Highest grossing movie in 2026?

Platform comparison

Market context

The latest shift is that traders and box-office forecasters still have **Spider-Man: Brand New Day** as the front-runner, with Polymarket’s own event page describing it as the strongest consensus pick and citing a July 31 release slot, strong franchise appeal, and fresh trailer momentum. That leaves the market anchored less by confirmed grosses than by release calendar positioning and how much of each tentpole can be captured inside the 2026 domestic window.[14]

Historically, markets like this tend to concentrate around a small cluster of franchise titles rather than spread evenly across the slate. Current published prediction lists keep **Spider-Man: Brand New Day**, **Avengers: Doomsday**, **Toy Story 5** and **The Super Mario Galaxy Movie** well ahead of the rest, while outside views from box-office commentators also place Marvel, Pixar and Nintendo-derived titles at the top of 2026 forecasts.[1][4][12][18] The key read-through is that the 0% crowd price is not a statement about impossibility; it is more likely a sign of thin participation relative to the obvious favourites.

What traders should watch next is the release calendar and marketing cadence for the handful of films that can realistically reach the top spot. Any delay, title change, or trailer-driven momentum shift for the major contenders would matter, especially for late-year releases whose domestic grosses must still land by 31 December 2026 under the market rules.[14] The other dependency is Box Office Mojo’s year-end domestic calendar totals: if a film opens late or skews heavily into January, it can lose ground here even if its full theatrical run looks stronger elsewhere.[14]

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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

UK Frequently Asked Questions

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.