Definition
Open interest is a measure of market participation. Rising OI with rising price = new longs. Rising OI with falling price = new shorts. Falling OI = positions being closed.
Open interest (a.k.a. OI)
Total dollar value of all open positions on a contract.
Frequently asked questions
What is Open interest?
Open interest is a measure of market participation. Rising OI with rising price = new longs. Rising OI with falling price = new shorts. Falling OI = positions being closed.