Jim Simons acquired 664 Thousand Great Lakes Dredge & Dock shares worth $4.74 Million. That's 0.01% of their equity portfolio (1331st largest holding). The first Great Lakes Dredge & Dock trade was made in Q2 2014. Since then Jim Simons bought shares sixteen more times and sold shares on seventeen occasions. The investor's estimated purchase price is $6.24 Million, resulting in a loss of 24%.