Venrock partners with entrepreneurs who want to tackle big, hard problems that most think not possible. Venrock is a leading venture capital firm with offices in Palo Alto, CA; New York, NY; and Cambridge, MA. Originally established as the venture capital arm of the Rockefeller family, Venrock continues an eight-decade tradition of partnering with entrepreneurs to establish successful, enduring companies. With a primary focus on technology, healthcare, and energy, portfolio companies have included Adify, Adnexus Therapeutics, Apple Computer, Athenahealth, Centocor, Check Point Software, DoubleClick, Gilead Sciences, Idec Pharmaceuticals, Illumina, Intel, Millennium Pharmaceuticals, Sirna Therapeutics, StrataCom, and Vontu.