Shamrock Capital, a Los Angeles-based investment firm, completed the acquisition of Adweek, a weekly American advertising trade publication, from Beringer Capital. Financial terms were not disclosed. "Adweek has been a critical source of information and insights for the marketing and advertising community for decades. Adweek’s experienced management team has done a tremendous job of building on its established brand, expanding its industry coverage and its product offering to further solidify its leading position in the marketplace. We look forward to working with Adweek to continue to drive strong growth, both organically and through acquisitions," Laura Held, Shamrock Capital Partner.