MLM Martin Marietta Materials, Inc.
Martin Marietta Materials, Inc. (MLM) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| TCI FUND MANAGEMENT LTD Activist | New | +1.32M | — | $758.4M | 1.5% | 85 |
| 59 North Capital Management Long/Short | New | +214.1K | — | $123.5M | 2.7% | 80 |
| Junto Capital Management Long/Short | New | +123.5K | — | $71.2M | 1.3% | 70 |
| Suvretta Capital Management Long/Short Growth | New | +26.0K | — | $15.0M | 0.3% | 63 |
| RENAISSANCE TECHNOLOGIES LLC Quant | New | +31.9K | — | $18.4M | 0.0% | 62 |
| Hawk Ridge Capital Management Long/Short | Increased | +78.1K | +48.7% | $45.1M | 4.4% | 62 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | New | +18.5K | — | $10.7M | 0.0% | 60 |
| MARSHALL WACE, LLP Long/Short | New | +4.5K | — | $2.6M | 0.0% | 58 |
| D. E. Shaw & Co., Inc. Quant | New | +1.4K | — | $824.7K | 0.0% | 58 |
| Cinctive Capital Management Long/Short Quant | New | +30.0K | — | $17.3M | 0.7% | 57 |
Most significant buyers
By move score, not size.
- TCI FUND MANAGEMENT LTD
- 59 North Capital Management
- Junto Capital Management
- Suvretta Capital Management
- RENAISSANCE TECHNOLOGIES LLC
Most significant sellers
By move score, not size.
- Verition Fund Management
- Interval Partners
- Man Group
- Hudson Bay Capital Management
- Alkeon Capital Management
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| TCI FUND MANAGEMENT LTD | 1 | 1.3M | 0 | +1.32M | — | 1.5% | New | 85 |
| 59 North Capital Management | 1 | 214.1K | 0 | +214.1K | — | 2.7% | New | 80 |
| Junto Capital Management | 2 | 123.5K | 0 | +123.5K | — | 1.3% | New | 70 |
| Suvretta Capital Management | 2 | 26.0K | 0 | +26.0K | — | 0.3% | New | 63 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 31.9K | 0 | +31.9K | — | 0.0% | New | 62 |
| Hawk Ridge Capital Management | 2 | 238.7K | 160.5K | +78.1K | +48.7% | 4.4% | Increased | 62 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 18.5K | 0 | +18.5K | — | 0.0% | New | 60 |
| MARSHALL WACE, LLP | 2 | 4.5K | 0 | +4.5K | — | 0.0% | New | 58 |
| D. E. Shaw & Co., Inc. | 1 | 1.4K | 0 | +1.4K | — | 0.0% | New | 58 |
| Cinctive Capital Management | 3 | 30.0K | 0 | +30.0K | — | 0.7% | New | 57 |
| Verition Fund Management | 2 | 0 | 8.7K | -8.7K | -100.0% | 0.0% | Sold Out | 56 |
| MILLENNIUM MANAGEMENT LLC | 2 | 54.1K | 14.9K | +39.3K | +264.2% | 0.0% | Increased | 55 |
| Interval Partners | 3 | 23.7K | 94.2K | -70.5K | -74.9% | 0.4% | Reduced | 54 |
| Man Group | 3 | 0 | 7.1K | -7.1K | -100.0% | 0.0% | Sold Out | 54 |
| Hudson Bay Capital Management | 3 | 0 | 1.6K | -1.6K | -100.0% | 0.0% | Sold Out | 53 |
| Balyasny Asset Management L.P. | 2 | 1.9K | 900 | +978 | +108.7% | 0.0% | Increased | 51 |
| Aquatic Capital Management | 4 | 9.0K | 0 | +9.0K | — | 0.2% | New | 51 |
| Alkeon Capital Management | 1 | 627.4K | 747.4K | -120.0K | -16.1% | 1.5% | Reduced | 50 |
| Skye Global Management | 1 | 252.0K | 268.0K | -16.0K | -6.0% | 2.9% | Reduced | 49 |
| ExodusPoint Capital Management | 3 | 17.5K | 4.9K | +12.7K | +260.0% | 0.1% | Increased | 49 |
| Boothbay Fund Management | 4 | 540 | 0 | +540 | — | 0.0% | New | 49 |
| Woodline Partners LP | 2 | 13.1K | 70.9K | -57.8K | -81.5% | 0.0% | Reduced | 48 |
| Engineers Gate | 4 | 493 | 0 | +493 | — | 0.0% | New | 48 |
| Select Equity Group | 1 | 1.0M | 1.0M | -22.2K | -2.1% | 3.1% | Reduced | 48 |
| D1 Capital Partners L.P. | 1 | 345.1K | 322.9K | +22.2K | +6.9% | 0.6% | Increased | 43 |
| Squarepoint Ops LLC | 2 | 2.9K | 1.6K | +1.3K | +78.2% | 0.0% | Increased | 43 |
| CITADEL ADVISORS LLC | 1 | 25.9K | 16.7K | +9.2K | +54.8% | 0.0% | Increased | 42 |
| Gotham Asset Management, LLC | 2 | 36.7K | 22.0K | +14.7K | +66.9% | 0.1% | Increased | 42 |
| Y-Intercept | 4 | 1.3K | 12.5K | -11.2K | -89.6% | 0.0% | Reduced | 42 |
| TWO SIGMA INVESTMENTS, LP | 2 | 51.4K | 94.2K | -42.8K | -45.4% | 0.0% | Reduced | 41 |
| Edgestream Partners | 4 | 991 | 513 | +478 | +93.2% | 0.0% | Increased | 41 |
| Stockbridge Partners | 1 | 42.5K | 32.2K | +10.2K | +31.8% | 0.5% | Increased | 41 |
| Chilton Investment Company | 2 | 828 | 581 | +247 | +42.5% | 0.0% | Increased | 34 |
| Wolverine Asset Management | 2 | 1.0K | 1.5K | -500 | -33.3% | 0.0% | Reduced | 31 |
| Graham Capital Management | 3 | 3.6K | 2.8K | +850 | +30.9% | 0.1% | Increased | 26 |
| Tudor Investment Corporation | 2 | 2.7K | 2.6K | +45 | +1.7% | 0.0% | Increased | 23 |
| AQR Capital Management | 3 | 67.0K | 65.5K | +1.5K | +2.4% | 0.0% | Increased | 20 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.