Will Trump attend his son's wedding?

Platform comparison

Market context

Donald Trump Jr.’s second wedding is due over Memorial Day weekend, and the market now prices only a 3% chance that Donald Trump will attend in person. That is a sharp signal that traders think the most likely outcome is still absence, even though the event is imminent and the window for a surprise appearance has narrowed to a matter of days.

This is the sort of market that tends to swing on public schedules rather than sentiment. Trump has a long record of treating family events as contingent on security, travel and political timing, and in the past he has sometimes signalled intent without committing to a firm appearance. A recent clip circulating online showed him saying he would “try” to attend, but not giving a definitive yes, which fits the low but non-zero pricing: possible, yet far from the base case.

The main things to watch now are any formal confirmation from the family, Trump’s public travel calendar, and whether reporting indicates a last-minute change in plans. Because the settlement standard is physical attendance at any point during the event, even a brief appearance would count. If there is no credible reporting of him being on site by the end of the window, the market should continue to lean heavily towards No.

Sources: 1 · 2

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.

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 does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.