TOTAL VOLUME:
$154.4b
24H VOL:
$290,393,159
24H TRANSACTIONS:
2,984,640,614
OPEN INTEREST:
$1,944,100,805
420,493
Markets across
40,511
events
MATCHED EVENTS:
4,612
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 28, 4:00 PM EST
Kalshi
This market tracks the performance of a major stock market index on a specific date, allowing participants to speculate on whether the index will surpass certain thresholds by the end of trading that day.
All markets resolve based on the end-of-day value of the Nasdaq 100 index on October 28, 2026, at 4pm EDT. Each market has a unique threshold; if the index closes above the specified value (e.g., 27,200.00, 27,210.00, etc.), that market resolves to 'Yes.' Markets close on October 28, 2026, and expiration occurs at the sooner of the official index value release or one week after the close. The Exchange has standardized data sources and underlying definitions for all index markets, as noted in the Kalshi Rulebook.