Mayville Engineering Company, Inc.
MEC- Exchange
- NYSE
- Industry
- Metal Forgings & Stampings
- SEC CIK
- 0001766368
In the last 90 days, Mayville Engineering Company, Inc. insiders filed 0 open-market purchases and 1 sale; 155 institutions reported holding it in 13F filings for Q2 2026, worth $790.6M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Mayville Engineering Company, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 155
- +33 vs. Q1 2026
- Shares held
- 21.2M
- +6.82M (+47.5%) vs. Q1 2026
- Total value
- $790.6M
- +$533.0M (+206.9%) vs. Q1 2026
- New holders
- 53
- 45 more added
- Sold out
- 20
- 39 more reduced
2 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MEC on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 155 | $790.6M |
| Q1 2026 | 124 | $258.4M |
| Q4 2025 | 123 | $260.4M |
| Q3 2025 | 104 | $183.6M |
| Q2 2025 | 113 | $202.5M |
| Q1 2025 | 117 | $167.8M |
| Q4 2024 | 115 | $195.4M |
| Q3 2024 | 116 | $246.3M |
| Q2 2024 | 97 | $179.1M |
| Q1 2024 | 81 | $136.6M |
| Q4 2023 | 79 | $133.4M |
| Q3 2023 | 86 | $97.8M |
| Q2 2023 | 86 | $108.7M |
| Q1 2023 | 77 | $116.8M |
| Q4 2022 | 69 | $88.5M |
| Q3 2022 | 59 | $41.3M |
| Q2 2022 | 64 | $55.6M |
| Q1 2022 | 65 | $70.0M |
| Q4 2021 | 69 | $108.4M |
| Q3 2021 | 78 | $141.2M |
| Q2 2021 | 58 | $164.5M |
| Q1 2021 | 59 | $106.9M |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Mayville Engineering Company, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Anchor Capital Advisors LLC | 80,884 | $3.03M | 0.09% | −558−0.7% | Reduced |
| UBS Group AG | 82,662 | $3.10M | 0.00% | −33,909−29.1% | Reduced |
| Susquehanna International Group, LLP | 85,462 | $3.20M | 0.00% | +85,462 | New |
| Qube Research & Technologies Ltd | 87,129 | $3.26M | 0.00% | +87,129 | New |
| Walleye Capital LLC | 93,444 | $3.50M | 0.02% | +93,444 | New |
| Vanguard Portfolio Management LLC | 98,263 | $3.68M | 0.00% | +22,360+29.5% | Added |
| Vanguard Fiduciary Trust Co | 98,709 | $3.70M | 0.00% | +7,665+8.4% | Added |
| Morgan Stanley | 100,159 | $3.75M | 0.00% | +76,325+320.2% | Added |
| Trexquant Investment LP | 100,517 | $3.77M | 0.02% | +100,517 | New |
| Hunter Associates Investment Management LLC | 107,528 | $4.03M | 0.46% | +107,528 | New |
| Needham Investment Management LLC | 110,000 | $4.12M | 0.12% | +90,000+450.0% | Added |
| BNP Paribas Arbitrage, SA | 112,455 | $4.21M | 0.00% | +109,657+3,919.1% | Added |
| Northern Trust Corp | 114,995 | $4.31M | 0.00% | +14,611+14.6% | Added |
| Empowered Funds, LLC | 116,570 | $4.37M | 0.02% | −6,723−5.5% | Reduced |
| SEI Investments Co | 118,607 | $4.44M | 0.00% | −4,271−3.5% | Reduced |
| Russell Investments Group, Ltd. | 125,513 | $4.70M | 0.00% | −12,702−9.2% | Reduced |
| EAM Investors, LLC | 129,182 | $4.84M | 0.43% | +129,182 | New |
| Pillsbury Lake Capital LLC | 136,746 | $5.12M | 1.41% | +136,746 | New |
| Wealthspire Advisors, LLC | 141,607 | $5.30M | 0.03% | 00.0% | Unchanged |
| Lord, Abbett & Co. LLC | 152,175 | $5.70M | 0.02% | +152,175 | New |
| Tudor Investment Corp Et Al | 169,848 | $6.36M | 0.03% | +169,848 | New |
| Osterweis Capital Management Inc | 174,600 | $6.54M | 0.31% | +174,600 | New |
| AWM Investment Company, Inc. | 180,000 | $6.74M | 0.59% | +180,000 | New |
| Citadel Advisors LLC | 198,712 | $7.44M | 0.00% | +141,926+249.9% | Added |
| Two Sigma Investments, LP | 198,912 | $7.45M | 0.01% | +164,204+473.1% | Added |
| Bridgeway Capital Management, LLC | 200,980 | $7.53M | 0.13% | −21,723−9.8% | Reduced |
| Congruence Capital, LLC | 235,580 | $8.82M | 2.31% | +1,105+0.5% | Added |
| Squarepoint Ops LLC | 238,766 | $8.94M | 0.02% | +128,197+115.9% | Added |
