Jim Simons acquired 764 Thousand Aspen Aerogels shares worth $4.42 Million. That's 0.01% of their equity portfolio (1437th largest holding). The first Aspen Aerogels trade was made in Q3 2015. Since then Jim Simons bought shares 22 more times and sold shares on fourteen occasions. The investor's estimated purchase price is $14.7 Million, resulting in a loss of 70%.