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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 »

Fourth Quarter 2015 GEOS Review - Clean Technology: Unloved and Underestimated

As 2015 comes to a close, we find ourselves asking an existential question: can one achieve competitive returns while investing in clean energy technologies that have the potential to substantially...

The Essex Exchange 4th Quarter 2015 -  A Year of Uncertainty

 2015 was a challenging year for many investors.  Although the broader US markets closed the year largely unchanged, the placidness suggested by the flat returns of the broad indices belies...

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...