Bill Ackman acquired 2.77 Million Hyatt Hotels shares worth $365 Million. That's 3.17% of their equity portfolio (9th largest holding). The investor owns 2.90% of the outstanding Hyatt Hotels stock. Bill Ackman acquired their 2.77 Million shares in Q4 2009. So far they never sold any shares in the company. The stake costed the investor $80.8 Million, netting the investor a gain of 352% so far.