The acronym ACH can represent several different entities depending on the context of the conversation. In finance and banking, it most commonly stands for Automated Clearing House, which is the electronic network used to process financial transactions, direct deposits, and business-to-business transfers across the United States. In corporate equities, ACH serves as the official New York Stock Exchange ticker symbol for Accendra Health, Inc. (formerly known as Owens & Minor), representing its public share listings.