For what it's worth, here's a heads up on Nasdaq cumulative breadth ( $NAAD - Nasdaq Advancing-Declining Issues). Cumulative $NAAD (lime green line) is above the upper bollinger band. I've marked the prior times that happened (or where it touched the upper band) with vertical dotted lines to show where this lines up with $COMPQ price (cyan line). The heavy orange dotted lines show where this signaled a pullback. Three times the pullback was 400 to 500 points. One time (in Oct) the pullback was 950 points. The light orange line marks a minor pullback of ~250 points. The two blue vertical lines mark where no pullback occurred (April) or where a pullback was already underway and nearly complete (August)