Sigma Partners, a high technology venture capital firm with over a billion dollars under management, helps entrepreneurs transform ideas into substantial, profitable businesses. Our partners have experience as successful CEOs, entrepreneurs and technologists. With this deep operating and technical insight we help build teams and strategies that produce sustainable value and successful outcomes.

Newbury Ventures is a private venture capital partnership focusing on investments in communication and information technology companies throughout the world. We specialize in identifying opportunities for significant capital appreciation, by investing in promising entrepreneurial companies at early stages of their corporate development.

MedVenture Associates, founded in 1986, is a Venture Capital firm focused on seed and early stage investments in the field of medical technology, including medical devices, instrumentation and medical diagnostic technology. The firm's secondary investment focus is medical information technology, pharmaceutical and ...