Ken Griffin acquired 126 Thousand Aspen Technology shares worth $24.9 Million. That's 0.02% of their equity portfolio (704th largest holding). The first Aspen Technology trade was made in Q2 2013. Since then Ken Griffin bought shares 45 more times and sold shares on 49 occasions. The stake costed the investor $24 Million, netting the investor a gain of 3.9% so far.