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Warren Buffett recently donated $6 billion worth of his company's stock to five philanthropic foundations, his biggest annual donation in nearly 20 years, according to Forbes. Since 2006, when Buffett committed to gradually giving away all of his Berkshire Hathaway stock,

Billionaire investor Warren Buffett dished out $6 billion in Berkshire Hathaway shares to five charities Saturday, marking his biggest annual donation in nearly 20 years and parting with a portion of his $152 billion estimated net worth.