Carl Icahn acquired 1.53 Million Greenbrier Cos. shares worth $78.6 Million. That's 0.74% of their equity portfolio (9th largest holding). The investor owns 4.74% of the outstanding Greenbrier Cos. stock. Carl Icahn acquired their 1.53 Million shares in Q1 2008. So far they never sold any shares in the company. The stake costed the investor $36.3 Million, netting the investor a gain of 116% so far.