Holtzbrinck Publishing Group is a family-owned German holding company with broad interests in research communication (Springer Nature), educational course systems (Macmillan Learning), consumer books (Macmillan Publishers) and technology (Digital Science, HV Capital). Subsidiaries include ZEIT Group, Nature Publishing Group, Palgrave, Scientific American, St. Martin’s Press, Farrar, Straus and Giroux, Tor Publishing Group, Pan Macmillan, Fischer Verlage, Rowohlt Verlag, and fund activities (GSV, Founders Factory, Rethink Education). It has ownership and stakes in start-ups under Digital Science (Dimensions, Overleaf, Altmetric, Writefull), Macmillan Learning (Achieve, iClicker), Holtzbrinck Digital (Amboss, lecturio) and the ZEIT Group (ZEIT ONLINE, academics, StudioZX).