DCP Midstream Partners, LP $542,012 Duke Energy Corp $8,232,169 Matrix Service Co $818,771 ONEOK Inc $160,870 Highpoint Resources Corp $9,441 DCP Midstream Partners, LP $542,012 Duke Energy Corp $8,232,169 Matrix Service Co $818,771 ONEOK Inc $160,870 Highpoint Resources Corp $9,441