TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 20, 4:00 PM EST
Polymarket
S&P 500 (SPY) closes above ___ on July 20?
S&P 500 (SPY) closes above ___ on July 20?
Prediction market odds often diverge from traditional analyst price targets because they reflect real-money incentives and continuous updating rather than periodic research reports. While equity analysts publish forecasts based on fundamental analysis, this market aggregates the collective judgment of traders betting on the actual outcome. Comparing the implied probability here to consensus analyst views can reveal whether the market is pricing in more optimism or caution than the Street expects. Both sources offer value, but they operate on different timelines and information sets.
On Polymarket, this market is priced through an automated market maker that converts trader positions into real-time probabilities. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Each outcome has a price between 0 and 1 (or 0–100 cents), reflecting the likelihood traders assign to that price target being reached. As traders buy or sell shares, the price adjusts dynamically. Higher prices indicate stronger conviction that SPY will close above the specified level, while lower prices suggest skepticism. Volume and bid-ask spreads on the platform indicate market depth and confidence.
This market resolves around Jul 20, 2026, once the trading day concludes and the SPY closing price is finalized. The outcome is determined by comparing the official closing price of the S&P 500 ETF on that date against the specified price target. Verification occurs through credible public financial data sources. Traders who correctly predicted whether SPY would close above the threshold receive payouts proportional to their position size, while incorrect positions expire worthless.
Major economic data releases, Federal Reserve communications, corporate earnings surprises, and geopolitical developments can all shift SPY price expectations and move this market significantly. Inflation reports, employment figures, and interest rate decisions are particularly influential for equity index direction. Sector-specific shocks—such as tech earnings misses or energy price spikes—also ripple through the broader market. Traders monitor these catalysts closely and adjust positions ahead of announcements, causing sharp probability swings. Intraday volatility and options market activity can also signal shifting expectations as the resolution date approaches.