Higher, But Cautious

Biotech stocks are climbing high, but Reuters' Deena Beasley writes that a nearly 50 percent increase in the last year has stoked worries about a bubble. She notes that the Nasdaq Biotech Index is up 45 percent as compared to last year and the Pharmaceutical Index is similarly up 32 percent, while during the same timeframe, the S&P 500 Index gained 25 percent.

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