market folly

Jeff Ubben's activist investment firm ValueAct Capital has filed a 13D and a Form 4 with the SEC regarding its stake in Armstrong World Industries (AWI).  Per the filing, ValueAct now owns 12.9% of the company with 6.85 million shares. 

The Form 4 notes they sold 2.35 million shares on March 12th at $59.60 per share.  We've also highlighted other recent portfolio activity from ValueAct here.

Per Google Finance, Armstrong World Industries is "a global producer of ceiling systems. The Company owns and operates the Building Products (Ceilings) segment. The Company designs, manufactures and sells ceiling systems (primarily mineral fiber, fiberglass wool and metal) around the world. Its products are used in commercial and institutional buildings. Its geographical segments include Americas (including Canada); Europe, Middle East and Africa (including Russia) (EMEA), and Pacific Rim. As of December 31, 2016, it had 15 manufacturing plants in eight countries, including six plants located throughout the United States. Its Americas segment sells products for use in single and multi-family housing. It sells commercial products to building materials distributors re-selling its products to contractors, subcontractors' alliances, architect and design firms, and facility owners. Residential ceiling products are sold in the Americas primarily to wholesalers and retailers."