S&P 500 (SPX) Up or Down on June 24?

Platform comparison

Market context

The underlying event is whether the S&P 500 closes higher on Wednesday, 24 June 2026 than it did on the prior trading day, which is Monday, 22 June given Tuesday’s market holiday. Current data shows the index fell 1.44% on 22 June to 7,500.44, then slipped further to 7,365.46 on 23 June, with today’s close at 7,369.30—still below the prior day’s level, making a “Down” resolution highly probable[2][3].

Historically, single-day reversals after multi-day declines in June are rare; over the past 15 years, the S&P 500 has closed higher the day after a 1.4%+ drop only 38% of the time, and never when the decline followed a 1.5% loss two days prior[1][6]. The current 0% crowd-implied probability aligns with this pattern, as the index is now 6.27% below its one-month peak and 5.11% year-to-date lower, reflecting persistent selling pressure[1].

Traders should watch for any pre-market announcements from major components like Apple or Microsoft, scheduled earnings releases, or Federal Reserve commentary that could trigger a sharp intraday swing. With the 52-week high at 7,620.90 reached on 2 June and no significant support established since, the market remains vulnerable to further downside unless a catalyst emerges before the 20:00 UTC settlement window[5][6]. Recent volatility has been driven by evaporating war premiums and gold price collapses, suggesting macro fragility continues[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On Sport Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What does it cost to trade on Sport Prediction?

Zero. Sport Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Sport Prediction triggers a quick verification flow that finishes in minutes.

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.