Breadth Thrust (Zweig + Whaley + Coppock)

The once-every-4-7-years institutional buy signal. Zweig Thrust: 10-day EMA of advancing-issue ratio crosses from below 0.40 to above 0.615 within 10 sessions. Since 1945: 11 historical firings, 11 produced positive 12-month returns averaging roughly +24%. Plus Whaley January barometer + Coppock Curve as supporting signals.