 DALLAS--BUSINESS WIRE--HollyFrontier Corporation NYSE:HFC HollyFrontier or the Company today reported second quarter net income attributable to HollyFrontier stockholders of 168.9 million, or 1.03 per diluted share, for the quarter ended June 30, 2021, compared to a net loss of 176.7 million, or 1.09 per diluted share, for the quarter ended June 30, 2020. The second quarter results reflect special items that collectively increased net income by a total of 25.8 million. On a p 