Zweig Breadth Thrust Posted on December 1, 2012 by pebblewriter Came close Friday, but didn’t happen. A ZBT requires a move from .40 to .60 in 10 sessions or less. Here’s a successful signal from Sep 2011: And, here’s where we ended up Friday — the 10th session from the .40 cross: Ditto for NYSE & DJIA too, BTW.