Jim Simons acquired 463 Thousand Great Lakes Dredge & Dock shares worth $4.24 Million. That's 0.01% of their equity portfolio (1430th 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 eighteen occasions. The investor's estimated purchase price is $4.35 Million, resulting in a loss of 2.6%.