Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
PolyGram Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on PolyGram → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on PolyGram → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on PolyGram → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on PolyGram → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on PolyGram → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on PolyGram.
Active sub-markets
Market context
For this market to resolve Yes, Iran would have to lose primary governmental or military control of Kharg Island, not merely suffer strikes, sabotage, or a temporary disruption to oil loading. That is a high bar: Kharg is Iran’s main crude export terminal, and control of the island has historically been treated as part of the state’s core energy security. In practical terms, the market is about regime change on a strategic offshore asset, not damage to port infrastructure or a short-lived interruption in exports.
Comparable cases suggest why the crowd-implied probability stays near zero. During the Iran–Iraq War, Kharg was repeatedly attacked, yet Iran retained control and exports continued after repairs; more recent Gulf incidents have generally affected shipping lanes, tankers, or loading operations rather than sovereignty over territory. On Polymarket, the quoted price is usually the cleanest read as an implied probability, while Kalshi lists prices in cents and Betfair/Smarkets in decimal odds, with fees and liquidity shaping the effective price a trader receives. For this kind of binary territorial event, all three venues typically converge on a vanishingly small chance unless there is a public indication of occupation or internationally backed administration.
The main catalysts are overt military developments, a formal Iranian loss of control, or an explicit statement from a recognised authority that another power has taken the island. Short of that, watch for official shipping notices, satellite reporting on harbour access, or sanctions-linked disruptions, but these do not meet the resolution standard on their own. Reuters has repeatedly reported Kharg’s central role in Iran’s exports and the concentration risk there, which is why even market noise can move perceptions without changing the underlying settlement test. KYC and access also matter: Polymarket and Betfair have broader international retail reach in some jurisdictions than Kalshi, while Smarkets’ fee structure can make small position sizing more sensitive to spread and commissions.
Methodology
We read Kharg Island no longer under Iranian control by 2026? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.
Resolution & payout
Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.
Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.
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.
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