TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 17, 4:00 PM EST
Kalshi
These markets assess whether the S&P 500 index will surpass specific thresholds by the close of trading on September 17, 2026. Each threshold represents a progressively higher value, allowing traders to speculate on the magnitude of potential gains in the index.
All markets share a common resolution framework: each resolves to 'Yes' if the closing S&P 500 index value on September 17, 2026 exceeds its specified threshold (e.g., 7424.9999, 7429.9999, etc.). Markets close on the resolution date, and expiration occurs either upon data release or one week later, whichever comes first. The Exchange has standardized the source agency and underlying rules for all index-based markets as per the Kalshi Rulebook, ensuring consistent data sourcing and market definitions across all thresholds.