Stocks on the New York Stock Exchange on Thursday completed a Zweig Breadth Thrust, a rare indication of surging market breadth that, over the last 80 years, has been a reliable predictor of the stock market's direction.

Stocks on the New York Stock Exchange on Thursday completed a Zweig Breadth Thrust, a rare indication of surging market breadth that, over the last 80 years, has been a reliable predictor of the stock market's direction.