TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 24, 10:00 AM EST
Kalshi
These markets track whether the S&P 500 index will surpass various threshold values at a specific future date and time. Each market has a different threshold, allowing participants to speculate on the exact level of the index at that moment. The outcomes are determined solely by the index's value at the specified time.
All markets resolve based on the S&P 500 index value at 10am EDT on August 24, 2026. Each market has a unique threshold; if the index value exceeds the specified threshold (e.g., 7474.9999 for the first market, 7479.9999 for the second, etc.), that market resolves to 'Yes.' Markets close on August 24, 2026, and expiration occurs at the sooner of the first data release or one week after the close date. The Exchange has modified the Source Agency and Underlying for indices markets per the Kalshi Rulebook, but these modifications do not alter the core resolution mechanism described above. All markets share identical secondary rules regarding closure and expiration timing.