How they give back

The largest donations in U.S. history.

1 of 12

1. Warren Buffett

Year: 2006

Source of wealth: Berkshire Hathaway

Recipient : Bill and Melinda Gates Foundation

Amount: $30 billion *

*Donation to be made in Berkshire Hathaway shares over time, so final donation is contingent on share prices.

Source: Center on Philanthropy, Indiana University

Almanac of American Wealth

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The richest Americans

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Wealthy eccentrics

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