It should come as no surprise that the most popular of these portfolios is that of renowned investor Warren Buffett , CEO of Berkshire Hathaway ( BRK.B ) and one of the richest people in the world.
Take context from the input text and decide on the accurate relationship between 'Berkshire Hathaway' and 'Warren Buffett' from the options provided.
Options: distributed by, operator, creator, director/manager