Founded in 2009 by Marc Andreessen and Ben Horowitz, Andreessen Horowitz (known as "a16z") is a venture capital firm in Silicon Valley, California that backs bold entrepreneurs building the future through technology. They are stage agnostic: They invest in seed to late-stage companies, and both consumer and enterprise technology companies. To date, a16z has raised $7.1B, across seven funds, including the $650M Bio funds.