trade timing signals - using Advance-Decline line tools

[rimshot]

2010 article by Arthur Hill, CMT explaining the
key difference between an Advance-Decline line
vs. an Advance-Decline volume line:

stockcharts.com/articles/mailbag/2010/07/the-ad-line-versus-ad-volume-line.html


excerpt -

"The AD Line and AD Volume Line are both breadth indicators, but the AD Line favors small-mid caps and the AD Volume Line favors large-caps. Every day there are some 3000 stocks traded on the NYSE and 2700 stocks traded on the Nasdaq. The vast majority of these are small and mid-cap issues. Large-caps are the minority."