Arnoldo Mondadori Editore S.p.A. is Italy's largest publishing company, specializing in books, magazines, and digital content. Founded in 1907 by Arnoldo Mondadori in Ostiglia and relocated to Milan in 1919, it pioneered iconic series like Gialli Mondadori, the first Italian detective novel collection in 1929, and introduced genres such as science fiction with Urania novels and children's Disney comics. The company encompasses prestigious imprints including Mondadori, Giulio Einaudi Editore, Rizzoli Libri, Edizioni Piemme, and Mondadori Electa, covering fiction, non-fiction, education, art, and children's literature. It leads the Italian market with a 26.2% share in trade books, 21.7% in educational publishing, and 28.9% in magazine circulation as of 2019. Mondadori also operates retail chains, the online bookstore mondadoristore.it, and popular digital platforms like Giallo Zafferano. Controlled by Fininvest since 1991, it has expanded internationally, notably in digital e-books and licensing, solidifying its role as a cornerstone of Italy's media landscape.