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

Platform comparison

Market context

The S&P 500 (tracked via SPY) is currently trading near $752–$755 on July 16, 2026, with the market assessing whether it closes above a specific strike level by the end of the trading day. The 0% crowd-implied probability for a “YES” outcome suggests the strike price is set significantly above the current price, likely near or above the all-time high of $757.62 recorded on June 2, 2026[5].

Historically, SPY has shown limited intraday surges beyond its 52-week high of $760.40, with the asset averaging $678.40 over the past year and closing 2025 at $678.32[5]. Comparable cases where the index breached prior highs often coincided with strong AI-driven earnings or dovish Fed signals, yet recent volatility from tariff inflation and rate hike fears has capped momentum[3]. This context supports the near-zero probability, as a close above the strike would require an unprecedented intraday breakout.

Traders should monitor the Federal Reserve’s interest rate decision schedule and any major AI-sector earnings announcements released today, as these are primary catalysts for equity moves[3]. Benzinga notes SPY at $752.18 as of 8:14 AM EDT, while Convex reports $754.81 later in the day, indicating modest intraday gains but no surge toward the strike[1][2]. On Polymarket, this market is priced in implied probability (0%), whereas Kalshi and Betfair would display decimal odds (e.g., 1.00), and Smarkets typically applies lower fees but requires stricter KYC—key divergences for platform comparison on robinhoodpredictionmarkets.com.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares S&P 500 (SPY) closes above … on July 16? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.