Investor AB is a Swedish investment and holding company, often considered a de facto conglomerate. Founded in 1916 by the Wallenberg family, it serves as the investment arm of this prominent Swedish family. The company owns and manages stakes in several major Swedish and international companies, particularly in the fields of pharmaceuticals, telecommunications, and industry. Notable investments include companies such as Atlas Copco, Ericsson, SEB, and Saab. Investor AB is publicly traded on the Swedish stock exchange under the ticker INVE-B.