Co-Investors Altos Ventures works closely with an extensive network of top venture capital, institutional and corporate investors. Over the years, Altos has helped raise more than a billion dollars in follow on financings for its early stage portfolio companies. Co-Investor Network (Partial List)  Financial Investors  ABS Ventures  AIG Infrastructure Fund  Alta Partners  Apex Venture Partners  Athena Technology Ventures  August Capital  Austin Ventures  Bain Capital  Bay Partners  BA Venture Partners  Cardinal Venture Capital  Cargill Ventures  Champion Ventures  Charles River Ventures  Claremont Creek Ventures  ComVentures  Contrarian Group  Crosslink Capital  Crosspoint Venture Partners  Discovery Ventures  DCM  Draper Richards  Duff Ackerman & Goodrich  Garage Technology Ventures  Globespan Capital Partners  Granite Ventures  GRP Partners  Highland Capital  Hummer Winblad Venture Partners  Index Ventures  Integral Capital  Intel Ventures  Interwest Partners  Institutional Venture Partners (IVP)  JP Morgan  Kleiner Perkins Caufield & Byers  Lightspeed Venture Partners  Mayfield Fund  Menlo Ventures  New Enterprise Associates (NEA)  Oak Investment Partners  Pacifica Fund  Pacific Community Ventures  Partech International  Peninsula Equity Partners  Piper Jaffray  Proctor & Gamble  Red Rock Ventures  RWI Group  Saehan Ventures  Sierra Ventures  Sigma Partners  Sofinnova Ventures  Staenberg Ventures (Rustic Canyon)  Startup Capital Ventures  Summit Partners  Technology Crossover Ventures  Thomvest  Tong Yang Group  TPG Ventures  Tricon  Trinity Ventures  Walden VC  Corporate & Strategic  Adobe  AIG Infrastructure Fund (China)  American Express  American Greetings  BancBoston  Bertelsman/BMG  Bain Ventures  Booz Allen & Hamilton  C|Net  Capital/EMI  CIBC  Conexant  Dell  Digital Island  EMC  Gateway  Goldman Sachs  Hikari Tsushin (Japan)  Hyperion Partners  IBM  Imagine Media  Intel  JP Morgan Partners  Lehman Brothers  NIF Ventures (Japan)  Nortel  Piper Jaffray  Pulitzer  Quantum Technology Ventures  Samsung Electronics (Korea)  Siemens  Sony  Stanford University  STIC International  Sun Microsystems  Trans Cosmos (Japan)  Tribune  Tribune Ventures  Universal/Polygram  UOB Ventures (Singapore)  Warner Music  Yahoo!