MarkWest Energy Partners (MWE) -4.7% premarket upon launching a public offering of 6M common...

|About: MarkWest Energy Partners, L.P. (MWE)|By:, SA News Editor

MarkWest Energy Partners (MWE) -4.7% premarket upon launching a public offering of 6M common units on the heels of completing a $750M debt offering. The company says it will use net proceeds mostly to buy additional common units to fund its capital spending program.