DOSSIER · 13F Holders · Q1 2026Basic Materials · Mining & Quarrying of Nonmetallic Minerals (No Fuels)Inflation hedgeYield
MLM
MARTIN MARIETTA MATLS INC
1,126 institutions still hold MARTIN MARIETTA MATLS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.
CUSIP 573284106·Mining & Quarrying of Nonmetallic Minerals (No Fuels)·1,126 13F holders·last filed Mar 31, 2026
AI Holders Summary · Q1 2026
1,126 institutions reported MLM in Q1 2026. BlackRock, Inc. leads at 12.8% of the visible book. +81 net new institutions vs prior quarter — accumulation reading.
Top holders
Sorted by position value. Source: SEC EDGAR 13F-HR filings.
Page 1 of 57
1106 more holders available. Log in →