DCP Midstream Partners, LP $542,012 Duke Energy Corp $8,242,515 Matrix Service Co $872,200 ONEOK Inc $159,570 Highpoint Resources Corp $9,441 DCP Midstream Partners, LP $542,012 Duke Energy Corp $8,242,515 Matrix Service Co $872,200 ONEOK Inc $159,570 Highpoint Resources Corp $9,441