Polymarket (Global)
S&P 500 (SPX) Up or Down on October 9?
Up
Updated 13m ago · Settles Oct 9, 26
Polymarket (Global) YES
100¢
Bid 99¢ · Ask 100¢
Pricedger fair probability
99%
Deterministic model estimate
Potential edge
0.0 pts
On NO after fees · low confidence
Volume
33,734
Fine-print risk
12/100
Resolution-rule audit
Resolution rules — summary
This market will resolve to "Up" if the official S&P 500 Index closing price for S&P 500 (SPX) on Friday, October 9, 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, October 9, 2026 is lower than the official S&P 500 Index closing price for SPX on the m…
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