Ken Griffin acquired 3.19 Million Ardelyx shares worth $13.4 Million. That's 0.01% of their equity portfolio (1052nd largest holding). The investor owns 1.51% of the outstanding Ardelyx stock. The first Ardelyx trade was made in Q3 2016. Since then Ken Griffin bought shares 45 more times and sold shares on 34 occasions. The investor's estimated purchase price is $16.5 Million, resulting in a loss of 19%.