But first the facts. There was a correction in the markets this week, and the sell-off triggered the Hindenburg conditions. The Hindenburg Omen occurs when an unusually high number of companies in the New York Stock Exchange reach 52-week highs and lows at the same time. The proportion of NYSE stock highs and lows must both exceed 2.2% of the total listed on the exchange. The Hindenburg Omen last occurred in October 2008, according to UBS data.
http://www.thestreet.com/story/10835851/1/hindenburg-omen-is-a-stock-market-crash-imminent.html