Ken Griffin acquired 17.3 Thousand Simpson Manufacturing , Inc. shares worth $2.72 Million. That's 0.00% of their equity portfolio (2042nd largest holding). The first Simpson Manufacturing , Inc. trade was made in Q2 2013. Since then Ken Griffin bought shares 44 more times and sold shares on 52 occasions. The stake costed the investor $2.2 Million, netting the investor a gain of 24% so far.