Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
4% | 96% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
4% | 96% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Market context
Donald Trump’s attendance at Donald Trump Jr.’s Memorial Day weekend wedding is the deciding fact here, with the market resolving on whether he is physically present at any point during the event. The current 3% implied chance is extremely low, which suggests traders think a no-show is far more likely than a late appearance. That is broadly consistent with a narrow definition of attendance and the fact that only clear, credible reporting will count for settlement.
There is some recent context pointing in both directions. Trump has publicly said he would “try and make” the wedding, but also described the timing as “not good timing for me”, which leaves room for a last-minute change. The price should be read against the family’s history of high-profile events drawing uncertain presidential schedules: if he remains in the US and any pool report, wire story or broadcast confirms a brief appearance, the market would likely reprice quickly. Absence from pre-wedding travel, official photos, or contemporaneous coverage from Reuters, AP or major outlets would reinforce the current low probability.
The main catalysts are schedule and reporting, not speculation. Traders should watch for any White House or pool movement over the holiday weekend, statements from the Trump family, and same-day coverage from established media on the ceremony’s location and guest list. Because the wedding is set for Memorial Day weekend and the settlement window closes on 25 May 2026, even a short, unreported appearance could matter only if credible sources capture it. If the event were postponed beyond 30 June, the market would resolve to No.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Where can I trade this market with the lowest fees?
- On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.
- 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.
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