Will S&P 500 (SPX) Open Up or Down on October 1 2026?
This market will resolve to "Up" if the official S&P 500 Index open price for S&P 500 (SPX) on October 1 is higher than the official S&P 500…
Closed marketArchived market
S&P 500 (SPX) Opens Up or Down on October 1?
S&P 500 (SPX) Opens Up or Down on October 1?
Primary signalUp
Probability100.0%
ResolutionOct 1, 2026
ResolutionOct 1, 2026
Signal board
Source on PolymarketPrice, depth and useful dates
An editorial view of the signal: what leads, how much activity is behind it, and which date carries the risk.
Archived marketUpUp
Total volume$296.3KAll-time traded activity
24 hour volume$295.8KRecent market attention
Liquidity$28.9KDepth available around prices
Open interest$255.8KCapital still exposed
ResolutionOct 1, 2026Next active phase close
Price convictionStrongLeader is priced with very high conviction.
Active scenarios
Open phases onlyArchived market
100.0%
0.1%
Editorial analysisCurrent situation and market structure
S&P 500 SPX open close October 1 2026 September 30 2026
Wall Street Journal historical prices SPX October 1 2026
Editorial market brief.
This analysis is provided for informational and editorial purposes only. Market signal prices reflect market-implied expectations, not verified outcomes or recommendations. Markets can be illiquid, volatile, and subject to ambiguous resolution criteria.
This analysis is provided for informational and editorial purposes only. Market signal prices reflect market-implied expectations, not verified outcomes or recommendations. Markets can be illiquid, volatile, and subject to ambiguous resolution criteria.