Volume is a rough measure of interest and liquidity. Rising volume during a price move can signal conviction; falling volume can signal a fading trend.
For long-term investors, day-to-day volume rarely matters. For traders and thin securities, it's a core input.
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Open Decision Lab →Frequently asked questions
Is high volume good or bad?
Neither by itself. High volume + rising price often means broad buying; high volume + falling price often means broad selling.