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 $807.5M 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
- 21.6M
- +7.27M (+50.7%) vs. Q1 2026
- Total value
- $807.5M
- +$549.9M (+213.4%) vs. Q1 2026
- New holders
- 53
- 47 more added
- Sold out
- 20
- 37 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 | $807.5M |
| Q1 2026 | 124 | $258.4M |
| Q4 2025 | 123 | $260.4M |
| Q3 2025 | 104 | $183.6M |
| Q2 2025 | 113 | $203.0M |
| Q1 2025 | 117 | $167.8M |
| Q4 2024 | 115 | $195.4M |
| Q3 2024 | 116 | $246.4M |
| Q2 2024 | 97 | $179.2M |
| Q1 2024 | 81 | $138.4M |
| Q4 2023 | 79 | $133.9M |
| 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 | $108.7M |
| 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 |
|---|---|---|---|---|---|
| Portolan Capital Management, LLC | 1,299,256 | $48.7M | 1.82% | +478,120+58.2% | Added |
| FMR LLC | 1,280,170 | $48.0M | 0.00% | +1,275,909+29,943.9% | Added |
| BlackRock, Inc. | 1,183,443 | $44.3M | 0.00% | +301,589+34.2% | Added |
| Allspring Global Investments Holdings, LLC | 1,072,916 | $37.8M | 0.06% | −927,434−46.4% | Reduced |
| Driehaus Capital Management LLC | 846,354 | $31.7M | 0.18% | +846,354 | New |
| Summit Partners Public Asset Management, LLC | 800,000 | $30.0M | 0.78% | +800,000 | New |
| Dimensional Fund Advisors LP | 782,276 | $29.3M | 0.01% | −143,940−15.5% | Reduced |
| Royce & Associates LP | 752,083 | $28.2M | 0.23% | +1,082+0.1% | Added |
| Vanguard Capital Management LLC | 743,621 | $27.9M | 0.00% | +148,683+25.0% | Added |
| First Eagle Investment Management, LLC | 739,150 | $27.7M | 0.02% | +335,075+82.9% | Added |
| Boston Partners | 696,429 | $25.8M | 0.02% | +463,792+199.4% | Added |
| Jupiter Topco LLC | 575,278 | $21.5M | 0.01% | +575,278 | New |
| Blair William & Co | 546,714 | $20.5M | 0.05% | −18,586−3.3% | Reduced |
| Wellington Management Group LLP | 477,583 | $17.9M | 0.00% | +477,583 | New |
| EVR Research LP | 441,908 | $16.6M | 8.17% | −178,092−28.7% | Reduced |
| Geode Capital Management, LLC | 374,578 | $14.0M | 0.00% | +38,743+11.5% | Added |
| Jane Street Group, LLC | 356,151 | $13.3M | 0.01% | +356,151 | New |
| JPMorgan Chase & Co | 347,224 | $13.0M | 0.00% | +341,743+6,235.0% | Added |
| Kennedy Capital Management, Inc. | 336,377 | $12.6M | 0.22% | +229,586+215.0% | Added |
| Ophir Asset Management Pty Ltd | 326,699 | $12.2M | 1.01% | +326,699 | New |
| Granahan Investment Management Inc | 324,108 | $12.1M | 0.43% | −63,362−16.4% | Reduced |
| Silvercrest Asset Management Group LLC | 313,943 | $11.8M | 0.08% | +44,262+16.4% | Added |
| State Street Corp | 291,168 | $10.9M | 0.00% | +5,318+1.9% | Added |
| Nuveen, LLC | 281,914 | $10.6M | 0.00% | +234,496+494.5% | Added |
| Bank of America Corp | 276,317 | $10.4M | 0.00% | +92,718+50.5% | Added |
| Millennium Management LLC | 253,677 | $9.50M | 0.01% | −127,295−33.4% | Reduced |
