Ken Griffin acquired 726k Shake Shack shares worth $74M. That's 0.06% of their equity portfolio (388th largest holding). The investor owns 1.73% of the outstanding Shake Shack stock. The first Shake Shack trade was made in Q2 2015. Since then Ken Griffin bought shares 59 more times and sold shares on 50 occasions. The stake costed the investor $56.6M, netting the investor a gain of 31% so far.