Ken Griffin acquired 17.3 Thousand Armstrong World Industries shares worth $2.62 Million. That's 0.00% of their equity portfolio (2072nd largest holding). The first Armstrong World Industries trade was made in Q2 2013. Since then Ken Griffin bought shares 54 more times and sold shares on 48 occasions. The stake costed the investor $1.88 Million, netting the investor a gain of 40% so far.