Mayville Engineering Co.MEC
13F holders, Q1 2025 (March 31)116holders +2
14new positions
12sold out
4famous investors
$13.49avg. 13F price*
At the end of Q1 2025, 116 institutions reported holding Mayville Engineering Co. Inc. (MEC) in their 13F filings, up 2 from Q4 2024. 14 opened new positions and 12 sold out. The largest holders were Allspring Global Investments Holdings, LLC ($33.6M), BlackRock, Inc. ($11.4M) and Dimensional Fund Advisors LP ($10.4M). 4 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Mayville Engineering Co. Inc.
- CUSIP
- 578605107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 14 | $4.5M |
| Exits | 12 | $3.7M |
All 13F filers, Q4 2024 → Q1 2025: 931,453 shares bought and 958,660 shares sold, net −27,207 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 116 holders
| Allspring Global Investments Holdings, LLC | 0.06% | Add +0.1% | 2,441,077 | $33.6M |
| BlackRock, Inc. | 0.00% | Add +0.1% | 849,591 | $11.4M |
| Dimensional Fund Advisors LP | 0.00% | Add +9.6% | 772,568 | $10.4M |
| Tocqueville Asset Management L.P. | 0.14% | Reduce -1.4% | 621,204 | $8.3M |
| Vanguard Group Inc. | 0.00% | Reduce -2.8% | 616,146 | $8.3M |
| Royce & Associates LP | 0.09% | Add +1.2% | 591,319 | $7.9M |
| Granahan Investment Management, LLC | 0.32% | Reduce -17.4% | 478,038 | $6.4M |
| First Eagle Investment Management, LLC | 0.01% | Add +5.9% | 351,875 | $4.7M |
| Nokomis Capital, L.L.C. | 2.01% | Reduce -22.9% | 346,966 | $4.7M |
| Ancora Advisors LLC | 0.09% | Add +0.6% | 309,580 | $4.2M |
| Geode Capital Management, LLC | 0.00% | Add +4.8% | 290,769 | $3.9M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Add +5.5% | 266,400 | $3.6M |
| State Street Corp. | 0.00% | Add +1.0% | 252,369 | $3.4M |
| American Century Companies Inc. | 0.00% | Add +14.8% | 252,139 | $3.4M |
| JB Capital Partners LP | 0.71% | No change | 250,512 | $3.4M |
| Bank of America Corp. | 0.00% | Add +10.7% | 240,226 | $3.2M |
| Bridgeway Capital Management, LLC | 0.07% | Add +3.8% | 212,875 | $2.9M |
| Russell Investments Group, Ltd. | 0.00% | Reduce -7.2% | 200,312 | $2.7M |
| Osaic Holdings, Inc. | 0.00% | Add +10.9% | 144,870 | $1.9M |
| Citadel Advisors | 0.00% | Add +1056.4% | 143,747 | $1.9M |
| Jacobs Levy Equity Management, Inc. | 0.01% | Reduce -2.0% | 132,498 | $1.8M |
| Polar Asset Management Partners Inc. | 0.08% | Add +35.7% | 131,053 | $1.8M |
| Globeflex Capital L P | 0.14% | No change | 116,468 | $1.6M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -46.9% | 113,534 | $1.5M |
| Millennium Management | 0.00% | Add +270.3% | 112,350 | $1.5M |
| Marshall Wace, LLP | 0.00% | New | 101,372 | $1.4M |
| Anchor Capital Advisors LLC | 0.04% | Add +0.0% | 100,849 | $1.4M |
| Northern Trust Corp. | 0.00% | Reduce -1.4% | 99,909 | $1.3M |
| CenterBook Partners LP | 0.08% | New | 98,553 | $1.3M |
| Empowered Funds, LLC | 0.02% | Add +7.3% | 98,207 | $1.3M |
| Wealthspire Advisors, LLC | 0.01% | No change | 95,415 | $1.3M |
| Blair William & Co. | 0.00% | Reduce -53.4% | 92,250 | $1.2M |
| Renaissance Technologies | 0.00% | Reduce -23.8% | 85,900 | $1.2M |
| Squarepoint Ops LLC | 0.00% | Add +211.2% | 84,475 | $1.1M |
| AQR Capital Management | 0.00% | Reduce -2.6% | 69,809 | $938K |
| Expect Equity LLC | 0.82% | Reduce -27.0% | 54,574 | $733K |
| Nuveen, LLC | 0.00% | — | 47,917 | $644K |
| Jane Street Group, LLC | 0.00% | Add +158.6% | 47,194 | $634K |
| Sei Investments Co. | 0.00% | Reduce -6.5% | 45,387 | $610K |
| Martingale Asset Management L P | 0.02% | Add +6.2% | 44,815 | $602K |
| Sheets Smith Wealth Management | 0.06% | Add +3.8% | 37,905 | $509K |
| Bank of New York Mellon Corp | 0.00% | Reduce -3.0% | 37,102 | $498K |
| Ameriprise Financial Inc. | 0.00% | Reduce -67.3% | 36,689 | $493K |
| Janney Montgomery Scott LLC | 0.00% | Add +4.8% | 36,309 | $488K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 34,252 | $460K |
| STRS Ohio | 0.00% | No change | 33,500 | $450K |
| Invesco Ltd. | 0.00% | Reduce -9.0% | 32,768 | $440K |
| O'shaughnessy Asset Management, LLC | 0.00% | Reduce -26.1% | 30,577 | $411K |
| Perritt Capital Management Inc | 0.22% | No change | 30,000 | $403K |
| Barclays PLC | 0.00% | Reduce -22.3% | 29,637 | $398K |
| Morgan Stanley | 0.00% | Reduce -35.7% | 28,851 | $387K |
| Lazard Asset Management LLC | 0.00% | Add +37.0% | 28,573 | $383K |
