David Einhorn acquired 1.51 Million KBR shares worth $83.3 Million. That's 5.14% of their entire equity portfolio (5th largest holding). The investor owns 1.12% of the outstanding KBR stock. David Einhorn acquired their 1.51 Million shares in Q4 2006. So far they never sold any shares in the company. The stake costed the investor $39.6 Million, netting the investor a gain of 110% so far.