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PoliticsSPXUp or DownDaily

S&P 500 (SPX) Opens Up or Down on August 3?

Near certain

$594K traded

Probability over time

last 30 days
68%Yes · +32 pts over period100%

What this means

Traders currently price this at 100% — the market's collective estimate that it happens. The market leans toward yes, though it's far from settled. The odds have been broadly stable over the last week.

How this resolves

This market will resolve to "Up" if the official S&P 500 Index open price for S&P 500 (SPX) on August 3 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading day. This market will resolve to "Down" if the official S&P 500 Index open price for S&P 500 (SPX) on August 3 is lower than the official S&P 500 Index closing price for SPX on the most recent prior trading day. E.g., ordinarily, a market on Monday would refer to the previous Friday for its most recent closing price, unless that Friday were a market holiday, in which case it would refer to Thursday, or the next most recent trading day. If the two prices are exactly equal, this market will resolve 50-50. Note that all figures will be rounded to the nearest cent using standard rounding. If SPX does not trade at all during the regular session, the market will resolve 50-50. If either of t…

Closed Aug 3, 2026 · awaiting resolutionSource of truth: https://www.wsj.com/market-data/stocks

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