| Envestnet Asset Management Inc. | 0.00% | Reduce -1.5% | 28,348 | $381K |
| Gsa Capital Partners LLP | 0.03% | Add +31.1% | 26,552 | $357K |
| UBS Group AG | 0.00% | Reduce -64.6% | 26,159 | $351K |
| ExodusPoint Capital Management, LP | 0.00% | New | 26,116 | $351K |
| LPL Financial LLC | 0.00% | Reduce -27.0% | 24,846 | $334K |
| Susquehanna International Group, LLP | 0.00% | Add +34.9% | 23,737 | $319K |
| Avior Wealth Management, LLC | 0.01% | No change | 22,919 | $308K |
| Gradient Investments LLC | 0.01% | No change | 22,444 | $301K |
| Qube Research & Technologies Ltd | 0.00% | New | 21,580 | $290K |
| Rhumbline Advisers | 0.00% | Reduce -3.9% | 18,443 | $248K |
| Royal Bank of Canada | 0.00% | Reduce -5.2% | 18,105 | $243K |
| State of Wyoming | 0.03% | Add +190.2% | 18,078 | $243K |
| EntryPoint Capital, LLC | 0.10% | New | 16,491 | $221K |
| SeaBridge Investment Advisors LLC | 0.05% | New | 16,345 | $220K |
| Franklin Resources Inc. | 0.00% | No change | 15,859 | $213K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +29.1% | 15,791 | $212K |
| Sterling Capital Management LLC | 0.00% | Reduce -11.1% | 15,686 | $211K |
| Raymond James Financial Inc. | 0.00% | Reduce -9.9% | 15,421 | $207K |
| Principal Financial Group Inc. | 0.00% | Add +2.4% | 14,873 | $200K |
| State of Wisconsin Investment Board | 0.00% | Add +4.2% | 14,797 | $199K |
| Mesirow Financial Investment Management, Inc. | 0.00% | No change | 15,682 | $197K |
| Wells Fargo & Company | 0.00% | Reduce -43.0% | 13,911 | $187K |
| Graham Capital Management, L.P. | 0.01% | New | 13,431 | $180K |
| Victory Capital Management Inc. | 0.00% | New | 13,385 | $180K |
| Ritholtz Wealth Management | 0.01% | Reduce -48.3% | 13,090 | $176K |
| Transatlantique Private Wealth LLC | 0.07% | New | 12,862 | $173K |
| Oppenheimer Asset Management Inc. | 0.00% | New | 11,348 | $152K |
| Engineers Gate Manager LP | 0.00% | Reduce -30.1% | 11,345 | $152K |
| Public Employees Retirement System of Ohio | 0.00% | Reduce -13.1% | 10,834 | $146K |
| Net Worth Advisory Group | 0.04% | Reduce -1.6% | 10,629 | $143K |
| Delta Capital Management LLC | 0.08% | Reduce -2.2% | 10,380 | $139K |
| Deutsche Bank AG | 0.00% | Reduce -15.8% | 10,207 | $137K |
| Citigroup Inc. | 0.00% | Reduce -8.7% | 9,656 | $130K |
| AlphaQuest LLC | 0.01% | Add +222.8% | 7,879 | $106K |
| Harbour Investments, Inc. | 0.00% | No change | 7,700 | $103K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +4.3% | 7,602 | $102K |
| JPMorgan Chase & Co. | 0.00% | Add +6.9% | 6,577 | $88K |
| MetLife Investment Management, LLC | 0.00% | No change | 6,477 | $87K |
| Corebridge Financial, Inc. | 0.00% | Reduce -1.4% | 6,310 | $85K |
| Aquatic Capital Management LLC | 0.00% | Add +123.4% | 6,194 | $83K |
| New York State Common Retirement Fund | 0.00% | No change | 5,395 | $72K |
| BNP Paribas Financial Markets | 0.00% | Reduce -42.8% | 4,959 | $67K |
| FMR LLC | 0.00% | Reduce -1.4% | 3,100 | $42K |
| US Bancorp \de | 0.00% | No change | 2,853 | $38K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 2,557 | $34K |
| Legal & General Group Plc | 0.00% | No change | 1,260 | $17K |
| New York State Teachers Retirement System | 0.00% | No change | 1,161 | $16K |
| Avion Wealth | 0.00% | No change | 1,000 | $15K |
| California State Teachers Retirement System | 0.00% | No change | 922 | $12K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 912 | $12K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -40.1% | 887 | $12K |
| Abound Wealth Management | 0.00% | New | 561 | $8K |
| Comerica Bank | 0.00% | Add +116.5% | 511 | $7K |
| Group One Trading LLC | 0.00% | No change | 400 | $5K |
| Amalgamated Bank | 0.00% | No change | 372 | $5K |
| GAMMA Investing LLC | 0.00% | Add +629.0% | 226 | $3K |
| Cwm, LLC | 0.00% | Add +143.2% | 214 | $3K |
| Nemes Rush Group LLC | 0.00% | No change | 200 | $3K |
| Northwestern Mutual Wealth Management Co. | 0.00% | New | 190 | $3K |
| Covestor Ltd | 0.00% | Add +170.0% | 54 | $1K |
| Vermillion Wealth Management, Inc. | 0.00% | No change | 30 | $403 |
| Nisa Investment Advisors, LLC | 0.00% | New | 29 | $389 |
| MAI Capital Management | 0.00% | No change | 25 | $336 |
| True Wealth Design, LLC | 0.00% | New | 13 | $175 |
"% of holder's portfolio" is MEC's weight in each manager's 13F, not the share of Mayville Engineering Co. Inc. the manager owns.