OBV (누적거래량) (nujeok georaeryang)
On-balance volume (OBV)
Reviewed October 15, 2026
A running total that adds the day's volume when the price closes up and subtracts it when it closes down.
On-balance volume was introduced by Joseph Granville in 1963. A rising OBV line means more volume has traded on up days than on down days.
It is used to check whether volume supports a price trend.
Also called: OBV · on balance volume
General information only, not investment, legal or tax advice. Rules change: check the official sources linked here and your broker before you act.