O Shaughnessy Asset Management LLC grew its position in Diamondback Energy, Inc. (NASDAQ:FANG – Free Report) by 3.8% during the 2nd quarter, HoldingsChannel reports. The fund owned 6,474 shares of the oil and natural gas company’s stock after purchasing an additional 238 shares during the period. O Shaughnessy Asset Management LLC’s holdings in Diamondback Energy […]