TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 24, 3:00 PM EST
Kalshi
These markets track whether the S&P 500 index will surpass specific thresholds by a set date, allowing participants to speculate on future market performance without directly investing in stocks.
Each market resolves based on whether the S&P 500 index value at 3pm EDT on August 24, 2026, exceeds a specified threshold. All markets close on August 24, 2026, and expire either upon the first official release of the index data or one week after the close date, whichever occurs first. The Exchange has implemented modifications to the Source Agency and Underlying for index markets as outlined in the Kalshi Rulebook.