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: Sep 14, 4:00 PM EST
Kalshi
This set of markets allows participants to speculate on the exact closing value of the S&P 500 index on a specific future date. Each market corresponds to a specific numerical range, enabling traders to bet on where the index will fall within a spectrum of possible values at the end of trading on September 14, 2026.
All markets in this event resolve based on the end-of-day value of the S&P 500 index on September 14, 2026. Each market corresponds to a specific numerical range, and the market resolves to 'Yes' if the closing index value falls within that range. Markets close on September 14, 2026, and expiration occurs at the sooner of the first official release of the index data or one week after the closing date. The Exchange has modified the Source Agency and Underlying for indices markets per the Kalshi Rulebook, which may affect data sourcing and resolution procedures. All ranges are mutually exclusive and collectively exhaustive, ensuring that exactly one market will resolve to 'Yes' based on the actual closing value.