Betting against health care

Health care firms of all types helped fuel the biggest short-selling frenzy in the New York Stock Exchange's history, recently hitting a record 2.2 billion shares. While some analysts say this means nothing, the fact is that many investors are "shorting" the stock; in other words, they're betting against it. What appears as a lack of confidence may be nothing more than a simple quirk of Wall Street. Good, bad or indifferent, selling short is no tall tale.