Ken Griffin acquired 3.18 Million Activision Blizzard shares worth $298 Million. That's 0.36% of their equity portfolio (35th largest holding). The first Activision Blizzard trade was made in Q2 2013. Since then Ken Griffin bought shares 49 more times and sold shares on 44 occasions. The stake costed the investor $223 Million, netting the investor a gain of 34% so far.