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. We were early investors in companies such as Cascade, Vignette, StorageNetworks, Internet Security Systems, Tradex... CEOs of Sigma portfolio companies speak highly of how we leverage our network, our experience and our creativity. Our team also invests meaningful personal funds alongside the main fund, giving a sense of our active, long-term commitment to our portfolio companies.