| JB Capital Partners LP | 250,512 | $9.38M | 1.45% | 00.0% | Unchanged |
| Millennium Management LLC | 253,677 | $9.50M | 0.01% | −127,295−33.4% | Reduced |
| Bank of America Corp | 276,317 | $10.4M | 0.00% | +92,718+50.5% | Added |
| Nuveen, LLC | 281,914 | $10.6M | 0.00% | +234,496+494.5% | Added |
| State Street Corp | 291,168 | $10.9M | 0.00% | +5,318+1.9% | Added |
| Silvercrest Asset Management Group LLC | 313,943 | $11.8M | 0.08% | +44,262+16.4% | Added |
| Granahan Investment Management Inc | 324,108 | $12.1M | 0.43% | −63,362−16.4% | Reduced |
| Ophir Asset Management Pty Ltd | 326,699 | $12.2M | 1.01% | +326,699 | New |
| Kennedy Capital Management, Inc. | 336,377 | $12.6M | 0.22% | +229,586+215.0% | Added |
| JPMorgan Chase & Co | 347,224 | $13.0M | 0.00% | +341,743+6,235.0% | Added |
| Jane Street Group, LLC | 356,151 | $13.3M | 0.01% | +356,151 | New |
| First Eagle Investment Management, LLC | 369,575 | $13.8M | 0.02% | −34,500−8.5% | Reduced |
| Geode Capital Management, LLC | 374,578 | $14.0M | 0.00% | +38,743+11.5% | Added |
| EVR Research LP | 441,908 | $16.6M | 8.17% | −178,092−28.7% | Reduced |
| Wellington Management Group LLP | 477,583 | $17.9M | 0.00% | +477,583 | New |
| Blair William & Co | 546,714 | $20.5M | 0.05% | −18,586−3.3% | Reduced |
| Jupiter Topco LLC | 575,278 | $21.5M | 0.01% | +575,278 | New |
| Boston Partners | 696,429 | $25.8M | 0.02% | +463,792+199.4% | Added |
| Vanguard Capital Management LLC | 743,621 | $27.9M | 0.00% | +148,683+25.0% | Added |
| Royce & Associates LP | 752,083 | $28.2M | 0.23% | +1,082+0.1% | Added |
| Dimensional Fund Advisors LP | 782,276 | $29.3M | 0.01% | −143,940−15.5% | Reduced |
| Summit Partners Public Asset Management, LLC | 800,000 | $30.0M | 0.78% | +800,000 | New |
| Driehaus Capital Management LLC | 846,354 | $31.7M | 0.18% | +846,354 | New |
| Allspring Global Investments Holdings, LLC | 1,072,916 | $37.8M | 0.06% | −927,434−46.4% | Reduced |
| BlackRock, Inc. | 1,183,443 | $44.3M | 0.00% | +301,589+34.2% | Added |
| FMR LLC | 1,280,170 | $48.0M | 0.00% | +1,275,909+29,943.9% | Added |
| Portolan Capital Management, LLC | 1,299,256 | $48.7M | 1.82% | +478,120+58.2% | Added |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −351,790−100.0% | Sold out |
| Roubaix Capital, LLC | 0 | $0 | 0.00% | −210,657−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −185,261−100.0% | Sold out |
| Integrated Quantitative Investments LLC | 0 | $0 | 0.00% | −50,659−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −44,587−100.0% | Sold out |
| Panagora Asset Management Inc | 0 | $0 | 0.00% | −36,765−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −35,698−100.0% | Sold out |
| Ancora Advisors, LLC | 0 | $0 | 0.00% | −32,133−100.0% | Sold out |
| SummitTX Capital, L.P. | 0 | $0 | 0.00% | −18,696−100.0% | Sold out |
| Gradient Investments LLC | 0 | $0 | 0.00% | −17,104−100.0% | Sold out |
| Alliancebernstein L.P. | 0 | $0 | 0.00% | −12,810−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −12,430−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −414−100.0% | Sold out |
| Optiver Holding B.V. | 0 | $0 | 0.00% | −124−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −115−100.0% | Sold out |
| Annis Gardner Whiting Capital Advisors, LLC | 0 | $0 | 0.00% | −80−100.0% | Sold out |
| Bayban | 0 | $0 | 0.00% | −43−100.0% | Sold out |
| Vermillion Wealth Management, Inc. | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −9−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Journey Strategic Wealth LLC | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |