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

Platform comparison

Market context

The underlying event is whether the SPDR S&P 500 ETF Trust (SPY) settles above a specific threshold on 20 July 2026, a date now in the past relative to the current trading session. With the crowd-implied probability at 0% for the YES outcome, the market reflects a near-certainty that the closing price failed to breach the strike, suggesting the actual settlement price fell short of the threshold by a material margin.

Historical price action frames this low probability as consistent with recent volatility patterns. SPY reached an all-time high of $757.62 on 2 June 2026 but has since retraced, closing at $732.97 by 24 June 2026, with a 52-week high of $760.40 and a current share price sitting 3.7% below that peak [3]. A programmatically driven trader would treat the 0% probability as a signal that the threshold likely exceeds the recent trading range, possibly targeting levels above $750 where resistance has historically formed, and would back-test conditional orders against the June pullback to validate the settlement logic.

Traders should monitor the Federal Reserve’s interest rate schedule and quarterly earnings releases from major index constituents, as these catalysts drive intraday volatility and closing prints. Recent market commentary from CNBC highlights SPY’s sensitivity to macro data, noting its 52-week range of $591.89 to $760.40 and the +0.54% daily gain in the most recent session [1]. For automated strategies, integrating real-time feeds for rate decisions and earnings announcements into conditional order logic ensures execution aligns with the settlement window’s dependencies, particularly when the threshold sits near the upper bound of the current range.

Sources: 1 · 2 · 3

Methodology

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

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 Bot UK. 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.

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.