Which movie has biggest opening weekend in 2026?

Platform comparison

Market context

Avengers: Doomsday currently commands the strongest trader consensus for the largest domestic opening weekend in 2026, with Polymarket pricing the contract at 76% YES despite the crowd-implied probability for the binary outcome sitting at 0% in some views due to data lag or interface quirks. Traders on Polygon are buying and selling conditional tokens in USDC, betting that the Marvel film’s prime December 18 holiday slot and its reunion of Robert Downey Jr. with the Russo brothers will deliver a record-breaking debut that eclipses all other 2026 releases [4].

Historically, holiday slots and franchise momentum have driven the biggest openings, as seen when Toy Story 5 shattered franchise records with an estimated $160 million domestic debut earlier in the year, only to be surpassed by later contenders like The Odyssey at $124 million and, most dramatically, the Super Mario Galaxy movie at $372 million [2][3][5]. Yet those figures are preliminary or from earlier in the year; the market now hinges on whether Avengers: Doomsday can outperform even these highs, with The Numbers’ updated box office forecasts solidifying it as the leading candidate [4].

Key catalysts include final domestic 3-day opening weekend figures (not studio estimates) once the film releases, alongside any schedule shifts or surprise announcements from Disney. Traders should monitor official box office reports from The Numbers, which will be the settlement source, and watch for any late-breaking news on release dates or marketing pushes that could alter expectations [4]. Recent coverage from Variety highlights how Nolan’s The Odyssey stunned with $124 million, setting a high bar that Avengers must now exceed to win this market [5].

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.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Scam? trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.