Marine ProductsMPX
13F holders, Q1 2026 (March 31)75holders +1
10new positions
12sold out
2famous investors
$7.27avg. 13F price*
At the end of Q1 2026, 75 institutions reported holding Marine Products Corp. (MPX) in their 13F filings, up 1 from Q4 2025. 10 opened new positions and 12 sold out. The largest holders were Dimensional Fund Advisors LP ($5.6M), BlackRock, Inc. ($4.5M) and GAMCO Investors ($3.7M). 2 famous investors held it, including Mario Gabelli (0.0% of GAMCO Investors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Marine Products Corp.
- CUSIP
- 568427108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 10 | $1.7M |
| Exits | 12 | $280K |
All 13F filers, Q4 2025 → Q1 2026: 426,549 shares bought and 161,711 shares sold, net +264,838 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 75 holders
| Dimensional Fund Advisors LP | 0.00% | Add +2.8% | 767,510 | $5.6M |
| BlackRock, Inc. | 0.00% | Reduce -0.9% | 625,523 | $4.5M |
| GAMCO Investors | 0.04% | Add +1.8% | 508,571 | $3.7M |
| Vanguard Capital Management LLC | 0.00% | — | 450,268 | $3.3M |
| Deprince Race & Zollo Inc. | 0.06% | Add +7.2% | 446,447 | $3.2M |
| Russell Investments Group, Ltd. | 0.00% | Add +25.3% | 387,577 | $2.8M |
| De Lisle Partners LLP | 0.32% | No change | 363,696 | $2.6M |
| Geode Capital Management, LLC | 0.00% | Add +4.3% | 260,637 | $1.9M |
| Gabelli Funds LLC | 0.01% | No change | 232,500 | $1.7M |
| Teton Advisors, LLC | 1.14% | Reduce -0.5% | 223,000 | $1.6M |
| State Street Corp. | 0.00% | Reduce -1.0% | 181,372 | $1.3M |
| Bank of New York Mellon Corp | 0.00% | Add +9.9% | 158,818 | $1.2M |
| K2 Principal Fund, L.P. | 0.27% | New | 120,216 | $874K |
| Northern Trust Corp. | 0.00% | Reduce -5.4% | 85,836 | $624K |
| Hanover Advisors Inc. | 0.23% | No change | 78,135 | $568K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 71,966 | $523K |
| Renaissance Technologies | 0.00% | Reduce -2.6% | 66,002 | $480K |
| Abc Arbitrage SA | 0.06% | New | 62,067 | $451K |
| American Century Companies Inc. | 0.00% | Reduce -28.3% | 54,435 | $396K |
| Truist Financial Corp. | 0.00% | No change | 54,000 | $393K |
| Vanguard Portfolio Management LLC | 0.00% | — | 51,904 | $377K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -1.7% | 43,393 | $315K |
| Virtu Financial LLC | 0.01% | New | 31,178 | $227K |
| Morgan Stanley | 0.00% | Reduce -68.2% | 30,695 | $223K |
| Pinnacle Financial Partners, Inc. | 0.00% | No change | 30,565 | $222K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.1% | 25,735 | $187K |
| Ancora Advisors LLC | 0.00% | New | 25,207 | $183K |
| T. Rowe Price Associates Inc. | 0.00% | Add +26.0% | 20,355 | $148K |
| Nuveen, LLC | 0.00% | Add +0.6% | 19,523 | $142K |
| UBS Group AG | 0.00% | Add +281.2% | 15,602 | $113K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +0.3% | 14,442 | $104K |
| Alliancebernstein L.P. | 0.00% | No change | 10,440 | $91K |
| Bank of America Corp. | 0.00% | Add +14.1% | 12,207 | $89K |
| Susquehanna International Group, LLP | 0.00% | Add +19.7% | 12,034 | $87K |
| Rhumbline Advisers | 0.00% | Reduce -0.2% | 10,738 | $78K |
| Osaic Holdings, Inc. | 0.00% | Reduce -6.8% | 6,274 | $46K |
| FMR LLC | 0.00% | Reduce -44.0% | 4,739 | $34K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +308.0% | 4,655 | $34K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +2.4% | 4,302 | $31K |
| CANADA LIFE ASSURANCE Co | 0.00% | Add +4.0% | 4,234 | $31K |
| New York State Common Retirement Fund | 0.00% | No change | 4,171 | $30K |
| JPMorgan Chase & Co. | 0.00% | Reduce -6.9% | 3,757 | $27K |
| Wells Fargo & Company | 0.00% | Reduce -66.8% | 3,253 | $24K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 3,065 | $22K |
| Vanguard Global Advisers, LLC | 0.00% | — | 2,990 | $22K |
| BNP Paribas Financial Markets | 0.00% | Add +0.3% | 2,250 | $16K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +64.1% | 2,229 | $16K |
| Barclays PLC | 0.00% | Reduce -83.9% | 2,227 | $16K |
| Royal Bank of Canada | 0.00% | Reduce -67.7% | 1,026 | $7K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 813 | $6K |
| Legal & General Group Plc | 0.00% | Reduce -7.8% | 681 | $5K |
| PNC Financial Services Group, Inc. | 0.00% | Add +4.0% | 540 | $4K |
| California State Teachers Retirement System | 0.00% | Reduce -10.7% | 476 | $3K |
| Citigroup Inc. | 0.00% | Reduce -54.1% | 437 | $3K |
| Harbor Capital Advisors, Inc. | 0.00% | No change | 444 | $3K |
| Cwm, LLC | 0.00% | Reduce -58.4% | 322 | $2K |
| Triumph Capital Management | 0.00% | No change | 271 | $2K |
| Deutsche Bank AG | 0.00% | No change | 213 | $2K |
| Sterling Capital Management LLC | 0.00% | Reduce -46.7% | 162 | $1K |
| Farther Finance Advisors, LLC | 0.00% | New | 145 | $1K |
| GAMMA Investing LLC | 0.00% | Reduce -11.6% | 99 | $720 |
| Optiver Holding B.V. | 0.00% | Reduce -44.4% | 70 | $509 |
| Country Trust Bank | 0.00% | No change | 60 | $436 |
| Jones Financial Companies LLLP | 0.00% | New | 43 | $314 |
| MAI Capital Management | 0.00% | New | 14 | $105 |
| IFP Advisors, Inc | 0.00% | Reduce -36.4% | 14 | $102 |
| EverSource Wealth Advisors, LLC | 0.00% | Add +40.0% | 14 | $102 |
| Essential Partners LLC | 0.00% | Reduce -7.7% | 12 | $87 |
| Root Financial Partners, LLC | 0.00% | New | 8 | $58 |
| Arax Advisory Partners | 0.00% | New | 4 | $51 |
| True Wealth Design, LLC | 0.00% | Reduce -20.0% | 4 | $30 |
| Sunbelt Securities, Inc. | 0.00% | Reduce -25.0% | 3 | $22 |
| Allworth Financial LP | 0.00% | Reduce -50.0% | 1 | $8 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 1 | $7 |
| Covestor Ltd | 0.00% | Reduce -8.3% | 44 | $0 |
"% of holder's portfolio" is MPX's weight in each manager's 13F, not the share of Marine Products Corp. the manager owns.