Current implied probability
Down 57%
Market quality
65 / 100
Medium quality24h Volume
$2.5K
Liquidity
$8.8K
Medium liquidityBid / Ask
42.0% / 43.0%
Spread
1.0 pt
Tight spreadComments
0
Market data
Updated 35 minutes ago
Sep 24, 26, 12:00 PM UTCSep 25, 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 official S&P 500 Index closing price for S&P 500 (SPX) on Friday, September 25, 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, September 25, 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.
- If the two specified closing 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.
Open markets
Exchange
KALSHIBTC price on Sep 24, 2026 at 6pm EDT?
- $84,200 or above99%
- $84,100 or above99%
- $84,000 or above99%
+97 more outcomes
- Total Vol
- $1.1M
- 24h Vol
- $1M
KALSHIBTC price on Sep 25, 2026 at 5pm EDT?
- $80,000 or above+5.0pt99%
- $79,000 or above+3.0pt99%
- $78,500 or above+2.0pt99%
+47 more outcomes
- Total Vol
POLYMARKETBitcoin above ___ on September 25?
- 70,000+0.4pt100%
- 72,000+0.4pt100%
- 74,000+0.6pt100%
+8 more outcomes
KALSHIHow high will BTC get in September?
+8 more outcomes
- Total Vol
- $3.1M
- 24h Vol
- $225.3K
POLYMARKETEthereum above ___ on September 25?
- 2,100+0.5pt100%
- 2,200+0.3pt100%
- 2,300+0.8pt100%
+8 more outcomes
KALSHIBitcoin price at the end of 2026
- 80,000 to 84,999.99+0.3pt11.8%
- 85,000 to 89,999.99+0.2pt10.8%
- 75,000 to 79,999.99+0.7pt10.8%
+25 more outcomes
- Total Vol
- ETH price on Sep 25, 2026 at 5pm EDT?
- Bitcoin above ___ on September 26?
- S&P 500 ETF (SPY) Up or Down - Daily
- Ethereum all time high by which date?
- Bitcoin price on September 25?
- Meta (META) Up or Down - Daily
- Bitcoin above ___ on September 27?
- How low will BTC get in September?
- Anthropic IPO by which date?
- Will Anthropic’s valuation hit __ by December 31?
- Bitcoin Up or Down on September 25?
Frequently asked questions
- What are the current odds for S&P 500 (SPX) Up or Down on September 25??
- Polymarket prices Down at 57% as of September 25, 2026.
- When does S&P 500 (SPX) Up or Down on September 25? resolve?
- S&P 500 (SPX) Up or Down on September 25? is scheduled to resolve on September 25, 2026.
- How is S&P 500 (SPX) Up or Down on September 25? settled?
- Polymarket settles this market as follows: This market will resolve to "Up" if the official S&P 500 Index closing price for S&P 500 (SPX) on Friday, September 25, 2026 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading day.