TOTAL VOLUME:
$134.2b
24H VOL:
$126,590,312
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,439,516,703
404,175
Markets across
30,277
events
MATCHED EVENTS:
2,685
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 17, 2:00 PM EST
Kalshi
This set of markets tracks the performance of a major stock market index at a specific future date and time. Each market has a different threshold, allowing participants to speculate on whether the index will reach or exceed various levels by the specified moment.
All markets in this event resolve based on the S&P 500 index value at 2pm EDT on August 17, 2026. Each individual market has a unique threshold value; if the index closes above that threshold at the specified time, the market resolves to Yes, otherwise No. All markets close on August 17, 2026, and expire either when the index value is first officially released or one week after the close date, whichever comes first. The Exchange has applied specific modifications to the source agency and underlying assets for index-related markets as per the Kalshi Rulebook.