Will Anthropic IPO Before OpenAI? Kalshi Market Deadlocked at 48-50 Cents

The Trade

Someone just mass-bought YES contracts betting that Anthropic will IPO before OpenAI. The biggest move came at 4:04 PM ET — an 89-contract YES sweep worth about $44, followed immediately by a 19-contract YES fill worth another $10. That single sweep was part of a 3-fill, 113-contract burst totaling roughly $54 on the YES side. Trading at 48c bid and 50c ask — roughly a 48 to 50% implied chance that Anthropic crosses the finish line first.

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The Price Impact

This is a newly launched market, so all movement is from zero. The 4:04 PM YES sweep absorbed existing NO-side liquidity without collapsing the ask, which suggests the book is thin but not one-sided. Earlier in the session, NO traders pushed back hard — a 68-contract NO block at 1:57 PM and a 40-contract NO block at 1:40 PM totaling about $54. The late YES surge nudged the contract count to 153 YES versus 108 NO, but the spread held tight at just 2 cents, suggesting the market absorbed both sides without dramatic slippage.

What This Market Is

Kalshi is a regulated prediction market where you bet real money on real-world outcomes. This contract asks whether Anthropic will IPO before OpenAI. If you buy YES at 50 cents and Anthropic goes public first, you collect $1. If OpenAI beats them or neither IPOs, you lose your 50 cents.

The Bottom Line

153 YES contracts versus 108 NO — a 58-to-42 split that suggests the crowd leans toward Anthropic moving first, but barely. This market is a coin flip with strong two-sided conviction on day one.

This is market commentary, not financial advice. Always verify contract terms and do your own research before placing any trades.

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