Largest IPO by market cap in 2026?

Platform comparison

Market context

SpaceX has confidentially filed for an initial public offering targeting a June 2026 roadshow with a valuation of $1.75 trillion, positioning it to shatter every historical record for IPO size. This filing, confirmed in April, sets the stage for a debut that would dwarf the $25.6 billion raised by Saudi Aramco in 2019 and the $21.8 billion from Alibaba’s 2014 listing, making the current market consensus heavily skewed toward this aerospace giant [3][5].

The historical precedent for such mega-offerings is thin, with no venture-backed tech IPO ever approaching a $1 trillion valuation, which frames the 86% probability assigned to SpaceX as well-supported by the confirmed filing and targeted valuation [1][2]. Traders should monitor the official SEC roadshow schedule for June, any adjustments to the price range, and the competitive moves from Anthropic, which holds a distant 13% probability but lacks a comparable valuation anchor [1][4].

Recent reports indicate OpenAI and Anthropic are also eyeing listings, yet SpaceX’s valuation of roughly $1.25 trillion to $1.75 trillion remains the dominant catalyst that could swallow the entire market pie if the listing proceeds [4]. The key dependency is the successful completion of the June roadshow and the subsequent first trading day closing price, which will determine the final market capitalization [5]. Any delay past December 2026 would invalidate the outcome, making the timeline the most critical factor to watch [2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Largest IPO by market cap in 2026?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

Can I bet on individual matches?

Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

Can I import form data and lineups?

This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.