http://www.forbes.com/sites/parmyolson/2014/09/30/how-jerry-yang-made-the-most-lucrative-bet-in-tech-history/#2a0c69f13aed
http://finance.yahoo.com/news/yahoo-closes-7-6-billion-deal-alibaba-group-161614948--finance.html
bonus: https://www.hottopics.ht/stories/how-to/masayoshi-son-ceo-lost-70bn-in-day-before-conquering-world/