Ken Griffin acquired 146 Thousand Shake Shack shares worth $15.1 Million. That's 0.02% of their equity portfolio (930th largest holding). The first Shake Shack trade was made in Q2 2015. Since then Ken Griffin bought shares 51 more times and sold shares on 40 occasions. The stake costed the investor $9.21 Million, netting the investor a gain of 64% so far.