anthropic valuation odds: $1.5T Rung Slides to 73% After $70-$78 IPO Range

The anthropic valuation odds took a haircut overnight: after Anthropic set its IPO price range at $70 to $78 a share, Polymarket's "valuation hits $1.5T by December 31" rung slid about 16 points in a day to roughly 73% Yes at ~05:59 UTC on November 11. The $1.75T and $2T rungs fell even harder, to about 35.5% and 14%.

What actually happened

Anthropic filed an updated S-1 on Tuesday with its first price range. It plans to sell 825 million Class A shares at $70 to $78, of which 801.4 million are new and 23.6 million come from existing holders. At the top of the range the deal raises about $64.4 billion, with an underwriter option for 123.75 million more shares, Decrypt reported.

Seven suppliers, Nvidia, Google, AMD, Broadcom, Micron, Microsoft and TSMC, agreed to buy a combined $26 billion of non-voting Class N stock at the IPO price in a private placement. TechCrunch adds that each of the seven co-founders plans to sell 3,378,378 shares, roughly $250 million each at the $74 midpoint.

The headline valuation depends on what you count. Decrypt calculates about $916 billion to $1.02 trillion using the roughly 13.09 billion shares the filing says will be outstanding. CNBC's fully diluted figure tops out near $1.405 trillion. That is up from the $965 billion valuation of Anthropic's May funding round, but below the up-to-$2 trillion talk Reuters had flagged earlier, as The Verge noted.

What Polymarket thinks

The valuation market resolves on Nasdaq Private Market prices before the IPO and, after listing, on the IPO-implied valuation and the public market cap. That cap uses the highest regular-hours price on any trading day through December 31, multiplied by "total outstanding common shares at the relevant time."

At about 05:59 UTC on November 11:

• ↑$1.5T: ~73% Yes (bid 0.73 / ask 0.734), down about 16 points in a day
• ↑$1.75T: ~35.5%, down about 21.5 points
• ↑$2.0T: ~14%, down about 17.5 points
• ↑$2.5T: ~5.5%; ↑$3.0T: ~4.5%
• ↓$800B: ~8%, up about 4 points

The event has traded about $7.3M in total, with roughly $291K in the last 24 hours.

The share-count trap

Here is the part that matters most. Anthropic has several share classes: voting Class A, non-voting Class N held by partners like Google and Amazon, and supervoting Class F for the founders. The market's rule says "total outstanding common shares," and how that gets counted changes everything.

Our own math: on 13.09 billion shares, a $1.5T cap needs a price around $115, roughly 47% above the top of the range. On the share count implied by CNBC's $1.405T fully diluted figure, about 18 billion, $1.5T needs only about $83, or roughly 7% above $78. The crowd at 73% seems to lean toward the bigger count, a first-day pop, or both. Read the full rules before you assume either.

The pre-IPO path matters less now. The anthropic valuation odds can also resolve on a Nasdaq Private Market print, but since the $1.5T rung is still open, no qualifying private price at that level has counted so far. From here, the listing itself is the main event.

We covered the first-day market cap brackets in anthropic ipo market cap odds and the raise-size market in anthropic ipo raise odds. Note that the top-of-range raise of about $64.4B now sits just under the $65B line that led that market yesterday.

What to do as a reader

If you trade the anthropic valuation odds, open the rules on the market page and check how the share count will be sourced after listing. Then watch three dates: the final pricing on November 18, the first trade on November 19, and the first few closes after that, because the high-water mark through December 31 is what counts.

IPO pops are not guaranteed, especially after a sell-off in AI stocks. Size small, avoid leverage, and do not mistake a 73% price for a sure thing. Nothing here is financial advice.