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OddsXray · The Board Friday, August 21, 2026 · Archived edition
The daily ledger of what the world actually believes — live odds from the prediction markets, read plainly.
The Board › Markets
Archived edition — this market has closed or left the live board; figures are the last recorded. Today’s live board ›
Markets · Firming Fast

S&P 500 (SPX) Up or Down on August 21?

A near-lock at 92% — and ripping higher, up 50 on the day. Real money's behind it.

92%
Implied probability · Near Lock
▲ 50
24h move
$80K
Volume traded
2026-08-21
Resolves

What it resolves on

This market will resolve to "Up" if the official S&P 500 Index closing price for S&P 500 (SPX) on Friday, August 21, 2026 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 closing price for S&P 500 (SPX) on Friday, August 21, 2026 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.

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