TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 25, 4:00 PM EST
Kalshi
These markets track whether the S&P 500 index will close above specific threshold values on a particular date, allowing participants to speculate on the performance of the broader market at that moment.
Each market resolves based on whether the end-of-day S&P 500 index value on September 25, 2026, exceeds a specified threshold. If the closing value is above the threshold (rounded down to the nearest whole number), the market resolves to Yes; otherwise, it resolves to No. All markets close on September 25, 2026, and expiration occurs at the sooner of the official data release or one week after the close date. The Exchange has applied modifications to the Source Agency and Underlying for index markets as per the Kalshi Rulebook.