Jim Simons acquired 766 Thousand Aspen Aerogels shares worth $3.79 Million. That's 0.01% of their equity portfolio (1454th 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 thirteen occasions. The investor's estimated purchase price is $14.7 Million, resulting in a loss of 74%.