S&P 500 (SPY) closes above … on July 16?

Platform comparison

Market context

On 16 July 2026, the SPDR S&P 500 ETF (SPY) closed at $750.83, below any plausible threshold that would trigger a “YES” outcome for the contract asking if it closes above a specific level, which explains the crowd-implied 0% probability for YES today [1]. The market’s pricing reflects the day’s actual settlement: SPY fell from a previous close of $754.81, ending the session with a modest decline that rules out upside breaches for any reasonable strike price [1][2].

Historically, SPY has shown resilience in mid-July, often hovering near or above its 52-week high of $760.40, but this year’s session broke that pattern with a drop to $750.83, aligning with a broader pullback from the $754.81 level seen earlier [1][5]. Comparable mid-July closes in recent years frequently exceeded $740, yet the current dip below that psychological floor, combined with the 52-week range’s upper bound at $760.40, suggests limited upside momentum to justify a positive probability for any threshold above $751 [2][5].

Traders should monitor upcoming Federal Reserve commentary and Q2 earnings releases from major index constituents, as these catalysts could shift sentiment before the next settlement window. Recent market analysis notes that July volatility often spikes ahead of earnings season, with SPY’s intraday range already testing $741–$760 levels [4][5]. Any surprise in inflation data or corporate guidance could alter the trajectory, though today’s close firmly anchors the contract’s outcome at NO for any threshold above $750.83 [1][2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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.

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.