Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Klarna UK) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
99% | 1% | 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 |
|---|---|
| $735 | 99% |
| $730 | 99% |
| $720 | 99% |
| $715 | 99% |
| $725 | 90% |
| $740 | 9% |
| $765 | 1% |
| $760 | 1% |
| $750 | 1% |
| $745 | 1% |
| $755 | 0% |
Market context
On 27 July 2026, the S&P 500 tracking ETF SPY will close at a specific price level. The 1% implied probability suggests the crowd expects the index to remain below that threshold with near-certainty, indicating either an extremely bullish baseline or a strike price set well above consensus forecasts. Historical volatility in the S&P 500 rarely produces single-day moves exceeding 3–4% absent major shocks, and July tends toward lower trading volumes as summer holidays fragment liquidity across European and US markets.
Comparable outcomes from previous July settlement windows show that when probabilities compress below 2%, the underlying strike is typically 5–8% above the prevailing spot price. The Federal Reserve's monetary policy stance, earnings season tail-end data, and geopolitical risk appetite shape mid-summer equity positioning. Any unexpected inflation print or central bank communication in late July could shift volatility, though the narrow window between now and settlement limits the scope for major repricing.
Traders monitoring this market should track the Fed's communications calendar and any corporate earnings surprises in the final week of July. Deposit friction remains material for UK participants: SEPA transfers settle within 1–2 business days, whilst Klarna's instant funding option reduces on-ramp delays but carries higher fees. Book depth depends on sustained inflows from continental European traders, whose payment preferences favour SEPA rails. Withdrawal liquidity via USDC stablecoin transfers offers faster settlement for those exiting positions ahead of the 20:00 UTC close.
Methodology
This page compares S&P 500 (SPY) closes above … on July 27? with a focus on payment rails and deposit friction. Polymarket accepts USDC on Polygon only; Kalshi only ACH/Plaid (US only); Betfair card/SEPA in EU/UK; Manifold no deposit. Polymarket Klarna UK additionally offers Klarna and SOFORT as fiat on-ramps to USDC. Live odds reflect the Polymarket order book.
Resolution & payout
Settlement path determines payout latency. Polymarket settles on-chain (USDC, minutes). Broker frontends like Polymarket Klarna UK add Klarna/SOFORT as fiat withdrawal options with T+1 processing. Kalshi: USD via ACH (T+1 to T+3). Betfair: local currency via card/SEPA (T+1 to T+5).
FAQ
- How does Klarna deposit work on Polymarket Klarna UK?
- You enter the deposit amount in EUR/GBP, choose Klarna as the method, run through Klarna's standard authentication (Pay Later or Direct Bank Transfer), and Polymarket Klarna UK converts internally to USDC for the Polymarket order book. Processing: typically under 30 minutes.
- What does SOFORT cost as a deposit method?
- Polymarket Klarna UK charges no fees for SOFORT. The only cost is the internal FX spread (typically <1%) on EUR→USDC conversion. SOFORT itself has no end-user fees — the platform absorbs acquirer costs.
- Which payment methods are supported?
- Klarna (Pay Now / Pay Later), SOFORT, SEPA bank transfer, credit card (Visa/Mastercard), Apple Pay, Google Pay, and direct USDC deposit on Polygon. Availability depends on your jurisdiction.
- How fast is SEPA deposit?
- SEPA Instant: under 10 seconds. SEPA Standard: 1-2 business days. Both accepted fee-free; the internal USDC conversion runs automatically once EUR lands in the platform account.
- Can I deposit with a credit card?
- Yes, Visa and Mastercard. Credit card deposits carry a ~2.5% acquirer surcharge (standard for card payments). Apple Pay and Google Pay run on the same card rails — same surcharge.
Trade S&P 500 (SPY) closes above … on July 27? on Polymarket Klarna UK
Live order book, 0% fees, USDC settlement in seconds.
Open live market →