Essex Investment Management Company, LLC is an SEC registered investment adviser that manages growth equity portfolios for institutional clients (including corporations, endowments, foundations, municipalities and public funds), high net worth clients, mutual funds (on a sub-advisory basis) and private partnerships. They are based in Boston, Massachusetts and also have an office in Evanston, Illinois. Since founding in 1976, they have remained firmly committed to a consistent investment philosophy. Their ultimate mission is to provide clients with long-term investment returns consistently above their respective benchmarks along with service that surpasses their expectations.