Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets UK) Pick polygram.ink (preferred broker) |
70% | 30% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
70% | 30% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| <40 | 70% |
| 40-64 | 24% |
| 65-89 | 4% |
| 90-114 | 1% |
| 115-139 | 0% |
| 140-164 | 0% |
| 165-189 | 0% |
| 190-214 | 0% |
| 215-239 | 0% |
| 240+ | 0% |
Market context
Elon Musk’s posting frequency on X between midday ET on 11 July and midday ET on 13 July 2026 is the sole determinant for this contract, which closes at 16:00 UTC on 13 July. The crowd currently assigns a 69% probability to the YES outcome, implying a belief that his activity will fall within the market’s defined threshold, despite the inherent volatility of his weekend social media behaviour.
Historical patterns show Musk’s output fluctuates sharply between weekdays and weekends, with July 2026 data indicating a prior seven-day window (3–10 July) yielding 160–179 posts, a volume that would likely breach the upper limit of this contract’s range if sustained [9]. Conversely, a single-day count of 22 posts on 13 June 2026 suggests that even moderate activity can cluster unpredictably, making the 40–64 tweet range a plausible but contested median rather than a consensus certainty [3].
Traders should monitor SpaceX announcements, particularly the planned deployment of V3 Starlink satellites during the 13th Starship test flight next week, which often triggers Musk’s real-time commentary [5]. Any regulatory developments, such as the recent rejection of his bid to void a Twitter fraud verdict by a US judge, could also spur reactive posting [8]. The divergence between the 69% implied probability here and the 47.5% chance assigned to the 40–64 range on Lines.com highlights a meaningful split in market sentiment on whether his weekend pace will stay within bounds [1].
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.
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 Elon Musk # tweets July 11 - July 13, 2026? on Best Prediction Markets UK
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