Walnut Creek, CA Office

Ashley Duffey is a CFA® charterholder and holds a Series 65 license, with six years of industry experience. She is currently with Concentric in Walnut Creek, CA, where she has worked since 2024. Prior to joining Concentric, she was with LAB Quantitative Strategies and Personal Capital Advisors Corporation. Concentric provides discretionary sub-advisory portfolio management and model portfolio construction primarily to other registered investment advisers and financial institutions, utilizing quantitative optimization and multi-factor risk models alongside qualitative oversight to customize investment solutions.

Elena Gorskaya is a CFA® charterholder with six years of industry experience. She is currently an advisor at Concentric, where she has worked since 2022. Her prior experience includes roles at Advisor Partners, LLC and Echelon Asset Management. Concentric provides discretionary sub‑advisory portfolio management and model portfolio construction primarily to other registered investment advisers and financial institutions, utilizing quantitative optimization and multi‑factor risk models alongside qualitative oversight. The firm’s services emphasize specialized strategies and technological integration, including AI and tax‑aware approaches, with a business model centered on sub‑advisory relationships rather than direct retail clients.

Lindy Moss is a financial advisor at Concentric with a Series 65 credential and one year of industry experience. Her prior work includes roles at AdvisorAssist, Staples Inc., and Babson College. Concentric primarily serves other registered investment advisers and financial institutions as a sub-adviser and overlay manager, while also managing accounts for individual and high-net-worth clients. The firm uses a combination of quantitative and qualitative portfolio construction techniques and offers customized implementation tools such as tax-loss harvesting and ESG overlays.

Ralph Studley is a financial advisor at Concentric with 19 years of industry experience. He holds Series 63 and Series 66 licenses and has worked at firms including New York Life and Schroder Investment Management North America. Studley serves on the board of the Westfield State University Foundation, which supports the university through fundraising and community engagement. Concentric provides discretionary sub-advisory portfolio management and model portfolio construction primarily to other registered investment advisers and financial institutions, using quantitative portfolio-optimization software combined with qualitative oversight to tailor investment solutions. The firm is notable for delivering most services through sub-advisory relationships, focusing on servicing other RIAs rather than direct retail clients.

Eric Shulenberger is a Series 65-licensed financial advisor at Concentric with 18 years of prior experience at Veritable, LP and concurrent experience at Pathstone. He has worked in the industry for 11 years and is currently based in Walnut Creek, CA. Concentric provides discretionary sub-advisory portfolio management and model portfolio construction primarily to other registered investment advisers and financial institutions. The firm combines quantitative portfolio-optimization software and multi-factor risk models with qualitative oversight to customize portfolios, and offers specialized strategies including tax-aware and customizable mandates.

Adrian Colmenares is a financial advisor with Concentric in Walnut Creek, CA, holding a Series 65 designation and currently in his first year with the firm. He has prior experience with Parametric Portfolio Associates and Envestnet Financial Technologies. Concentric provides discretionary sub-advisory portfolio management and model portfolio construction primarily to other registered investment advisers and financial institutions. The firm combines quantitative portfolio-optimization software and multi-factor risk models with qualitative oversight to customize portfolios, offering specialized strategies including tax-loss harvesting overlays, ESG overlays, and customizable fixed-income mandates.

Rahul Agrawal is a financial advisor at Concentric with five years of industry experience. He holds Series 63 and Series 65 licenses and has worked at Concentric since 2022, following prior roles at Advisor Partners, LLC. Concentric primarily serves other registered investment advisers and financial institutions as a sub-adviser and overlay manager, while also managing accounts directly for individual and high-net-worth clients. The firm uses a combination of quantitative and qualitative portfolio construction techniques and offers customized implementation tools such as tax-loss harvesting, direct indexing, and ESG overlays.

Luke Hass is a financial advisor at Concentric with one year of industry experience. He holds a Series 65 designation and previously worked at Canterbury Consulting and California Pizza Kitchen. Concentric primarily serves other registered investment advisers and financial institutions as a sub-adviser and overlay manager, while also managing accounts for individual and high-net-worth clients. The firm uses a combination of quantitative and qualitative portfolio construction techniques and offers customized implementation tools, including tax-loss harvesting, direct indexing, and ESG overlays.

Bryan Lee is a financial advisor at Concentric with five years of industry experience. He holds a Series 65 designation and previously worked at Advisor Partners, LLC for four years. Concentric provides discretionary sub-advisory portfolio management and model portfolio construction primarily to other registered investment advisers and financial institutions, using quantitative portfolio-optimization software combined with qualitative oversight to customize accounts. The firm’s services include tax-loss harvesting, ESG overlays, and specialized strategies such as leveraged long/short tax-aware approaches, and it is known for servicing a high volume of clients through sub-advisory relationships.

Jia Xu is a financial advisor at Concentric with four years of industry experience. They hold a Series 65 designation and previously worked at Advisor Partners, LLC from 2016 to 2022 before joining Concentric. Concentric primarily serves other registered investment advisers and financial institutions as a sub-adviser and overlay manager, while also managing accounts directly for individual and high-net-worth clients. The firm uses a combination of quantitative and qualitative portfolio construction techniques and offers customized implementation tools, including tax-loss harvesting, direct indexing, and ESG overlays.