Warren Buffett told Berkshire Hathaway shareholders, in a Thanksgiving letter, he plans to "step up" charitable giving from his $150 billion estate.

Buffett, in a Thanksgiving letter, said he needs to accelerate the disbursement of his Berkshire stock to his three children's foundations.

The Berkshire Hathaway chairman will continue to share his trademark wit and wisdom with shareholders via annual Thanksgiving letters.

Warren Buffett told Berkshire Hathaway shareholders, in a Thanksgiving letter, he plans to "step up" charitable giving from his $150 billion estate.