Jul 17, 2012 07:21AM Stocks with implied volatility movement; WLT CNX

May 31, 2012 09:41AM Walter Energy (WLT) volatility elevated as shares trade near 32-month lows

May 23, 2012 08:18AM Walter Energy (WLT) volatility elevated at 68 as shares approach three-year low

May 17, 2012 08:46AM Stocks with implied volatility movement; WLT MS

Jan 12, 2012 09:03AM Walter Energy (WLT) volatility elevated on sharp price movement

Nov 15, 2011 07:22AM Stocks with implied volatility movement; WLT ED

Oct 21, 2011 11:52AM Walter Energy (WLT) volatility elevated at 87 into Q3 results

Oct 14, 2011 11:40AM Walter Energy (WLT) option volume and volatility elevated as shares trend higher

Aug 11, 2011 07:27AM Stocks with implied volatility below IV index mean; WLT AKAM

Aug 10, 2011 07:20AM Stocks with implied volatility below IV index mean; WLT DNDN

Aug 8, 2011 07:10AM Stocks with implied volatility below IV index mean; V WLT

Apr 6, 2011 02:27PM Walter Energy (WLT) puts active as shares trend off of record highs

Mar 28, 2011 12:12PM Walter Energy (WLT) April volatility low on sharp two day rally

Nov 22, 2010 08:10AM Walter Energy (WLT) calls active on elevated December volatility