Graham Holdings Company (formerly The Washington Post Company) is a diversified American conglomerate, best known for formerly owning the newspaper for which it was once named, The Washington Post, and Newsweek.Its holdings include the online magazine Slate, Graham Media Group (formerly Post-Newsweek Stations), a group of five large-market television stations, higher education company Kaplan, and Trove (formerly WaPo Labs)—the developers of a news reader app.