The company has received $242 million in series A, B, C, D and E funding from several prominent technology and health science companies, strategic angel investors and venture capital firms. Most recent financing was led by Fidelity Management & Research Company.  Other investors include Yuri Milner, Johnson & Johnson Development Corporation (NYSE: JNJ), MPM Capital, The Roche Venture Fund (Swiss: RO.SW ), Google Ventures (NASDAQ: GOOG),  New Enterprise Associates., Casdin Capital, WuXi Healthcare Ventures, Xfund, and Illumina (ILMN).