S&P 1500 index daily chart with several BB settings: 100 and 50-day sma remain overhead, for now * bulls need the 21-day sma to hold as support during future declines, OR back toward the lower BB we go Note - the 13-day smoothing of the daily Advance-Decline percentage has held near or above its zero line for all of April 2018, so far http://stockcharts.com/c-sc/sc?s=%24SUPADP&p=D&yr=1&mn=6&dy=0&i=p14692223151&a=500918806&r=1524832435382