Donald Yacktman's position in Armstrong World Industries is currently worth $132 Million. That's 1.79% of their equity portfolio (24th largest holding). The investor owns 2.03% of the outstanding Armstrong World Industries stock. The first Armstrong World Industries trade was made in Q1 2021. Since then Donald Yacktman bought shares seven more times and sold shares on nine occasions. The stake costed the investor $73.5 Million, netting the investor a gain of 80% so far.