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 31, 2:00 PM EST
Kalshi
This set of markets tracks potential future performance of a major stock market index at a specific date and time. Each market represents a different threshold value that the index might surpass, allowing participants to speculate on various levels of market performance.
All markets in this event resolve based on the S&P 500 index value at 2pm EDT on August 31, 2026. A market resolves to "Yes" if the index closes above the specified threshold (e.g., 7574.9999, 7575.0001, etc.) at that exact time. Each market operates independently with identical closing and expiration mechanics: markets close on August 31, 2026, and expire either when the index data is first released or one week after the close date, whichever comes first. The Exchange has applied specific modifications to the source agency and underlying assets for index-related markets as detailed in the Kalshi Rulebook.