TOTAL VOLUME:
$154.7b
24H VOL:
$279,496,801
24H TRANSACTIONS:
2,984,640,614
OPEN INTEREST:
$1,923,931,766
416,910
Markets across
40,107
events
MATCHED EVENTS:
4,571
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 19, 12:00 PM EST
Kalshi
This market tracks the performance of a major stock market index on a specific date and time, allowing participants to speculate on whether the index will meet or exceed certain threshold values.
The market resolves based on the Nasdaq 100 index value at 12pm EDT on October 19, 2026. Each market has a unique threshold value; if the index closes above the specified threshold (e.g., above 27,899.99 for one market, above 31,859.99 for another), that market resolves to 'Yes.' All markets close on October 19, 2026, and expiration occurs at the sooner of the first official data release or one week after the close date. The Exchange has updated the data source and underlying rules for index markets as per the Kalshi Rulebook.