Dropbox’s main shareholder, owner, and who has the majority of voting power is the CEO and co-founder of the company, Andrew W. Houston (Drew Houston), who has most of the company’s Class B shares (which give him most of the voting power), which provides him with nearly 75% of the voting power. Other major institutional investors comprise The Vanguard Group (10.9% ownership), BlackRock (7.32% ownership), Ameriprise Financial (6.18% ownership), and Columbia Management Investment Advisers (5.96% ownership).