Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
3% | 97% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
3% | 97% | 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 Jr.’s second wedding is due over Memorial Day weekend, and the market is pricing Donald Trump’s attendance at just 3%, making “No” the heavy favourite. On that read, the consensus is that the president is unlikely to turn up in person unless his schedule is explicitly cleared and publicly flagged in advance. At this level, the upside case is mostly a late change in plans or a brief appearance; the base case is that the event goes ahead without him, which leaves little room for a surprise unless reporting shifts quickly.
The closest comparator is Trump’s long record of treating family events as subordinate to office and media priorities, with appearances often narrowed by travel, security and timetable constraints. Recent reporting has also pushed the market lower: TMZ said on 21 May that Trump would “try” to attend but would not commit, while video clips from the Oval Office showed him saying it was “not good timing” and that he might be too busy. For traders, the key catalysts are any White House travel schedule, a formal confirmation from Trump or his team, and whether the Bahamas trip is folded into an official or semi-official movement plan. The value question is whether 3% already assumes almost no chance of a last-minute cameo, or whether a thin sliver remains if his calendar opens unexpectedly.
Methodology
This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.
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
- 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.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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.
- 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.
Trade Will Trump attend his son's wedding? on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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