Bill Ackman's position in McDonald`s is currently worth $2.58 Billion. It makes up 25.51% of their stock portfolio and is their biggest holding. The investor owns 1.16% of the outstanding McDonald`s stock. Bill Ackman acquired their 8.25 Million shares between 2005 and 2009. So far they never sold any shares in the company. The stake costed the investor $396 Million, netting the investor a gain of 553% so far.