Carl Icahn acquired 1.53M Greenbrier Cos. shares worth $71.9M. That's 0.85% of their equity portfolio (10th largest holding). The investor owns 5.00% of the outstanding Greenbrier Cos. stock. Carl Icahn acquired their 1.53M shares in Q1 2008. So far they never sold any shares in the company. The stake costed the investor $36.3M, netting the investor a gain of 98% so far.