Anthropic’s S-1 filing reveals key details for Amazon investors

Anthropic quietly filed a draft S-1 registration statement with the SEC on June 1, making official what the AI industry had been whispering about for months: the maker of Claude is heading for the public markets. For Amazon, which has poured up to $33 billion into the company, this filing transforms what was already a monster bet into something that could meaningfully reshape the retail giant’s balance sheet. The confidential filing doesn’t include share count, pricing, or a timeline for listing. Anthropic says those details will depend on market conditions. The numbers behind the filing Just days before the S-1 hit the SEC’s desk, Anthropic closed a $65 billion Series H funding round. That round valued the company at $965 billion post-money, placing it in the same atmospheric tier as the world’s most valuable public companies, except it isn’t public yet. Anthropic’s annualized revenue run rate sat at roughly $47 billion as of May 2026. Amazon’s financial exposure here is enormous and increasingly complicated. The tech conglomerate has committed a total of $33 billion to Anthropic, structured across multiple tranches: $8 billion deployed before April 2026, another $5 billion in imm...