report. She leads coverage of the public AI complex from the New York markets desk, with a focus on the daily tape and quarterly results. She has been writing about technology markets for several years.