Up/Down Volume
涨跌成交量
Sentiment & DerivativesP2Market BreadthApplies to: US stocks
Formula
Up-stock volume / down-stock volume; 9:1 days are called selling/buying climaxes
How to read it
Sustained heavy up-volume = institutions entering (Follow-Through Day); 90% down-volume = panic.
Outputvalue/series
Data source: NYSE/NASDAQ (IBD). Public knowledge, not investment advice.
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Related indicators
Reference metadata — public, well-known indicator definitions. Not investment advice.