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 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. We are based in Boston, Massachusetts and also have an office in Evanston, Illinois.

 Since our founding by Joe McNay in 1976, we have remained firmly committed to a consistent investment philosophy. Despite changing market conditions, we remain focused on adding value to our clients’ investment portfolios through growth stock investing, a strong commitment to compliance and superior client service. Our ultimate mission is to provide our clients with long-term investment returns consistently above their respective benchmarks along with service that surpasses their expectations.

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Essex Insights See All »

The Essex Exchange 3rd Quarter 2015 - Where Do We Go From Here

As we exit a tumultuous third quarter, investors are again questioning  both the strength of the US economy and the outlook for the equity markets going forward.   The markets have...

Third Quarter 2015 GEOS Update - Fahrvergnügen

We believe the Essex Global Environmental Opportunities Strategy (GEOS) investment philosophy to be quite differentiated: Companies with technologies that increase the efficient use of scarce...

Re-Defining the Energy Sector

The world is facing an energy paradox: countries need enormous amounts of energy to support economic growth, even as this growth threatens the health of their people and planet. Addressing this...