John Armitage's Egerton Capital significantly increased its position in Armstrong World Industries, a leading manufacturer of ceiling and wall systems. According to a quarterly disclosure, the firm boosted its holding by 107% to 925,390 shares, a stake valued at $148.45 million as of June 30, 2026. This regulatory filing reflects trading activity that occurred during the second quarter, prior to the filing date of July 21.
The investment disclosure was filed just before Armstrong World Industries reported record quarterly sales and raised its full-year profit guidance on July 28. The company cited robust demand for its commercial ceiling systems as a key driver for its strong performance and positive outlook for the remainder of the year.