Tesla stock, of which Musk is the largest holder, continues to hit record highs. Buffett, meanwhile, donated almost $3 billion of Berkshire Hathaway stock, causing his riches to shrink.
Those with money in the Valley, as well as in other lucrative industries, have become known in recent years for investing in preparations for disaster scenarios, such as viral outbreaks.
Elon Musk bought the submarine car from 'The Spy Who Loved Me,' while Jeff Bezos dredged pieces of the Apollo 12 engine from the bottom of the Atlantic.
