No clear favorite. SPY (SPY) Up or Down on May 18? leads at just 8%. Many possible outcomes.
| # | Outcome | Probability | If Right | Volume |
|---|---|---|---|---|
| 1 | SPY (SPY) Up or Down on May 18? | 8% | +1083% | $289K |
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This market will resolve to "Up" if the Close price for S&P 500 (SPY) on May 18, 2026 is higher than the Close price for S&P 500 (SPY) on the most recent prior trading day. This market will resolve t...
As of May 18, 2026 at 20:05 UTC, the leading outcome is SPY (SPY) Up or Down on May 18? at 8% probability, with $288K in total trading volume on Polymarket.
The total trading volume for this market is $288K, with $288K traded in the last 24 hours. This represents real money at stake from prediction market traders on Polymarket.
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