TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 17, 11:00 AM EST
Kalshi
This set of markets focuses on predicting the performance of a major stock market index at a specific future date and time. Each market has a different threshold value, allowing participants to speculate on whether the index will reach or exceed various levels by the specified moment.
All markets resolve based on the S&P 500 index value at 11am EDT on August 17, 2026. For each market, if the index value at that exact time is above the specified threshold (e.g., 7624.9999, 7630.9999, etc.), the market resolves to Yes; otherwise, it resolves to No. Markets close on August 17, 2026, and expiration occurs at the sooner of the first official data release or one week after the close date. The Exchange has applied modifications to the Source Agency and Underlying for index markets as per the Kalshi Rulebook.