in varying industries would qualify as prudent behavior. At least, that’s the view I take with my investment portfolio. The more confidence I have in each one of my stock picks, the fewer companies I need to own in my portfolio to feel comfortable. Most investors view stocks and the construction of stock portfolios differently, however. Somehow, when ownership interests are divided into shares that bounce around with Mr. Market’s moods, individuals and professionals start to think about and measure risk in strange ways. When short-term thinking and overly complicated statistics get involved,
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