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SPY (SPY) Up or Down on May 27?

Five-platform snapshot of "SPY (SPY) Up or Down on May 27?" — live Polymarket pricing, plus how Kalshi, Betfair and Manifold structure the same contract.

100% YES 0% NO Volume: $271K Closes: 27 May 2026
Trade on Polymarket Scam? →
SPY (SPY) Up or Down on May 27?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket Scam? Pick
polygram.ink
 100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Open on Polymarket Scam? →
Polymarket
polymarket.com
 100% 0% 0% Geo-blocked in US/UK/EU USDC, on-chain Open on Polymarket Scam? →
Kalshi
kalshi.com
 — — Up to 7% per trade US-only, KYC required USD Open on Polymarket Scam? →
Betfair Exchange
betfair.com
 — — 2-5% commission Full KYC from first trade GBP / EUR Open on Polymarket Scam? →
Manifold Markets
manifold.markets
 — — Play-money (mana) None — play-money Mana (no cash-out) Open on Polymarket Scam? →

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 Polymarket Scam?.

Market context

The SPY (SPY) Up or Down on May 27? prediction market currently prices this outcome at 100% YES. This market will resolve to "Up" if the Close price for S&P 500 (SPY) on May 27, 2026 is higher than the Close price for S&P 500 (SPY) on the most recent prior trading day. This market will resolve t…

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Scam?, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?
Polymarket Scam? is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
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 it cost to trade on Polymarket Scam??
Zero. Polymarket Scam? routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
Do I need to KYC for this market?
Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Scam? triggers a quick verification flow that finishes in minutes.
Oliver HughesOliver HughesBlockchain & Crypto ReporterandEmma RobertsEmma RobertsFinancial Journalist

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