trade timing signals - using Advance-Decline line tools

[rimshot]

$SPX $OEX $MID $INDU and $NYA cumulative Advance-Decline lines print new record highs Wednesday August 12, 2020 --
which represents a common characteristic of bull markets having potential upward Staying Power

* the NYSE "common stocks only" data set failed to closely approach its prior A-D line record high

$SPX cumulative A-D line shown with daily internals for the S&P 500 index as well -

http://stockcharts.com/c-sc/sc?s=%21NETADSPX&p=D&yr=1&mn=4&dy=0&i=p37198349571&a=422175840&r=1596930825001