CRV has been a leading investor in early-stage technology companies for almost half a century. The firm has backed nearly 400 startups in its 47-year history, including foundational companies like Twitter, Zendesk, Amgen, Hubspot, Parametric Technologies, Yammer, EqualLogic and Sonus Networks. Half of the companies CRV has backed have gone public or been acquired. The firm focuses on enterprise, consumer and deep insight bioengineering.