S&P 500 (SPX) Opens Up or Down on July 22?

Platform comparison

Market context

The event is whether the S&P 500 opens higher or lower than the previous session’s close, so the market is really asking if the first print on 22 July clears the most recent official settlement level. Tuesday’s close was 7,509.20 after a 0.9% rise, which means the bar for an “Up” outcome is a fresh open above that level.[2]

For context, the current 0% YES price looks extreme against a market that has just had back-to-back positive sessions in some reports, but prediction markets often price the opening move more like a weighted vote between overnight futures, pre-open positioning and the prior day’s late-session drift than a simple read on the headline trend.[2][8] Comparable “open up or down” contracts tend to swing sharply when futures gap is close to flat, because even a small move around the prior close can flip the outcome at the opening auction; one pre-market read today pointed to a bearish gap of about 19 points, with the index around 7,489.9 before the bell.[1]

Traders should watch the futures tone into the open, the cash auction itself, and any late-breaking macro or tariff headlines, because those can override the previous session’s close in a matter of minutes.[1][5] The wider earnings calendar also matters: Alphabet, Tesla, IBM and Texas Instruments were due after the close, and that kind of heavyweight reporting can affect risk appetite immediately into the next session even if it does not change today’s opening calculation directly.[4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Entertainment-specific comparison page for S&P 500 (SPX) Opens Up or Down on July 22?. Polymarket's live quote (Polygon order book) shows the award probability. For awards markets, Polymarket usually has the deepest liquidity; Betfair runs comparable markets for Oscars/Emmys; Manifold for Eurovision.

Resolution & payout

Entertainment markets settle on official award ceremony or show end. Polymarket uses UMA Optimistic Oracle with a source URL to the official award website. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Which entertainment markets are available?

Oscars / Academy Awards (Best Picture, Best Director, Best Actor/Actress), Eurovision Song Contest, Emmy Awards, Grammy Awards, Golden Globes, plus reality-TV outcomes (Bachelor, Survivor). Volume usually sits in the five- to six-figure range per market.

How accurate are award predictions?

Variable. Industry-predictable awards (Oscar Best Picture) have high market accuracy (Brier ~0.15). Reality-TV outcomes with small markets carry more noise. Eurovision is notorious for market upsets due to bloc voting.

What was the top Oscar 2025 market?

Best Picture, with ~$2.8M volume on Polymarket. "Anora" started as an underdog at ~8% and closed at ~62% before the ceremony — the biggest single Oscar market swing since 2019.

Who can trade Eurovision markets?

Polymarket is globally accessible but geo-blocked in select jurisdictions — traders there use broker frontends with a different geo footprint to reach the order book. Eurovision markets have strong European liquidity; German/Austrian/Swiss flow often drives consensus.

Are there politics-entertainment crossover markets?

Yes — e.g. "Will X be parodied on SNL?", "Who will host the next Oscars?". These have thinner liquidity but offer alpha for traders who read pop-culture and political worlds together.