trade timing signals - using Advance-Decline line tools

[rimshot]

NASARAVI - your review is accurate and thorough for the NDX.

good work!
Am happy you find value in the Advance-Decline tools.

fyi - I do also follow the 15,2 BB and %B and BandWidth for
both the daily and the weekly charts for each index.

This week ended July 27, 2018 reveals why I do this:

the first or second tag or upside violation in July of the daily 15,2 %B
resulted in a minor pullback to date for index chart
#'s 100.2 through 103 -

https://stockcharts.com/public/1442871/tenpp/2

see chart #106.3 for the QQQ weekly, which this week tagged the
weekly 15,2 upper BB for the first time since March 2018
and immediately reversed with a minor pullback to date ...
note that pullbacks are common at upper BB tags,
and do not necessarily signify a lasting decline is initiating