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, a level that sits well below the all-time high of $757.62 recorded in early June[1][6]. Given the current crowd-implied probability of 0% for closing above any unspecified threshold, the market appears to be pricing in a scenario where the index fails to breach a significant resistance level, likely one near or above the recent peak. Historically, mid-summer periods in strong bull markets like 2024 and 2025 have seen sustained gains, yet the 1.2% drop on the settlement day suggests a temporary reversal or consolidation phase that traders are interpreting as a failure to break out[1][6].

Traders should monitor upcoming campaign-finance disclosures and scheduled political debates, as these events often trigger volatility in risk assets like the SPY. Recent polling aggregator data indicates shifting voter sentiment that could influence market expectations ahead of the next major convention, acting as the primary catalyst for the current probability lean[1]. With the settlement window ending on 20 July, the market is heavily leaning on the immediate price action and the lack of a positive catalyst to push the index above its recent high, reinforcing the 0% YES probability[1][2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks S&P 500 (SPY) closes above … on July 20? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.