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

Harris Associates

111 South Wacker Drive, Suite 4600
Chicago, Illinois 60606

Jason Long portrait

Jason E. Long, CFA

Partner and Portfolio Manager

Jason Long has been a manager of the Oakmark Global Fund since 2016. He is also an investment analyst on the international research team and a vice president of the Oakmark Funds.

He rejoined Harris in 2011 after having previously worked at the firm as an international investment analyst from 2004 to 2006. In addition, he served as a senior research analyst at Security Global Investors, partner at Capital Partners and senior research associate at Brandes Investment Partners.

Mr. Long earned a B.A. degree in finance and international economics from San Diego State University (1999).

Funds under management


Oakmark Global Fund: First Calendar Quarter 2024

March 31, 2024

A German bus and truck manufacturer was a top contributor to the Fund’s performance during the quarter, while a wealth manager based in the U.K. was a top detractor.

Oakmark Global Fund: Fourth Calendar Quarter 2023

December 31, 2023

The top contributor to the Fund’s performance was a company that specializes in consumer finance, while a top detractor was a life science company with pharmaceuticals, consumer health and crop science divisions.

Oakmark Global Fund: Third Quarter 2023 and Fiscal Year-End

September 30, 2023

A U.S. telecommunications and mass media company was a top contributor for the quarter, while the largest wealth manager in the U.K. was a top detractor.

News + Insights

Picture of coins and paper money


The Case for European Financials

March 24, 2020

The international team portfolio managers reflect on why we believe the Oakmark International Fund is positioned in strong banks in the European financials sector...

Looking up beside several skyscrapers


Oakmark Global 20th Anniversary Retrospective

August 12, 2019

Portfolio Manager Clyde McGregor commemorates the 20th anniversary of Oakmark Global by reflecting on the Fund’s history from inception onward.

We do value investing differently

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.