Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
83% | 17% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
83% | 17% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 70-72m | 83% |
| 72m+ | 14% |
| 68-70m | 2% |
| <66m | 0% |
| 66-68m | 0% |
Market context
Spider-Man: Brand New Day is scheduled for theatrical release on 8 August 2026, with this market tracking its domestic box office performance during the third weekend (14–16 August). The 0% crowd probability suggests traders expect the film to underperform the lower threshold brackets substantially, or that settlement data may prove unavailable through The Numbers by the deadline of 16 August 2026.
Third-weekend box office retention depends heavily on opening-weekend performance and critical reception. Spider-Man films historically maintain 50–65% of their opening weekend gross in the second frame, then decline a further 40–55% by the third weekend. The 2019 Spider-Man: Far From Home earned $39.3m opening weekend and $30.3m in its third weekend; the 2021 No Way Home opened to $260m and held $52m by weekend three. A film tracking toward lower brackets would likely have opened below $80m domestically, signalling weak word-of-mouth or market saturation from competing releases.
Traders should monitor advance ticket sales data from platforms like Fandango and early critical reviews from major outlets (Variety, The Hollywood Reporter) in the week preceding release. Summer 2026 scheduling—particularly whether major tentpole competition launches in late July or early August—will influence audience availability. Box Office Pro and The Numbers themselves publish weekend projections mid-week; significant downward revisions before 14 August would reinforce the current market lean toward lower performance tiers.
Methodology
Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for "Spider-Man: Brand New Day" 3rd Weekend Box Office (Lower Strikes) plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.
Resolution & payout
Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.
Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.
UK Frequently Asked Questions
- What resolution source is used for elections?
- Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.
- Can prediction markets influence election outcomes?
- Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.
- Which platform has the deepest political liquidity?
- Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.
- How fast do political markets react to news?
- High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.
- Are UK election prediction markets available from the UK?
- Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.
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