SPX500 (SPX500) Open Interest
Total SPX500 futures open interest with a 30-day trend and per-exchange split.
$65.31M
Open Interest
USD notional, all venues
-13.15%
30-Day Change
vs $75.20M
2
Exchanges
with live SPX500 futures OI
Largest Venue
97.5% share
SPX500 Open Interest — Last 30 Days
Hourly total USD notional across all tracked exchanges
Rising open interest with rising price signals new money entering SPX500 longs; falling OI signals positions being closed.
SPX500 Open Interest by Exchange
Latest hourly snapshot · USD notional and market share