Labratory Corporation of America Holdings (LH) is at an implied volatility extreme low of 15.43% that is less than 99.20% of past values prior to 5/16/2008 (Close Price 75.93). On prior close, 5/15/2008, the implied volatility was 19.72% and at the 21.38 percentile. Closing price was 76.08.

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