DOSSIER · 13F Holders · Q2 2026Basic Materials · Mining & Quarrying of Nonmetallic Minerals (No Fuels)
MLM
MARTIN MARIETTA MATLS INC
1,125 institutions still hold MARTIN MARIETTA MATLS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.
CUSIP 573284106·Mining & Quarrying of Nonmetallic Minerals (No Fuels)·1,125 13F holders·last filed Jun 30, 2026
AI Holders Summary · Q2 2026
1,125 institutions reported MLM in Q2 2026. BlackRock, Inc. leads at 12.4% of the visible book.
Top holders
Sorted by position value. Source: SEC EDGAR 13F-HR filings.
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