Ben Horowitz is an American entrepreneur, investor, and author, as well as a leading IT entrepreneur, and co-founder of Andersen Horowitz, which invests in private companies. Horowitz was born on June 13, 1966, in London, England, and raised in Berkeley, California, USA. Horowitz co-founded the software company Obsauer, and served as CEO, until it was acquired by Hewlett-Packard for $1.6 billion in July 2007.