The market strongly favors S&P 500 (SPX) Opens Up or Down on June 18? at 99%. High confidence — but lower potential returns.
| # | Outcome | Probability | If Right | Volume |
|---|---|---|---|---|
| 1 | S&P 500 (SPX) Opens Up or Down on June 18? | 99% | +1% | $24K |
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This market will resolve to "Up" if the official S&P 500 Index open price for S&P 500 (SPX) on June 18 is higher than the official S&P 500 Index closing price for SPX on the most recent prior trading...
This prediction market tracks whether S&P 500 (SPX) Opens Up or Down on June 18? will occur, with $22K in total trading volume reflecting significant trader interest. Prediction markets aggregate the collective intelligence of participants who stake real money on outcomes, making them one of the most reliable forecasting tools available for events driven by available information and market participant behavior.
The market shows strong consensus: S&P 500 (SPX) Opens Up or Down on June 18? is priced at 99%, indicating traders overwhelmingly expect this outcome. At this probability level, the potential return on a correct bet is relatively low, but contrarian positions carry significant upside if the consensus proves wrong.
Trading activity is exceptionally high, with $22K traded in the last 24 hours alone (100% of total volume). This surge often indicates breaking news, a key deadline approaching, or a significant shift in market sentiment.
This market is scheduled to resolve by 2026-06-18. As the resolution date approaches, expect increased trading activity and tighter probability estimates. Historical data shows that prediction market accuracy improves significantly in the final days before resolution.
As of Jun 18, 2026 at 10:25 UTC, the leading outcome is S&P 500 (SPX) Opens Up or Down on June 18? at 99% probability, with $22K in total trading volume on Polymarket.
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