Ken Griffin acquired 1.37 Million Mastercard Incorporated shares worth $622 Million. That's 0.64% of their equity portfolio (14th largest holding). The first Mastercard Incorporated trade was made in Q2 2013. Since then Ken Griffin bought shares 45 more times and sold shares on 54 occasions. The stake costed the investor $378 Million, netting the investor a gain of 64% so far.