Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket App UK) Pick polygram.ink (preferred broker) |
20% | 80% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
20% | 80% | 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 |
|---|---|
| 200-219 | 20% |
| 220-239 | 19% |
| 180-199 | 16% |
| 240-259 | 16% |
| 260-279 | 11% |
| 160-179 | 8% |
| 280-299 | 6% |
| 140-159 | 3% |
| 300-319 | 3% |
| 320-339 | 2% |
| 120-139 | 1% |
| 340-359 | 1% |
| 360-379 | 1% |
| 380-399 | 0% |
| 400-419 | 0% |
| 500+ | 0% |
| 40-59 | 0% |
| 80-99 | 0% |
| 100-119 | 0% |
| <20 | 0% |
| 20-39 | 0% |
| 420-439 | 0% |
| 480-499 | 0% |
| 60-79 | 0% |
| 440-459 | 0% |
| 460-479 | 0% |
Market context
The underlying event tracks Elon Musk’s main feed posts, quote posts and reposts on X between 12:00 PM ET on 3 July and 12:00 PM ET on 10 July 2026, excluding replies unless they appear on the main feed. A programmatically minded trader would deploy a bot to poll the @elonmusk endpoint every few minutes, filtering for post types that match the tracker’s criteria while ignoring standard replies, and log timestamps to build a conditional order for settlement.
Historical patterns show Musk’s posting intensity spikes during product launches or policy shifts, yet a 1% implied probability suggests the market expects minimal activity in this window. Comparable cases include the July 2023 rebranding period, where posting surged, and the June 29–July 1 2026 window, where a similar market implied 50% probability for 40–64 posts across three days[2]. The current low probability may reflect a quiet period with no major dependencies scheduled, though Musk’s rate-limit adjustments in recent months have shown he can alter platform behaviour quickly[4].
Traders should monitor SpaceX launch schedules, as a Starlink mission on 3 July could trigger a posting surge[7], and watch for announcements related to xAI’s Grok integration or the America Party launch, which Musk confirmed on X earlier this month[10]. Any shift in verified account reading limits or new monetisation features could also catalyse activity, given Musk’s tendency to use X for real-time policy updates[1]. A sudden increase in rate limits, as seen in his recent adjustments, often precedes higher posting volumes[4].
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 Polymarket App UK. 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.
- 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 3 - July 10, 2026? on Polymarket App UK
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