Security · featured owners
MLM Martin Marietta Matls Inc.
Materials COM Equity as of 2026 Q2 among managers we track
- 5 Owners
- Max 12.0%
- $1.5B
- 1 new 3 add 1 reduce
MLM (Martin Marietta Matls Inc.) is held in 5 featured 13F books as of 2026 Q2. Andrew Steginsky - Steginsky Capital is the largest tracked holder by portfolio weight (12.0%). Figures are as-filed 13F, not free float.
Who owns this now
Largest portfolio weights among featured holders · max 12.0% (Andrew Steginsky - Steginsky Capital) · not free-float ownership
holders
sorted by value · long equity only · current book 2026 Q2 · open a manager for their book
| history | |||||
|---|---|---|---|---|---|
| Chris Hohn - Tci Fund Management 2026 Q2 | 1.4% | New 1.4% | 1,315,109 | $758M | history |
| Thomas Russo - Gardner Russo & Quinn 2026 Q2 | 4.6% | Reduce −1.4% | 705,367 | $407M | history |
| Dan Sundheim - D1 Capital Partners 2026 Q2 | 0.57% | Add +6.9% | 345,060 | $199M | history |
| Andrew Steginsky - Steginsky Capital 2026 Q2 | 12.0% | Add +7.9% | 138,549 | $80M | history |
| Wallace Weitz - Weitz Investment Management 2026 Q2 | 1.9% | Add +19.1% | 47,370 | $27M | history |
SEC filings
Recent issuer filings from EDGAR · 18 shown · open Filing / Doc on SEC.gov
| Filed | Form | Detail | Links |
|---|---|---|---|
| 8-K | 1.01,2.01,3.02,5.02,7.01,9.01 | Filing Doc | |
| 8-K | 1.01,1.02,2.03,9.01 | Filing Doc | |
| 8-K | 1.01,2.03,8.01,9.01 | Filing Doc | |
| 424B2 | Filing Doc | ||
| 8-K | 1.01,7.01,9.01 | Filing Doc | |
| 8-K | 8.01,9.01 | Filing Doc | |
| 424B5 | Filing Doc | ||
| 8-K | 8.01,9.01 | Filing Doc | |
| 8-K | 5.02 | Filing Doc | |
| 8-K | 2.02,7.01,9.01 | Filing Doc | |
| 10-Q | Filing Doc | ||
| 8-K | 1.01,2.03,9.01 | Filing Doc | |
| 8-K | 7.01,9.01 | Filing Doc | |
| 8-K | 1.01,3.02,8.01,9.01 | Filing Doc | |
| 8-K | 5.02,5.07,9.01 | Filing Doc | |
| 8-K | 2.02,7.01 | Filing Doc | |
| 10-Q | Filing Doc | ||
| 8-K | 5.02,9.01 | Filing Doc |
No filings match this filter.
Insider forms
Form 3 / 4 / 5 from EDGAR · 8 rows shown
| Filed | Form | Detail | Links |
|---|---|---|---|
| 4 | Period Aug 31, 2026 · 3 forms | Filing Doc | |
| 4 | Period Sep 1, 2026 | Filing Doc | |
| 4 | Period Aug 21, 2026 | Filing Doc | |
| 4 | Period Aug 3, 2026 | Filing Doc | |
| 4 | Period May 29, 2026 · 3 forms | Filing Doc | |
| 4 | Period May 14, 2026 · 9 forms | Filing Doc | |
| 4 | Period May 1, 2026 | Filing Doc | |
| 4 | Period Mar 1, 2026 · 3 forms | Filing Doc |
financials
US-GAAP annual · as tagged in Form 10-K · fiscal years · values link to the SEC filing
Income statement
Balance sheet
ownership over time
filing count by report period · click a bar for that quarter’s holders