Marine ProductsMPX
13F holders, Q3 2025 (September 30)70holders −1
4new positions
5sold out
3famous investors
$8.87avg. 13F price*
At the end of Q3 2025, 70 institutions reported holding Marine Products Corp. (MPX) in their 13F filings, down 1 from Q2 2025. 4 opened new positions and 5 sold out. The largest holders were Dimensional Fund Advisors LP ($6.6M), BlackRock, Inc. ($5.6M) and Vanguard Group Inc. ($5.1M). 3 famous investors held it, including Mario Gabelli (0.0% of GAMCO Investors's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Marine Products Corp.
- CUSIP
- 568427108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $270K |
| Exits | 5 | $243K |
All 13F filers, Q2 2025 → Q3 2025: 133,625 shares bought and 73,922 shares sold, net +59,703 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 70 holders
| Dimensional Fund Advisors LP | 0.00% | Add +0.3% | 738,673 | $6.6M |
| BlackRock, Inc. | 0.00% | Reduce -0.9% | 630,091 | $5.6M |
| Vanguard Group Inc. | 0.00% | Add +1.6% | 576,299 | $5.1M |
| GAMCO Investors | 0.04% | Reduce -0.9% | 507,073 | $4.5M |
| De Lisle Partners LLP | 0.40% | Add +2.4% | 363,696 | $3.2M |
| Deprince Race & Zollo Inc. | 0.06% | Add +9.7% | 313,473 | $2.8M |
| Russell Investments Group, Ltd. | 0.00% | Add +19.9% | 261,397 | $2.3M |
| Geode Capital Management, LLC | 0.00% | Reduce -0.1% | 247,713 | $2.2M |
| Teton Advisors, LLC | 1.33% | — | 243,500 | $2.2M |
| Bank of New York Mellon Corp | 0.00% | Reduce -1.2% | 242,941 | $2.2M |
| Gabelli Funds LLC | 0.01% | No change | 232,000 | $2.1M |
| State Street Corp. | 0.00% | Reduce -3.0% | 180,400 | $1.6M |
| Northern Trust Corp. | 0.00% | Reduce -1.5% | 92,654 | $822K |
| American Century Companies Inc. | 0.00% | Reduce -4.9% | 80,392 | $713K |
| Hanover Advisors Inc. | 0.27% | No change | 78,135 | $693K |
| Morgan Stanley | 0.00% | Add +3.1% | 76,545 | $679K |
| Renaissance Technologies | 0.00% | Add +0.8% | 71,102 | $631K |
| Truist Financial Corp. | 0.00% | No change | 54,000 | $479K |
| Synovus Financial Corp. | 0.00% | No change | 30,565 | $271K |
| Citadel Advisors | 0.00% | New | 30,173 | $268K |
| Goldman Sachs Group Inc. | 0.00% | Add +5.0% | 26,677 | $237K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 25,735 | $228K |
| Nuveen, LLC | 0.00% | No change | 19,406 | $172K |
| Royal Bank of Canada | 0.00% | Add +21.2% | 18,926 | $167K |
| Los Angeles Capital Management LLC | 0.00% | Reduce -14.4% | 18,428 | $163K |
| T. Rowe Price Associates Inc. | 0.00% | No change | 16,155 | $144K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Reduce -0.0% | 14,133 | $121K |
| Rhumbline Advisers | 0.00% | Reduce -5.5% | 12,648 | $112K |
| Barclays PLC | 0.00% | Reduce -19.7% | 12,503 | $111K |
| Burney Co./ | 0.00% | Reduce -5.3% | 12,196 | $108K |
| Summit Financial Strategies, Inc. | 0.01% | Add +0.1% | 11,256 | $100K |
| Alliancebernstein L.P. | 0.00% | No change | 10,440 | $93K |
| Corient Private Wealth LP | 0.00% | No change | 10,006 | $89K |
| Bank of America Corp. | 0.00% | Reduce -5.9% | 9,678 | $86K |
| Osaic Holdings, Inc. | 0.00% | Reduce -3.9% | 8,619 | $75K |
| Wells Fargo & Company | 0.00% | Add +19.0% | 6,061 | $54K |
| FMR LLC | 0.00% | Reduce -53.0% | 4,804 | $43K |
| UBS Group AG | 0.00% | Add +54.2% | 4,661 | $41K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -15.1% | 4,268 | $38K |
| New York State Common Retirement Fund | 0.00% | No change | 4,171 | $37K |
| JPMorgan Chase & Co. | 0.00% | Reduce -15.7% | 4,105 | $36K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 3,065 | $27K |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -0.4% | 2,387 | $21K |
| Nisa Investment Advisors, LLC | 0.00% | Add +77.5% | 1,704 | $15K |
| BNP Paribas Financial Markets | 0.00% | Add +51.5% | 1,610 | $14K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -65.9% | 1,204 | $11K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 813 | $7K |
| Cwm, LLC | 0.00% | Add +26.7% | 840 | $7K |
| Legal & General Group Plc | 0.00% | No change | 739 | $7K |
| California State Teachers Retirement System | 0.00% | No change | 636 | $6K |
| Princeton Global Asset Management LLC | 0.00% | No change | 500 | $4K |
| PNC Financial Services Group, Inc. | 0.00% | No change | 488 | $4K |
| Harbor Capital Advisors, Inc. | 0.00% | Add +3.0% | 452 | $4K |
| Citigroup Inc. | 0.00% | Reduce -88.2% | 362 | $3K |
| Sterling Capital Management LLC | 0.00% | Add +212.1% | 284 | $3K |
| Amalgamated Bank | 0.00% | No change | 280 | $2K |
| Deutsche Bank AG | 0.00% | No change | 213 | $2K |
| GAMMA Investing LLC | 0.00% | Add +85.9% | 184 | $2K |
| Arax Advisory Partners | 0.00% | New | 147 | $1K |
| SBI Securities Co., Ltd. | 0.00% | Add +18.6% | 140 | $1K |
| Optiver Holding B.V. | 0.00% | New | 126 | $1K |
| Jones Financial Companies LLLP | 0.00% | No change | 86 | $795 |
| Country Trust Bank | 0.00% | No change | 60 | $532 |
| Friedenthal Financial | 0.00% | Add +3.3% | 31 | $274 |
| IFP Advisors, Inc | 0.00% | Add +11.1% | 30 | $266 |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -17.6% | 14 | $124 |
| Essential Partners LLC | 0.00% | Add +160.0% | 13 | $115 |
| Sunbelt Securities, Inc. | 0.00% | New | 5 | $44 |
| True Wealth Design, LLC | 0.00% | No change | 4 | $36 |
| Covestor Ltd | 0.00% | Reduce -5.8% | 49 | $0 |
"% of holder's portfolio" is MPX's weight in each manager's 13F, not the share of Marine Products Corp. the manager owns.