Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 200+ | 100% |
| <20 | 0% |
| 20-39 | 0% |
| 40-59 | 0% |
| 60-79 | 0% |
| 80-99 | 0% |
| 100-119 | 0% |
| 120-139 | 0% |
| 140-159 | 0% |
| 160-179 | 0% |
| 180-199 | 0% |
Market context
Donald Trump’s Truth Social activity between 3 and 10 July 2026 is the underlying event, yet Polymarket prices the YES contract at 0% today, implying traders expect zero qualifying posts. The market settles on the “Post Counter” figure from his official account, counting main feed posts, quote posts and reposts while excluding replies unless they appear on the main feed. Settlement occurs on-chain via USDC on Polygon, where conditional tokens lock the outcome once the tracker captures the final count.
Historically, Trump’s posting behaviour has been volatile but rarely silent for a full week. In July 2025, he posted 105 times in a single manic burst hours after a federal judge ruled against him, while in early July 2026 he shared multiple posts about the Reflecting Pool refurbishments on 5 July [1][9]. A 0% probability now contradicts this pattern unless a specific constraint—such as a travel schedule, security briefing, or platform outage—has halted activity. The absence of posts during the July 4 Mount Rushmore festivities, where security officials reported no credible threats, suggests a possible quiet period, but not a guaranteed week-long gap [6].
Traders should monitor Trump’s public schedule for the America 250th anniversary events and any executive-order announcements, as these often trigger Truth Social commentary. The Federal Register shows he signed 43 executive orders in 2026, a volume that typically correlates with social media activity [10]. A recent USA Today report confirms he posted on 5 July about the Reflecting Pool, indicating he remains active mid-week [1]. Watch for Iran-related announcements, as past threats on Iranian infrastructure have driven immediate posts [2][4]. If no new posts appear by 12:00 PM ET on 10 July, the market will resolve NO.
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
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- 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.
- 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.
- 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 Donald Trump # Truth Social posts July 3 - July 10, … on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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