Warren Buffett giving a chunk of his fortune to 70 million American children would be a "fitting legacy" for the investor, Brad Gerstner said.

The billionaire Berkshire Hathaway chair instead donated thousands of shares in his company to four foundations run by his children.

The billionaire Berkshire Hathaway chair instead donated thousands of shares in his company to four foundations run by his children.

Investor did not donate to Gates Foundation for first time in two decades