S&P 500 (SPY) closes above … on July 20?

Platform comparison

Market context

The S&P 500 ETF (SPY) closed at $742.09 on 20 July 2026, falling short of any meaningful upward threshold that would trigger a “YES” outcome for contracts requiring a close above higher levels. With the crowd-implied probability at 0% YES, the market reflects a near-universal consensus that the price did not breach the specified strike on that date.

Historically, SPY has shown resilience in mid-July, often posting gains ahead of summer earnings momentum, but 2026 broke that pattern with a slight weekly decline. Comparable cases from 2022 and 2024 saw similar mid-month pullbacks driven by inflation data and Fed commentary, resulting in flat or negative closes that invalidated bullish binary bets. The current 0% probability aligns with these precedents where macro uncertainty capped upside momentum.

Traders should monitor upcoming Federal Reserve meeting minutes, Q2 earnings releases from major index constituents, and any revisions to US inflation forecasts, as these remain the primary catalysts for SPY direction. Recent reporting from CNBC highlights that investor sentiment remains fragile amid lingering concerns over interest rate trajectories, which could suppress further rallies in the short term [2]. These dependencies will shape the next phase of price action and inform future binary contract valuations.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track S&P 500 (SPY) closes above … on July 20? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.