Warren Buffett is an investor.
Warren Edward Buffett ( [ ˈbʌfᵻt ] born August 30 , 1930 ) is an American business magnate , investor , and philanthropist . He is considered by some to be one of the most successful investors in the world , and as of March 2017 is the second wealthiest person in the United States , and the fourth wealthiest in the world , with a total net worth of $ 73.3 billion .