TOTAL VOLUME:
$134.2b
24H VOL:
$143,246,370
24H TRANSACTIONS:
2,403,290,006
OPEN INTEREST:
$1,452,035,386
405,032
Markets across
30,543
events
MATCHED EVENTS:
2,690
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 8, 10:00 AM EST
Kalshi
This event tracks the performance of a major stock market index at a specific future date and time, allowing participants to speculate on whether the index will reach certain threshold values by that moment. The outcome depends solely on the index's value at the exact specified timestamp.
All markets share the same event-level parameters: they resolve based on the S&P 500 index value at 10am EDT on September 8, 2026. Each market has a distinct threshold value; if the index closes above its respective threshold (specified as "value.9999" to indicate inclusive of the threshold), that market resolves to Yes. All markets close on September 08, 2026, and expire at the sooner of the first official data release or one week after the specified date. The Exchange has applied specific modifications to the source agency and underlying for index markets as detailed in the Kalshi Rulebook.