TOTAL VOLUME:
$154.7b
24H VOL:
$279,496,801
24H TRANSACTIONS:
2,984,640,614
OPEN INTEREST:
$1,923,931,766
416,910
Markets across
40,107
events
MATCHED EVENTS:
4,571
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 23, 4:00 PM EST
Kalshi
These markets track whether the S&P 500 index will surpass specific thresholds by the close of trading on October 23, 2026. Each market corresponds to a different target level, with outcomes determined solely by the index's final value at that specific date and time.
All markets resolve based on the end-of-day S&P 500 index value on October 23, 2026, at 4pm EDT. A 'Yes' outcome occurs if the index closes above the specified threshold for each respective market. Markets close on October 23, 2026, and expiration occurs at the sooner of the first official data release or one week after the close. The Exchange has applied modifications to the Source Agency and Underlying for index markets as detailed in the Kalshi Rulebook.