Ken Griffin acquired 81.4 Thousand Resmed shares worth $19.8 Million. That's 0.02% of their equity portfolio (848th largest holding). The first Resmed trade was made in Q2 2013. Since then Ken Griffin bought shares 59 more times and sold shares on 50 occasions. The stake costed the investor $14.4 Million, netting the investor a gain of 37% so far.