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Robeco Institutional Asset Management US Inc.

Robeco is an international asset manager offering an extensive range of active investments, from equities to bonds. Research lies at the heart of everything they do, with a ‘pioneering but cautious’ approach that has been in their DNA since the foundation in Rotterdam in 1929. Robeco has invested in emerging markets since the early beginnings of the company and has a fully-dedicated emerging markets team in place since 1994. Based on award-winning academic research and experienced investment teams, quantitative investing is one of the key strengths of Robeco. In addition to the existing factor-based quantitative stock selection strategies in global and emerging markets, Robeco in 2006 introduced Conservative Equities: their active approach to low volatility investing. It is based on the anomaly that low-risk stocks tend to deliver a higher risk-adjusted return than high-risk stocks, contrary to classical finance theories. An approach that tends to lead to a portfolio that offers stable equity returns and high income.

Funds Managed

Manager Profiles

portrait of Arlette van Ditshuizen

Arlette van Ditshuizen

Ms. Van Ditshuizen is a Portfolio Manager within the Conservative Equities team.  Since 2007 her primary focus is Robeco’s Low-volatility strategy called Conservative Equities. Previously she was Risk Manager with Robeco for two years and held a position as Senior Portfolio Manager and Head of Derivatives Structures with Robeco for six years.  Arlette started her career in 1997 at Robeco. She is a graduate of the Erasmus University Rotterdam and holds a Master's degree in Econometrics. She has 22 years of experience in the investment industry.

portrait of Arnoud Klep

Arnoud Klep

Mr. Klep is a Portfolio Manager within the Conservative Equities team. His primary responsibility is Robeco’s Low-Volatility strategy called Conservative Equities. One of his areas of expertise is the sustainability integration within the Quantitative Equities strategy. Previously, Arnoud was Head of Structured Investments with Robeco, managing various quantitative investment strategies. He started his career in the Robeco Quantitative Research department in 2001 after graduating from Tilburg University with a Master’s degree in Econometrics. 

portrait of Han van der Boon

Han van der Boon

Han van der Boon is Portfolio Manager within the Core Quant Equities team. He was a Technical Portfolio Manager and Operational Portfolio Manager with a focus on equities in the period 2009-2018. He joined Robeco in 1997 as a Business Controller. He holds a Master's in Business Administration from Erasmus University Rotterdam.

portrait of Jan Sytze Mosselaar, CFA

Jan Sytze Mosselaar, CFA

Mr. Mosselaar is a Portfolio Manager within the Conservative Equities team. His primary responsibility is Robeco’s Low-Volatility strategy called Conservative Equities. He started his career in 2004 at Robeco and worked for ten years as a Portfolio Manager in the Robeco Asset Allocation department, managing multi-asset allocation funds, quant allocation funds, and fiduciary pension mandates. He also was part of Robeco’s Asset Allocation Committee. Mr Mosselaar holds a Master’s degree in Business Economics with a specialization in Finance Investments from the University of Groningen. He is a CFA® charter holder.

portrait of Jan de Koning, CFA, CAIA, CIPM, CMT

Jan de Koning, CFA, CAIA, CIPM, CMT

Mr. De Koning is a Portfolio Manager within the Core Quant Equities team. He is responsible for managing Enhanced Indexing and Active Quant strategies. He started his investment career in 2005 with Centuria Capital and was a Portfolio Manager at Somerset Capital Partners. Before joining Robeco in January 2015 he worked as a fiduciary manager at NN Investment Partners.  Jan is a graduate from the University of Tilburg and holds a Master's degree in Organizational Studies and is the author of a book on quantitative investing which is translated into several languages. He is a CFA®, CAIA®, CIPM® and CMT charter holder.

portrait of Maarten Polfliet, CEFA

Maarten Polfliet, CEFA

Mr. Polfliet is a Portfolio Manager within the Conservative Equities team.  Until March 2017 his primary responsibilities included both Robeco’s Quant Value strategy and its Low-Volatility strategy called Conservative Equities. Since then, he is fully dedicated to the Conservative Equities strategy. Previously, Mr Polfliet was a Client Portfolio Manager within quantitative equities at Robeco. He started his career as a portfolio manager for private and institutional clients at SNS Bank Nederland in 1999.  From 2002 he worked at Bank Insinger de Beaufort as a portfolio manager for its Dutch Equity Fund, until he joined Robeco in 2005. Having obtained a Master’s degree in Financial Economics at Tilburg University, he was subsequently awarded his Master’s in Financial Analysis by the University of Amsterdam.  He is a CEFA charter holder, and has 20 years of experience in the investment industry.

