"Alibaba’s IPO last month rocked global markets. Shares of the Chinese e-commerce giant are now worth around $90. Yahoo still has a 16% stake worth $36 billion, but it left almost as much money on the table–some $35.5 billion–as its entire current market capitalization."
...
"Nine years ago, before Yang was CEO of Yahoo, he spent $1 billion of Yahoo’s money for 30% of Ma’s company (Alibaba)"...
"SoftBank invested $2 million for a 5% stake in Yahoo, putting in another $105 million in 1996 and then another $250 million in 1998 to take as much as 37% of the company at one point."