Mathematical Money | November 12, 2026 Anthropic's amended prospectus, filed on 10 November, offers 825 million shares at $70 to $78. The company's own investor material says the price is expected to be set on 18 November, with trading on Nasdaq expected the next day under the ticker ANT. None of that is final. The filing itself says it "is not complete and may be changed". Here is the part that caught me. $ZM$, the video-call company, carries an Anthropic stake at $3.13 billion in its last quarterly filing. Zoom's whole market value at the 11 November close was $28.6 billion. So if you own Zoom, about 11% of what you paid for is Anthropic. I hold no Anthropic exposure worth the name, and this post is not a view on whether to buy the listing. It is a check you can run on any hot IPO, becau