Warren Buffett has donated $1.25 billion in Berkshire Hathaway Inc. stock to the Bill & Melinda Gates Foundation

Multibillionaire Warren Buffett the oracle of Omaha has again donated $1.25 billion in Berkshire Hathaway Inc. stock shares to the Bill & Melinda Gates Foundation.

The gift is the third installment in Warren Buffett's plan to transfer the majority of his wealth to the Seattle-based foundation run by the Microsoft Corp. chairman bill Gates and his wife Melinda .