GAMCO INVESTORS, INC. ET AL's ownership history for MTX

GAMCO INVESTORS, INC. ET AL currently holds 254.5K shares with a market value of $18.0M. It started holding MTX on 2024-09-30. At its peak, it held 282.1K shares on 2025-06-30. Its highest holding value was $18.6M on 2024-09-30. At its lowest, it held 238.3K shares on 2024-12-31, with a value of $15.3M on 2025-03-31. In the recent 180 days, GAMCO INVESTORS, INC. ET AL has decreased its shares by 23.4K. In the recent year, GAMCO INVESTORS, INC. ET AL has increased its shares by 14.4K.