PolymarketCheck availabilityNo KYCVerified resolution dataWell calibratedCurrent implied probability
Down No observed price
Down No observed priceMarket quality
26 / 100
Low quality24h Volume
—
Liquidity
$733.5
Low liquidityBid / Ask
2.0% / 95.0%
Spread
93.0 pt
Wide spreadComments
0
Market data
Updated 31 minutes ago
Sep 30, 26, 12:01 PM UTCOct 1, 26, 8:00 PM UTC
Trends
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
Related Markets
Related questions for context, not a comparison of equivalent contracts.
Rules
This market will resolve to "Up" if the Close price for S&P 500 (SPY) on October 1, 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 1, 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.