| JB Capital Partners LP | 250,512 | $9.38M | 1.45% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 238,766 | $8.94M | 0.02% | +128,197+115.9% | Added |
| Congruence Capital, LLC | 235,580 | $8.82M | 2.31% | +1,105+0.5% | Added |
| Bridgeway Capital Management, LLC | 200,980 | $7.53M | 0.13% | −21,723−9.8% | Reduced |
| Two Sigma Investments, LP | 198,912 | $7.45M | 0.01% | +164,204+473.1% | Added |
| Citadel Advisors LLC | 198,712 | $7.44M | 0.00% | +141,926+249.9% | Added |
| AWM Investment Company, Inc. | 180,000 | $6.74M | 0.59% | +180,000 | New |
| Osterweis Capital Management Inc | 174,600 | $6.54M | 0.31% | +174,600 | New |
| Tudor Investment Corp Et Al | 169,848 | $6.36M | 0.03% | +169,848 | New |
| Anchor Capital Advisors LLC | 161,768 | $6.06M | 0.09% | +80,326+98.6% | Added |
| Lord, Abbett & Co. LLC | 152,175 | $5.70M | 0.02% | +152,175 | New |
| Wealthspire Advisors, LLC | 141,607 | $5.30M | 0.03% | 00.0% | Unchanged |
| Pillsbury Lake Capital LLC | 136,746 | $5.12M | 1.41% | +136,746 | New |
| EAM Investors, LLC | 129,182 | $4.84M | 0.43% | +129,182 | New |
| Russell Investments Group, Ltd. | 125,513 | $4.70M | 0.00% | −12,702−9.2% | Reduced |
| SEI Investments Co | 118,607 | $4.44M | 0.00% | −4,271−3.5% | Reduced |
| Empowered Funds, LLC | 116,570 | $4.37M | 0.02% | −6,723−5.5% | Reduced |
| Northern Trust Corp | 114,995 | $4.31M | 0.00% | +14,611+14.6% | Added |
| BNP Paribas Arbitrage, SA | 112,455 | $4.21M | 0.00% | +109,657+3,919.1% | Added |
| Needham Investment Management LLC | 110,000 | $4.12M | 0.12% | +90,000+450.0% | Added |
| Hunter Associates Investment Management LLC | 107,528 | $4.03M | 0.46% | +107,528 | New |
| Trexquant Investment LP | 100,517 | $3.77M | 0.02% | +100,517 | New |
| Morgan Stanley | 100,159 | $3.75M | 0.00% | +76,325+320.2% | Added |
| Vanguard Fiduciary Trust Co | 98,709 | $3.70M | 0.00% | +7,665+8.4% | Added |
| Vanguard Portfolio Management LLC | 98,263 | $3.68M | 0.00% | +22,360+29.5% | Added |
| Walleye Capital LLC | 93,444 | $3.50M | 0.02% | +93,444 | New |
| Qube Research & Technologies Ltd | 87,129 | $3.26M | 0.00% | +87,129 | New |
| Susquehanna International Group, LLP | 85,462 | $3.20M | 0.00% | +85,462 | New |
| UBS Group AG | 82,662 | $3.10M | 0.00% | −33,909−29.1% | Reduced |
| Invesco Ltd. | 75,331 | $2.82M | 0.00% | +48,303+178.7% | Added |
| Formula Growth Ltd | 75,000 | $2.81M | 0.99% | −25,000−25.0% | Reduced |
| Tocqueville Asset Management L.P. | 71,100 | $2.66M | 0.04% | 00.0% | Unchanged |
| Panoramic Capital, LLC | 70,000 | $2.62M | 1.13% | −70,000−50.0% | Reduced |
| XTX Topco Ltd | 65,604 | $2.46M | 0.03% | +24,126+58.2% | Added |
| Polen Capital Management LLC | 61,827 | $2.32M | 0.02% | +61,827 | New |
| Essential Investment Partners LLC | 58,886 | $2.21M | 1.77% | +19,247+48.6% | Added |
| Citigroup Inc | 52,620 | $1.97M | 0.00% | +50,983+3,114.4% | Added |
