Polymarket data shows October still favored for Anthropic IPO despite roadshow delays
Polymarket traders price October at 63% probability for Anthropic's initial public offering despite reported delays to the AI company's roadshow and public prospectus. The pricing persists even after setbacks, with the prediction market data offering a real-time sentiment read on one of the most anticipated tech listings. The figure reflects continued investor confidence in the IPO's October timing despite the roadshow delays.
The stubborn 63% October pricing on Polymarket isolates a methodological problem that prediction-market operators cannot ignore. Traders there are betting on a ranking contract — which month tops the list — while Kalshi runs a binary structure on the same underlying event. That split means the two venues answer different questions, yet both get cited as 'the' Anthropic IPO probability. Portfolio tools treat these as correlated hedges, but they will not move together.
For anyone building systematic strategies across prediction markets, the fragmentation forces a due-diligence choice about which venue's methodology governs each position. The real risk is silent basis mismatch: traders sizing on headline odds alone may not realize they hold divergent exposures. Institutional capital that wants prediction markets as an alternative data layer must price this opacity into entry decisions.