Is OBV useful for day trading?

OBV has limited usefulness for day trading because it's calculated at market close, making it typically not that useful for a day trader to identify buying and selling signals throughout the day.

OBV works better on daily or weekly charts since intraday moves often include noise and false signals.

If you use it intraday, apply OBV to confirm trend continuation or the authenticity of support and resistance breakouts, and pair it with price action since OBV is a directional tool that tells you where pressure is building but not when to act.