Berkshire Hathaway Inc.

Caterpillar Inc.

Microsoft Corporation

Waste Management, Inc.

Canadian National Railway Company

Bill Gates' fund <a href="https://www.sec.gov/Archives/edgar/data/1166559/000110465926016458/0001104659-26-016458-index.htm">made</a> only two changes to its portfolio last quarter: reducing stakes in Microsoft and Berkshire Hathaway, according to its report on Form 13F. The investor's strategy remains concentrated: the fund has shares of 23 companies under management, but more than 80% of its capital is allocated to just five issuers.