portrait of Machiel Zwanenburg

Machiel Zwanenburg

Mr. Zwanenburg is a Portfolio Manager within the Core Quant Equities team.  He is responsible for managing Enhanced Indexing and Active Quant strategies, and specializes in portfolio management with sustainability integration.  Previously, he held the positions of Risk Manager at Robeco SAM, and Head of Client Portfolio Risk at Robeco. He joined Robeco in 1999 as a member of the Quantitative Research department. He holds a Master's degree in Econometrics from Erasmus University Rotterdam and a Master's degree in Economics from the London School of Economics and Political Science.

portrait of Pim van Vliet, Ph.D.

Pim van Vliet, Ph.D.

Mr. Van Vliet is the head of the Conservative Equities team, responsible for coordinating the research and portfolio management of the Conservative Equities strategies which he founded in 2006. He has also been responsible for the Quantitative Allocation strategies since 2016. Pim joined Robeco in 2005 as a Senior Quantitative Researcher with responsibility for asset allocation research. He specializes in downside risk and long term investment strategies. He has published in the Journal of Banking and Finance, Management Science, the Journal of Portfolio Management, and other academic journals, and has written a book on low volatility investing which has been translated into several languages.
Pim is a guest lecturer at several universities, and advocates quantitative investing at international seminars. He holds a Ph.D. and an M.Sc. (cum laude) in Financial and Business Economics from Erasmus University Rotterdam, and has 19 years of experience in the investment industry

portrait of Thijs van der Valk

Thijs van der Valk

Thijs van der Valk is a Portfolio Manager within the Core Quant Equities team. He joined Robeco in 2019, and is responsible for Enhanced Indexing and Active Quant portfolios and specializes in quantitative stock selection and portfolio construction. Thijs started his career in 2006 as a Quant Equities Researcher and Portfolio Manager at Transtrend, a systematic trend-following CTA, and like Robeco, part of the holding company ORIX Europe. In 2012 he became Head of Electronic Trading and was responsible for all electronic and algorithmic trading activities. He holds a Master's (cum laude) in Mathematical Physics from Radboud University Nijmegen, and a Master's in Econometrics from Erasmus University Rotterdam.

portrait of Tim Dröge

Tim Dröge

Mr. Dröge is a Portfolio Manager within the Core Quant Equities team. He is responsible for managing Enhanced Indexing and Active Quant strategies, and specializes in portfolio management in Emerging Markets. Previously, he held positions as Portfolio Manager for Balanced Investments and Account Manager for institutional clients. Mr. Dröge started his career at Robeco in 1999, and has been working as a Portfolio Manager since 2001. He holds a Master's degree in Business Economics from Erasmus University Rotterdam.

portrait of Wilma de Groot, Ph.D. CFA

Wilma de Groot, Ph.D. CFA

Mrs. De Groot is Head of Core Quant Equities and responsible for managing Enhanced Indexing and Active Quant strategies. She specializes in asset pricing anomalies and portfolio construction. Mrs. de Groot joined Robeco as a Researcher in 2001 and has been a Portfolio Manager since 2014. She has published in various academic publications including the Journal of Banking and Finance, Journal of International Money and Finance, Journal of Empirical Finance, and Financial Analysts Journal, and she is a guest lecturer at several universities. Mrs de Groot graduated in Econometrics from Tilburg University. She has a Ph.D. in Finance from Erasmus University Rotterdam and is a CFA® charter holder.

portrait of Yaowei Xu

Yaowei Xu

Ms. Xu is a Portfolio Manager within the Quant Equities team at Robeco. Her primary focus areas are Robeco’s Conservative and Core Quant emerging market and Chinese market strategies. She started her investment career in 2004 with ABN AMRO Asset Management in The Netherlands as Portfolio Risk Manager performing quantitative risk modelling and analysis for equity portfolios, and in 2006 she became Telecommunication and Utilities Analyst for Global Emerging Market Equity. In 2008 she joined Pelargos Capital BV in the Netherlands as Senior Portfolio Manager to co-manage the long/short hedge fund focusing on Asia Pacific ex Japan equities. She joined the Robeco Emerging Markets team in 2014 to focus on Greater China equities, and in March 2018, she joined the Robeco Quantitative Equities team. She holds a Master's degree in Financial Management from Nyenrode Business University, The Netherlands.

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