Ken Griffin's position in Weyerhaeuser is currently worth $17.1 Million. That's 0.02% of their equity portfolio (860th largest holding). The first Weyerhaeuser trade was made in Q2 2013. Since then Ken Griffin bought shares 51 more times and sold shares on 48 occasions. The stake costed the investor $15.9 Million, netting the investor a gain of 7.7% so far.