HollyFrontier: A Buyout Target for Tesoro Corporation? Zacks 40 mins ago ETF’s with exposure to HollyFrontier Corp. : September 25, 2015 Capital Cube q 2 days 22 hrs ago Independent refiner and marketer of petroleum products Tesoro Corporation TSO is rumored to have renewed its interest in smaller rival HollyFrontier Corporation HFC, per a report by Reuters on Friday. Shares of Tesoro gained about 1%, while HollyFrontier shares increased over 3%. The HollyFrontier stock also saw a surge in trading volume on the day. 6,414,134 shares exchanged hands compared with the three-month average of 3,326,180. This increase in stock activity is reportedly attributable to the rumor. In the first quarter of this year, Tesoro... More