Ken Griffin acquired 3.61 Million Block- Ordinary Shares shares worth $300 Million. That's 0.29% of their equity portfolio (50th largest holding). The first Block- Ordinary Shares trade was made in Q4 2015. Since then Ken Griffin bought shares 48 more times and sold shares on 41 occasions. The stake costed the investor $270 Million, netting the investor a gain of 11% so far.