Will Anthropic’s valuation hit … by December 31?

Platform comparison

Market context

Polymarket is pricing the contract at **12% YES**, which implies traders think Anthropic’s NPM-reported private valuation reaching the threshold by 31 December is a low-probability outcome for now. Because settlement depends on Nasdaq Private Market’s daily published price, the market is effectively trading the chance that a new secondary or financing datapoint lands high enough, not just whether headline sentiment around the company stays strong.

The recent valuation path matters. CNBC reported Anthropic closed a $30 billion round in February at a **$380 billion** post-money valuation, then Reuters and the *New York Times* reported later fundraising discussions at around **$950 billion**. CNBC, the *Guardian* and others then reported a **$65 billion** round in May that lifted Anthropic to **$965 billion**, which places the current threshold in reach if a further rerating or large private transaction is printed before year-end.[1][4][5][6][8] That framing is important on Polymarket: conditional tokens on Polygon settle against the stated NPM source, so a market can move on an actual published NPM price even if the broader story is just “more bullish financing talk”.

Traders should watch for any fresh secondary sale, new funding announcement, or updated NPM print after a deal closes, because the market only resolves on the NPM price published for trading days, updated the following afternoon. Calendar risk also matters: if relevant business-day data are still missing by 1 January 2027, the market can stay open briefly into 4 January, so late publishing delays could still affect outcome timing.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Alternative UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.