Jim Simons acquired 350 Thousand Aspen Aerogels shares worth $8.69 Million. That's 0.01% of their equity portfolio (988th largest holding). The first Aspen Aerogels trade was made in Q3 2015. Since then Jim Simons bought shares 21 more times and sold shares on twelve occasions. The stake costed the investor $8.21 Million, netting the investor a gain of 5.9% so far.