"This second 9-to-1 up day adds greatly to the bullish significance of the first, according to Zweig. That's because a single 9-to-1 up day, by itself, has not always been a bullish event. Perhaps its biggest false signal came on March 16, 2000, at more or less the exact top of the market before the Internet bubble burst." http://www.marketwatch.com/news/sto...1B2-469D-81C4-5F47257C268E}&dist=MostReadHome