SpaceX retakes lead on Polymarket for 2026's biggest IPO
SpaceX has regained the lead on Polymarket as the favorite for 2026's largest initial public offering. The contract measures first-day closing market capitalization. SpaceX's roughly $2.1 trillion debut-day value is now the benchmark. Anthropic had edged ahead but its expected valuation slipped to about $1.5 trillion, cooling trader interest in the AI startup. The shift leaves SpaceX back in front on the prediction market.
Polymarket traders now anchor 2026 IPO expectations to a $2.1 trillion SpaceX debut, a figure that shapes sentiment across the platform's corporate-event lineup. That number becomes the reference point for valuation markets on pre-IPO companies like the SpaceX valuation market for October 2026 Polymarket listed days ago. Traders holding overlapping SpaceX and Anthropic contracts must recalibrate hedges against a unified benchmark rather than a horse race.
For the platform, the repricing validates its high-stakes private-company contracts as liquidity magnets that compete with equity futures for narrative attention. The risk is concentration: if SpaceX delays or downsizes its offering, the $2.1 trillion anchor drags down linked contract values across multiple expiry dates. Thin resolution paths for multi-year private-market bets mean trader capital can lock up without a clear IPO calendar.
Joins recent activity by Polymarket and Kalshi on SpaceX and Anthropic timeline bets, including a separate SpaceX valuation contract and the Tesla-SpaceX merger odds that swung to 60% after a Barclays note.