The Zweig Breadth Thrust (ZBT) is a variant of the IBD Follow-Through day pattern, but on steroids. Steven Achelis at Metastock explained the indicator this way [emphasis added]:
A "Breadth Thrust" occurs when, during a 10-day period, the Breadth Thrust indicator rises from below 40% to above 61.5%. A "Thrust" indicates that the stock market has rapidly changed from an oversold condition to one of strength, but has not yet become overbought.

According to Dr. Zweig, there have only been fourteen Breadth Thrusts since 1945. The average gain following these fourteen Thrusts was 24.6% in an average time-frame of eleven months. Dr. Zweig also points out that most bull markets begin with a Breadth Thrust.
Monday's strong NYSE breadth has pushed the ZBT Indicator into buy signal territory. Call this a "what's the limit on my credit card" buy signal for investors, though not necessarily traders.



Here is how the market has behave after ZBT buy signals. The full post can be found at our new site here.



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