Who will Trump publicly insult by July 31?

Platform comparison

Market context

Donald Trump’s public rhetoric remains the main driver here: he has repeatedly used personal and professional attacks on opponents in rallies and press settings, including a recent AP report of him calling Kamala Harris “mentally impaired” and urging that she be “impeached and prosecuted”.[1] That makes a 26% crowd-implied chance for a fresh insult by the July 31 deadline plausible, but still below the level that usually reflects near-certainty in markets that price Trump’s habit of attacking rivals.

Historically, this kind of contract tends to be read less as a question of *whether* Trump will be abrasive and more as a question of *who* is in the firing line and whether the target appears in a public setting before expiry. Recent comparable prediction markets on public insults have shown that traders often anchor to event timing rather than baseline behaviour, because Trump can go days without a new headline and then produce multiple attacks in a single appearance.[3] In practice, that means the current price is best compared with short-dated event risk rather than long-run partisan volatility.

For traders, the key catalysts are scheduled appearances, interviews, and late-breaking news that could prompt him to respond personally to a rival, prosecutor, judge, donor, or media figure. The biggest risk to the 26% line is a live rally or press availability before 31 July, while the main reason it could drift lower is simple silence: if no notable public remarks emerge before the settlement window closes, the contract resolves No. Prediction-market pricing may therefore stay above some sportsbook-style instinctive estimates if commentators think Trump’s communication style is unusually insult-prone, but the hard expiry keeps the downside to any “wait and see” position tightly bounded.[2]

Sources: 1 · 2 · 3

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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.