PolymarketCheck availabilityNo KYCVerified resolution dataWell calibratedSelected book midpoint
Down · —
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Stored reference
Down 52%
Down 52%Market quality
53 / 100
Medium quality24h Volume
$300
Liquidity
$1.9K
Low liquidityOpen interest
$249
Bid / Ask
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DownSpread
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Comments
0
Market data
Updated 12 minutes ago
Oct 22, 26, 12:00 PM UTCOct 23, 26, 8:00 PM UTC
Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
Venue terms
Source: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
- Minimum order (shares):
- 5
- Tick size:
- 1 percentage points
- Fees:
- Yes
Top holders
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Market depth · Down
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PolymarketRules
This market will resolve to "Up" if the Close price for S&P 500 (SPY) on October 23, 2026 is higher than the Close price for S&P 500 (SPY) on the most recent prior trading day.
- This market will resolve to "Down" if the Close price for S&P 500 (SPY) on October 23, 2026 is lower than the Close price for S&P 500 (SPY) 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 specified closing prices are exactly equal, this market will resolve 50-50.
- Closing prices will be used exactly as published by Pyth, without rounding.
- If S&P 500 (SPY) does not trade at all during the regular session, the market will resolve 50-50.