On October 21, 2026, WTI nominal open interest was approximately 18.19 million barrels, a decrease of 162,000 barrels from the previous day, marking the third consecutive day of reduction this week; Brent crude oil futures open interest was approximately 8.052 million barrels, an increase of 70,000 barrels from the previous day, marking the sixth consecutive trading day of increase. Click the link below to view complete open interest data and capture changes in funds beyond oil prices.