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Harris Associates

John Sitarz, CFA, CPA

Partner, Portfolio Manager and U.S. Investment Analyst

Harris | Oakmark

John Sitarz has been a manager for the Oakmark Global Fund and the Oakmark Global Select Fund since 2022, and the Oakmark Global Large Cap ETF since 2025. He is also an investment analyst at Harris Associates and a vice president of the Oakmark Funds.

He joined Harris Associates in 2013. During his time at the firm, he has served as a research associate and assistant. Prior to that he was an audit senior assistant at Deloitte & Touche.

Mr. Sitarz earned B.S. degrees in accounting and business administration from the University of Denver (2012).

Funds managed

Oakmark Global Fund

Ticker
OANGX
Concentrated, actively managed, flexible all-cap world stock fund.
Total net assets
$1.08 billion
as of 06/30/2026
Morningstar category
Global Large-Stock Value
View fund details

Oakmark Global Select Fund

Ticker
OANWX
Concentrated, actively managed high-conviction world stock fund.
Total net assets
$822.54 million
as of 06/30/2026
Morningstar category
Global Large-Stock Value
View fund details

Oakmark Global Large Cap ETF

Ticker
OAKG
Focused, global equity strategy that invests primarily in large-cap U.S. and non-U.S. companies. This actively managed ETF maintains approximately 30–60 stocks aimed at providing diversification and delivering performance distinct from the broad market over time.
Total net assets
$38.01 million
as of 10/08/2026
Morningstar category
Global Large-Stock Value
View fund details

Harris | Oakmark

A consistent approach to value investing.
Learn more

CFA® and Chartered Financial Analyst® are registered trademarks owned by the CFA Institute.

Investing involves risk, including the risk of loss. Before investing, consider the fund's investment objectives, risks, charges, and expenses. Visit im.natixis.com for a prospectus or a summary prospectus containing this and other information. Read it carefully.

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