Market breadth
How many stocks take part in a move, rather than how far the index moved.
How to read it
An index rising on a handful of large stocks while most fall is a narrow, fragile advance; broad participation is a healthier one. On the Market, % advancing reads Broad advance from 65%, Positive from 55%, Mixed above 45%, Negative above 35%, and Broad decline below.
How to use it
Confirms or questions an index move: a rally with weak breadth is carried by a few large stocks.
In Kereon
Market. Counted across the Market desk's own list of liquid stocks — ETFs, indexes and futures left out — not every listed issue.
Also called: breadth, market breadth, % advancing, % adv.