MLM · NYSE · Construction Materials
A Schedule 13D means the holder owns more than 5% and keeps the option to push for changes: board seats, a sale, buybacks. It must be filed within 5 business days.
Institutions reporting a stake, Q2 2026
1,069
-4 vs Q1 2026
Share of stock reported
98.6%
59.3M of 60.1M shares outstanding
Change vs Q1 2026
+189K shares
100 new positions, 97 positions closed
Reported in 13F filings, which cover managers over $100M and include double counting. A 13F shows holdings on the last day of the quarter, not when shares were bought or sold. Change counts the 1,056 managers that reported both quarters.
Source: SEC Form 13F data sets, every filer, common stock only (options and bonds left out); 7 managers also reported puts and 8 managers calls. Amendments are applied; lines whose value was filed in thousands are scaled, and lines whose shares and value disagree are left out.
