Pronóstico: S&P 500 (SPY) closes above … on July 23?

Platform comparison

Market context

Polymarket is pricing this contract at **0% YES** today, which means the market is treating a close above the posted S&P 500 threshold as effectively out of reach on the settlement date. The real-world reference point is the S&P 500 cash close, while the trade itself is settled in **USDC** on **Polygon** through conditional tokens, so the contract only needs the official closing print at the window’s end rather than a narrative about intraday swings.

That reading is consistent with how far the index is currently trading below the kind of levels implied by an “above” contract. The S&P 500 closed Thursday at **7,408.30**, after a **1.2%** drop, leaving the week down **0.7%** as sharp losses in Alphabet and Tesla, plus a jump in oil, pushed the broader market lower.[2] Trading Economics separately showed the US500 at **7,396** on 23 July, also indicating a weaker session rather than a late-day recovery.[1] For comparable Polymarket-style setups, a **0%** price usually reflects either a threshold that is far out of the money or a very short path to expiry, where the closing auction matters more than ordinary day-to-day volatility.

A trader watching this market should focus on the remaining equity close mechanics and any late-session catalyst that can move the index basis, especially major earnings releases, macro data, Treasury yield moves, and energy headlines. Thursday’s sell-off was tied in part to Middle East-related oil strength, which lifted Brent to as high as **$102** a barrel and fed inflation concerns; that is the sort of shock that can spill into S&P futures and the cash close quickly.[2] On Polymarket, the position is not directional in a conventional brokerage sense: it is a bet on whether the official close lands on the correct side of the threshold, with the on-chain contract resolving from the relevant market data feed.

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Methodology

This page reviews Pronóstico: S&P 500 (SPY) closes above … on July 23? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Qué Es, which mirrors the Polymarket order book at 0% fees.

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 Qué Es. 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.