MLM Institutional Ownership
Who owns Martin Marietta Materials Inc and what the big funds did with it last quarter, from every SEC 13F filing. 1,075 funds reported holding MLM at Jun 30, 2026, together owning 98.7% of the company.
- ●457 buying vs 489 selling
- ▲Held by funds +1.2 pts
- ●Funds holding -4
- ▲Superinvestors: 3 added, 0 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 1,075 | 1,079 | −0.4% |
| In funds' top 10 | 17 | 22 | −22.7% |
| 13F shares | 59.3M | 58.6M | +1.2% |
| Held by funds | 98.7% | 97.5% | +1.2 pts |
| New positions | 101 | 86 | +17.4% |
| Increased | 356 | 364 | −2.2% |
| Reduced | 391 | 376 | +4.0% |
| Sold out | 98 | 134 | −26.9% |
| Calls (shares) | 6,300 | 4,800 | +31.3% |
| Puts (shares) | 9,600 | 15K | −34.5% |
| Put/call ratio | 1.52 | 3.05 | −50.1% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in MLM
All superinvestors →
Who owns MLM
share of fund held shares- Index and passive funds33.3%
- Active managers and hedge funds46.5%
- Banks and brokers17.7%
- Pensions, insurers and other2.5%
The top 10 holders own 45.5% of all MLM shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
330 funds changed their position- Principal Financial Group IncAdded+269K sh
- DekaBank Deutsche GirozentraleTrimmed−158K sh
- Assenagon Asset Management S.A.Trimmed−40K sh
- Fisher Funds Management LTDAdded+38K sh
- Franklin Street Advisors Inc /ncTrimmed−29K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.81% | 4.7M | $2.7B | +6,689 |
| 2 | Vanguard Capital Management LLC | 6.54% | 3.9M | $2.3B | +12K |
| 3 | Vanguard Portfolio Management LLC | 5.32% | 3.2M | $1.8B | +37K |
| 4 | State Street Corp | 5.26% | 3.2M | $1.8B | +282K |
| 5 | Bank of America Corp /de/ | 4.07% | 2.4M | $1.4B | +47K |
| 6 | Fmr LLC | 3.65% | 2.2M | $1.3B | −415K |
| 7 | Principal Financial Group Inc | 3.52% | 2.1M | $1.2B | +22K |
| 8 | Aristotle Capital Management, LLC | 3.05% | 1.8M | $1.1B | −124K |
| 9 | Victory Capital Management Inc | 2.97% | 1.8M | $1B | +146K |
| 10 | Geode Capital Management, LLC | 2.67% | 1.6M | $920M | +13K |
- TCI Fund Management Ltd+1.3M sh+$758M
- Norges Bank+557K sh+$321M
- State Street Corp+282K sh+$163M
- Goldman Sachs Group Inc+277K sh+$160M
- 59 North Capital Management, LP+214K sh+$123M
- Victory Capital Management Inc+146K sh+$84.4M
- Freestone Grove Partners LP+124K sh+$71.7M
- Junto Capital Management LP+124K sh+$71.2M
- Fmr LLC−415K sh−$240M
- Jpmorgan Chase & Co−393K sh−$229M
- Morgan Stanley−330K sh−$190M
- T. Rowe Price Investment Management, Inc.−311K sh−$179M
- Congress Asset Management Co−177K sh−$102M
- Rathbones Group PLC−166K sh−$95.5M
- Aristotle Capital Management, LLC−124K sh−$71.2M
- Alkeon Capital Management LLC−120K sh−$69.2M
MLM institutional ownership FAQ
Who owns the most MLM stock?
In Q2 2026 13F filings the largest holder of MLM was BlackRock, Inc., followed by Vanguard Capital Management LLC and Vanguard Portfolio Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of MLM is owned by institutions?
Funds that file 13F reports held 98.7% of MLM's shares at Jun 30, 2026, compared with 97.5% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying MLM?
In Q2 2026, 457 funds bought MLM (101 of them new positions) and 489 sold (98 sold out completely). Among well known investors, 3 added and 0 cut. Our fund sentiment for MLM is bullish.
What is MLM's institutional put/call ratio?
Funds reported $5.5M of MLM puts against $3.6M of calls, a put/call ratio of 1.52 (3.05 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this MLM ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.