Larry Page, Sergey Brin are $50 billion richer in 3 months after Alphabet stock surge

Larry Page, Sergey Brin are $50 billion richer in 3 months after Alphabet stock surge

Google cofounders Larry Page and Sergey Brin met at Stanford.James Leynse/Corbis via Getty ImagesLarry Page and Sergey Brin are the biggest wealth gainers this year after Oracle's Larry Ellison.Alphabet's cofounders have added over $50 billion to their respective fortunes in just three months.The "Google Guys" are worth a combined $439 billion — more than Costco or Bank of America.The "Google Guys" have got their groove back.Larry Page and Serge…