| Goldman Sachs Group Inc | 51,990 | $1.95M | 0.00% | −12,918−19.9% | Reduced |
| American Century Companies Inc | 48,211 | $1.81M | 0.00% | −173,462−78.3% | Reduced |
| Balyasny Asset Management LLC | 47,052 | $1.76M | 0.00% | +47,052 | New |
| Charles Schwab Investment Management Inc | 45,861 | $1.72M | 0.00% | +5,763+14.4% | Added |
| SummerHaven Investment Management, LLC | 45,325 | $1.70M | 0.91% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 44,873 | $1.68M | 0.00% | +6,022+15.5% | Added |
| GatePass Capital, LLC | 40,000 | $1.50M | 0.57% | +40,000 | New |
| Advisor Group Holdings, Inc. | 39,614 | $1.48M | 0.00% | −59,490−60.0% | Reduced |
| Sheets Smith Wealth Management | 37,897 | $1.42M | 0.14% | −1,078−2.8% | Reduced |
| Diametric Capital, LP | 35,727 | $1.34M | 0.14% | +35,727 | New |
| Aquatic Capital Management LLC | 31,731 | $1.19M | 0.04% | +22,830+256.5% | Added |
| Janney Montgomery Scott LLC | 31,304 | $1.17M | 0.00% | −10.0% | Reduced |
| CenterBook Partners LP | 30,992 | $1.16M | 0.06% | −89,311−74.2% | Reduced |
| Boothbay Fund Management, LLC | 30,584 | $1.15M | 0.02% | +30,584 | New |
| North Star Investment Management Corp. | 30,000 | $1.12M | 0.06% | 00.0% | Unchanged |
| Kornitzer Capital Management Inc | 29,587 | $1.11M | 0.02% | +29,587 | New |
| Harbor Capital Advisors, Inc. | 28,625 | $1.07M | 0.07% | +20,840+267.7% | Added |
| Renaissance Technologies LLC | 28,000 | $1.05M | 0.00% | −34,900−55.5% | Reduced |
| Divisadero Street Capital Management, LP | 27,482 | $1.03M | 0.02% | +27,482 | New |
| Quadrature Capital Ltd | 26,477 | $991.8K | 0.01% | +26,477 | New |
| Johnson Financial Group, Inc. | 26,000 | $974.0K | 0.03% | +9,525+57.8% | Added |
| Prelude Capital Management, LLC | 23,969 | $897.9K | 0.07% | +23,969 | New |
| LPL Financial LLC | 22,172 | $830.6K | 0.00% | +401+1.8% | Added |
| O'Shaughnessy Asset Management, LLC | 21,785 | $816.1K | 0.00% | −4,585−17.4% | Reduced |
| HRT Financial LP | 21,568 | $807.0K | 0.00% | +21,568 | New |
| Wells Fargo & Company | 20,300 | $760.4K | 0.00% | +7,731+61.5% | Added |
| Rhumbline Advisers | 20,001 | $749.2K | 0.00% | +1,801+9.9% | Added |
| Envestnet Asset Management Inc | 18,920 | $708.7K | 0.00% | −1,381−6.8% | Reduced |
| AQR Capital Management LLC | 18,224 | $682.7K | 0.00% | −2,159−10.6% | Reduced |
| State of Wisconsin Investment Board | 18,171 | $680.7K | 0.00% | −14,091−43.7% | Reduced |
| Wesbanco Bank Inc | 18,000 | $674.3K | 0.02% | +18,000 | New |
| Deutsche Bank AG | 14,278 | $534.9K | 0.00% | +4,041+39.5% | Added |
| Caption Management, LLC | 14,092 | $527.9K | 0.02% | +14,092 | New |
| Franklin Resources Inc | 12,816 | $480.1K | 0.00% | −712−5.3% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 13,946 | $470.3K | 0.00% | +13,946 | New |
| Numerai GP LLC | 12,410 | $464.9K | 0.04% | −27,345−68.8% | Reduced |
| Creative Planning | 12,159 | $455.5K | 0.00% | +12,159 | New |