Ken Griffin acquired 4.2 Thousand Armstrong World Industries shares worth $674 Thousand. That's 0.00% of their equity portfolio (3212th 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 51 occasions. The stake costed the investor $456 Thousand, netting the investor a gain of 48% so far.