Energy Transfer Partners, L.P., Ten Percent Owner at Sunoco, holds 6.30M shares in Penntex Midstream Partners (Ticker: PTXP), holds 59.84M shares in Sunoco (Ticker: SUN), holds 4.37M shares in Amerigas Partners LP (Ticker: APU). Most recently, Energy Transfer Partners, L.P. Bought ― shares of Penntex Midstream Partners on Mar 10, 2017 for an estimated value of 6.44M.