"Spider-Man: Brand New Day" 2nd Weekend Box Office (Lower Strikes)

Platform comparison

Market context

The main shift in the past 24-48 hours is that the second-weekend read has tightened around a very large but still clearly decelerating hold: Deadline’s Friday-afternoon projection put domestic weekend business at $135 million-$140 million, with IMAX now included in the tally, while other trackers have circulated a broader $142 million-$160 million band.[1][11][13] That is materially below the film’s $355 million domestic opening, so the market is now being priced as a question of how hard the front-loaded debut fades rather than whether it stays in blockbuster territory.[14]

History argues for caution on the upside after a record-adjacent launch. The film opened with an estimated $355 million domestically, the second-highest debut ever, and opened to a level that commonly produces a steep sophomore drop even for event titles.[14][5] Comparable superhero sequels that launch this high usually face heavy front-loading, and the current trading level at 1% YES suggests the market is treating an upper-tail second weekend as very unlikely unless actuals meaningfully beat the trade forecasts.[1][13] The relevant comparison is not whether the film remains No. 1, but whether it can hold enough demand to clear the market’s upper strike.

The immediate catalyst is the final weekend actuals, which The Numbers will use once Friday-Sunday figures are final rather than studio estimates.[1] Traders should watch Saturday play, any late-weekend IMAX or premium-format strength, and Monday’s finalised domestic totals, because the market resolves on the reported weekend gross and can move on even small changes if the number lands near a bracket edge.[1] Box office coverage also notes that final figures are not expected until Monday, so there is still scope for late revision between estimates and settlement data.[1][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

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.

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.

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%.