ATLANTA--(BUSINESS WIRE)--Holzer & Holzer, LLC is investigating whether certain statements issued by QLogic Corp. (“QLogic” or the “Company”) (Nasdaq: QLGC) regarding its business and operations complied with federal laws. On July 9, 2015, QLogic announced preliminary results for its first quarter ended June 28, 2015. QLogic said it expects to report net revenue of approximately $113 million for the first quarter of fiscal 2016, compared to the previously forecasted range of $124 million to