GTA 5 - How to Make $2.1 Billion

IGN shows you how to make more than two billion (with a 'B') dollars via the stock market assassination missions in Grand Theft Auto 5 on PS4 / Xbox One and PS3 / Xbox 360. For more on GTA 5, check out our full wiki on IGN @ http://www.ign.com/wikis/gta-5