Ken Griffin acquired 73.7 Thousand Canadian National Railway shares worth $9.36 Million. That's 0.01% of their equity portfolio (1150th largest holding). The first Canadian National Railway trade was made in Q3 2013. Since then Ken Griffin bought shares 43 more times and sold shares on 55 occasions. The stake costed the investor $6.74 Million, netting the investor a gain of 39% so far.