Serving our clients and community for thirty years

We invest with intention to serve a greater good.

Arnerich Massena was founded in 1991 in Portland, Oregon. Since then, our independent firm has worked to be a model of corporate citizenship, from our unparalleled client service to our uncommon investment approach to our award-winning I AM Learning Partnership program. Focused on client service and intentional investing, we create portfolios that reflect the top-tier research and collaborative expertise we have cultivated over three decades working with private clients, foundations and endowments, and corporations.

Arnerich Massena has been a pioneer in the investment industry, bringing innovation and a forward-looking approach to investment research and portfolio construction. Since 1991, Arnerich Massena has researched, built, and successfully implemented alternative investment strategies, building specialized expertise in private markets investing. In 1995, we began positioning portfolios to capture the global market opportunity. Arnerich Massena began researching sustainable investing in 2007 and was a frontrunner in establishing a multi-asset class funding strategy focused on impact investment themes, and continues to be a thought leader in this space. Also an early adopter of frontier market investing, we continue to bring vision and innovation to our clients as we move forward in a constantly evolving investment landscape.

In 2017, Arnerich Massena transitioned to a 100% employee-owned structure via a management buyout, and a group of senior employees, including co-founder and long-term CEO Tony Arnerich, share equity ownership of the firm. In 2018, Arnerich Massena was listed among the top 20 largest women-owned firms by The Portland Business Journal, and it is a source of pride that the firm's ownership, leadership, and advisory team continue to be evenly balanced between men and women. Our structure carries forth our legacy and ensures that the firm will continue to serve clients with independence, integrity, and innovation.

Community outreach is fundamental to our philosophy and vision. Since 1995, Arnerich Massena has partnered with a local elementary school to provide literacy and enrichment programs for students. The award-winning I AM Learning Partnership program exemplifies the potential of business in partnership with community.


Winning awards is not our primary driver. We go the extra mile for families and organizations who trust us with their partnership, and we’re honored and humbled to have been recognized by our community time after time.

Top Work Places 2019
The Oregonian
Top Registered Investment Advisor in U.S. 2014 & 2015
Registered Rep Magazine
Top Money Management Firms 2014-2019
Portland Business Journal
Top Three Financial Planners 2015-2018
Oregon Business Magazine
Top Ten Corporate Philanthropists 2014, 2015, 2017, 2018
The Portland Business Journal
Innovations in Philanthropy 2016
The Portland Business Journal
eVestment Acumen Award Finalist for research acumen in U.S. 2015
Invest in Others Charitable Champion 2019
Invest in Others Corporate Philanthropy Award finalist 2017