Harvest Natural Resources, Inc. (HNR) is at an implied volatility extreme high of 83.61% that is greater than 98.52% of past values prior to 4/28/2008 (Close Price 9.74). On prior close, 4/25/2008, the implied volatility was 55.95% and at the 72.59 percentile. Closing price was 9.93.

Today's News on Harvest Natural Resources, Inc.