Open interest (OI) is the total number of derivative contracts currently open — a measure of how much money is in the market. Rising OI with rising price means new money is entering and a move is real; rising OI with falling price means new shorts are piling in; falling OI usually means positions are closing and a move is ending.
This term belongs to Market data & derivatives. See how it fits the bigger picture in Foundation, part of the free DEGEN ACADEMY — or watch it play out on the live terminal.
FAQ
What is Open interest?
Open interest (OI) is the total number of derivative contracts currently open — a measure of how much money is in the market. Rising OI with rising price means new money is entering and a move is real; rising OI with falling price means new shorts are piling in; falling OI usually means positions are closing and a move is ending.