Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Robinhood Prediction Markets) Pick polygram.ink (preferred broker) |
11% | 89% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
11% | 89% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| December 31 | 11% |
| September 30 | 5% |
| August 31 | 2% |
| July 31 | 0% |
| June 24 | 0% |
| March 31 | 0% |
| April 30 | 0% |
| June 30 | 0% |
| May 31 | 0% |
| April 15 | 0% |
Market context
Kharg Island is still Iran’s main crude-export hub, so the market is really asking whether control over a core piece of Iranian territory changes hands before the settlement deadline. Reuters reported on 14 March that US forces struck military targets on the island, but the same report described Kharg as the hub for roughly 90% of Iran’s oil exports, not a place that had been captured or handed over[11].
That distinction matters because the settlement wording requires *primary governmental or military control* to move away from Iran; strikes, raids, bombardment, or a temporary interruption of shipping would not be enough. Comparable coverage from the BBC, CFR, Britannica and other outlets consistently frames Kharg as an entrenched logistics and export node tied to Iran’s mainland pipelines and guarded infrastructure, which means the threshold for a “Yes” outcome is much higher than headline risk alone suggests[1][3][13][16]. In practice, that helps explain why platforms that show decimal odds, such as Betfair or Smarkets, may quote very low prices even when the implied probability is not literally zero; Polymarket and Kalshi instead present the market more directly as a yes/no probability, with any fee or spread differences affecting execution rather than the underlying event standard.
For traders, the key catalysts are not social-media rumours but formal indicators of territorial change: any statement from Tehran, US or regional military briefings, satellite-confirmed occupation, or recognition by an internationally backed authority. Reuters’ March reporting on strikes is relevant because it shows the island is exposed to attack, yet no cited source indicates a transfer of control[11]. On Robinhood-style prediction markets, that means the main question is whether a *sustained takeover* appears before 31 March 2026, not whether Kharg is damaged, blockaded, or briefly disrupted.
Methodology
This page compares Kharg Island no longer under Iranian control by 2026? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.
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
- What does Polymarket cost vs Kalshi?
- Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
- Which platform has the deepest liquidity?
- Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.
- Which platform is accessible globally?
- Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.
- Are all these platforms regulated?
- No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.
- Which platform supports Klarna/SOFORT?
- Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.
Trade Kharg Island no longer under Iranian control by 2026? on Robinhood Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
Open live market →