Calendar  Volatility Report 4/22/2010  Volatility Report 4/23/2010  Volatility Report 4/26/2010  
Markwest Energy Partners LP (MWE) is at an implied volatility extreme low of 14.84% that is less than 100.00% of past values prior to 4/23/2010 (Close Price 31.80). On prior close, 4/22/2010, the implied volatility was 28.89% and at the 38.59 percentile. Closing price was 31.75.

Today's News on Markwest Energy Partners LP

MARKWEST ENERGY PARTNERS L P Files SEC form 8-K, Regulation FD Disclosure, Financial Statements and Exhibits

MARKWEST ENERGY PARTNERS L P Files SEC form 8-K, Other Events, Regulation FD Disclosure, Financial Statements and Exh

MarkWest Energy Partners, L.P. (MWE): Zacks Rank Buy

Antero Resources Proved Reserves Increase 55% to 5.0 Tcfe
[PR Newswire] - DENVER, Feb. 2, 2012 /PRNewswire/ -- Antero Resources announced today that its proved reserves at December 31, 2011 increased 55% to 5.0 Tcfe. Proved, probable and possible reserves (3P) increased by ...

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Tuesday, Feb 7, 2012