The Oakmark Funds are advised by Harris Associates L.P. an autonomous subsidiary of Natixis Investment Managers, L.P.
Learn more about the principles and philosophy behind our funds at HarrisAssoc.com.
Partner and Portfolio Manager
Robert Bierig has been a manager of the Oakmark Fund and the Oakmark Select Fund since 2022 and the Oakmark U.S. Large Cap ETF since 2024. He is also a portfolio manager and U.S. investment analyst at Harris Associates as well as a vice president of the Oakmark Funds.
He joined Harris Associates in 2012 after serving as managing principal at Amethyst Capital, managing director at GEICO Investments, investor at Frist Capital, investment analyst at ESL Investments and investment banking analyst at Morgan Stanley.
Mr. Bierig earned a B.A. in economics from Duke University (2000).
Insights
January 21, 2026
Robert Bierig highlights how recent market strength has been driven by a small group of high-momentum stocks, creating unique challenges - and opportunities -...
Insights
October 15, 2025
Today’s S&P 500 is increasingly concentrated. Robert Bierig highlights how the Russell 1000 Value offers diversification—and why value stocks may be a compelling option...
Insights
March 23, 2025
Portfolio manager Bobby Bierig discusses our value investing philosophy and recently launched Oakmark U.S. Large Cap ETF (OAKM) on First Look ETF.
At Oakmark, we don’t have an opinion about how equities will perform this year, if a recession will start or if the political parties will produce pro-growth candidates during the next election cycle. As long-term investors, we don’t think it matters.
Commentary
Oakmark Fund: Fourth Quarter 2025
December 31, 2025
At the sector level, the largest contributors to performance were communication services and health care, while energy was the only detractor.
Oakmark Select Fund: Fourth Quarter 2025
December 31, 2025
At the sector level, the largest contributors to performance were communication services and financials, while industrials was the only detractor.
Oakmark Fund: Third Calendar Quarter 2025
September 30, 2025
At the sector level, the largest contributors to performance were financials and energy, while health care and consumer staples were the largest detractors.