Ken Griffin acquired 10.3 Thousand Northwest Pipe shares worth $330 Thousand. That's 0.00% of their equity portfolio (3750th largest holding). The first Northwest Pipe trade was made in Q2 2013. Since then Ken Griffin bought shares 27 more times and sold shares on 23 occasions. The stake costed the investor $306 Thousand, netting the investor a gain of 7.8% so far.