Barron’s wades through ten very high-priced S&P 500 stocks, finding three that might be winners while the rest should be avoided.

Barron’s looked at companies’ with P/E multiples based on 2010 estimates above 20, and removed sectors, like energy, facing a cyclical profit trough. It then determined value by looking at book value, free cash flow and the balance sheet. Here are the three stocks that were rated positively and the seven to avoid:

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