January 7, 2007
More than $1.5 billion
Berkshire Hathaway Inc.**
Between $1 billion and $1.5 billion
Between $100 million and $1 billion
Archer Daniels Midland Co.
BP (formerly British Petroleum)
Canadian National Railway
Exxon Mobil Corp.
Merck & Co.
Schering Plough Corp.
Tyco International Ltd.
Waste Management Inc.
*May include stocks, bonds and other securities
**Warren E. Buffett committed his first installment of Berkshire Hathaway stock in June 2006.
Sources: Gates tax and SEC filings
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