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 26, 4:00 PM EST
Kalshi
These markets track whether the S&P 500 index will surpass specific thresholds by the close of trading on a set date. Each market has a unique target level, allowing participants to speculate on the index's performance relative to various benchmarks at that moment.
All markets resolve based on the end-of-day S&P 500 index value on August 26, 2026, with each market defining a distinct threshold for resolution. If the published closing value exceeds the specified threshold (e.g., 7499.9999 for the first market, 7504.9999 for the second, etc.), the market resolves to "Yes"; otherwise, it resolves to "No". All markets close on August 26, 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.