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 17, 4:00 PM EST
Kalshi
This set of markets tracks the performance of a major stock market index at a specific future date and time. Each market represents a different threshold value that the index must exceed for the outcome to be considered successful. These markets allow participants to speculate on or hedge against potential future movements in the index.
All markets resolve based on the S&P 500 index value at 4pm EDT on August 17, 2026. Each individual market has a specific threshold value; if the index closes above that precise threshold (e.g., 7624.9999 or higher) at the specified time, the market resolves to 'Yes'. If the index does not meet or exceed the threshold, the market resolves to 'No'. All markets close on August 17, 2026, and expiration occurs at the sooner of the first 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.