Mayville Engineering Company, Inc. - MEC

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
Allspring Global Investments Holdings, LLC History Reduced 2,000,350 35,846 0.06% 0.06% 1 -52,263 -2.55% Q1 2026 May 05, 2026
DIMENSIONAL FUND ADVISORS LP History Added to 926,216 16,624 0.0% 0.0% 2 +49,041 5.59% Q1 2026 May 07, 2026
BlackRock, Inc. History Added to 881,854 15,829 0.0% 0.0% 3 +16,235 1.88% Q1 2026 May 13, 2026
Portolan Capital Management, LLC History Added to 821,136 14,739 0.78% 0.51% 4 +308,374 60.14% Q1 2026 May 15, 2026
ROYCE & ASSOCIATES LP History Added to 751,001 13,480 0.13% 0.12% 5 +126,694 20.29% Q1 2026 May 12, 2026
VANGUARD GROUP INC History No change 627,655 11,749 0.0% 0.0% 6 0 0.0% Q4 2025 Jan 29, 2026
EVR Research LP History Added to 620,000 11,129 4.45% 6.11% 7 +15,000 2.48% Q1 2026 May 14, 2026
VANGUARD CAPITAL MANAGEMENT LLC History New 594,938 10,679 0.0% 8 +594,938 New Q1 2026 May 15, 2026
BLAIR WILLIAM & CO/IL History Reduced 565,300 10,147 0.03% 0.03% 9 -18,459 -3.16% Q1 2026 May 08, 2026
First Eagle Investment Management, LLC History Added to 404,075 7,253 0.01% 0.01% 10 +46,000 12.85% Q1 2026 May 14, 2026
Granahan Investment Management, LLC History Added to 387,470 6,955 0.34% 0.21% 11 +119,708 44.71% Q1 2026 May 15, 2026
MILLENNIUM MANAGEMENT LLC History Added to 380,972 6,838 0.0% 0.0% 12 +227,772 148.68% Q1 2026 May 15, 2026
AMERIPRISE FINANCIAL INC History Added to 351,790 6,314 0.0% 0.0% 13 +946 0.27% Q1 2026 May 15, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 335,835 6,029 0.0% 0.0% 14 +6,914 2.1% Q1 2026 May 15, 2026
STATE STREET CORP History Added to 285,850 5,131 0.0% 0.0% 15 +850 0.3% Q1 2026 May 15, 2026
SILVERCREST ASSET MANAGEMENT GROUP LLC History Added to 269,681 4,840 0.03% 0.02% 16 +89,740 49.87% Q1 2026 May 15, 2026
JB CAPITAL PARTNERS LP History No change 250,512 4,496 0.77% 0.81% 17 0 0.0% Q1 2026 May 14, 2026
Congruence Capital, LLC History Added to 234,475 4,208 1.41% 1.43% 18 +26,373 12.67% Q1 2026 May 14, 2026
Boston Partners History Added to 232,637 4,175 0.0% 0.0% 19 +9,907 4.45% Q1 2026 May 11, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History Reduced 222,703 3,997 0.08% 0.09% 20 -4,223 -1.86% Q1 2026 May 15, 2026
AMERICAN CENTURY COMPANIES INC History Reduced 221,673 3,979 0.0% 0.0% 21 -59,167 -21.07% Q1 2026 May 15, 2026
Roubaix Capital, LLC History Added to 210,657 3,781 1.76% 1.17% 22 +64,360 43.99% Q1 2026 May 06, 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP History Reduced 185,261 3,325 0.0% 0.0% 23 -103,189 -35.77% Q1 2026 May 14, 2026
BANK OF AMERICA CORP /DE/ History Reduced 183,599 3,295 0.0% 0.0% 24 -35,289 -16.12% Q1 2026 May 15, 2026
Wealthspire Advisors, LLC History Added to 141,607 2,541 0.02% 0.01% 25 +46,192 48.41% Q1 2026 May 01, 2026
Panoramic Capital, LLC History New 140,000 2,513 1.76% 26 +140,000 New Q1 2026 May 15, 2026
Russell Investments Group, Ltd. History Reduced 138,215 2,480 0.0% 0.0% 27 -51,766 -27.25% Q1 2026 May 08, 2026
Empowered Funds, LLC History New 123,293 2,213 0.01% 28 +123,293 New Q1 2026 May 14, 2026
SEI INVESTMENTS CO History Added to 122,878 2,205 0.0% 0.0% 29 +39,309 47.04% Q1 2026 May 13, 2026
CenterBook Partners LP History Reduced 120,303 2,159 0.12% 0.23% 30 -135,488 -52.97% Q1 2026 May 05, 2026
UBS Group AG History Reduced 116,571 2,092 0.0% 0.0% 31 -29,981 -20.46% Q1 2026 May 05, 2026
Squarepoint Ops LLC History New 110,569 1,984 0.0% 32 +110,569 New Q1 2026 May 15, 2026
KENNEDY CAPITAL MANAGEMENT LLC History Added to 106,791 1,916 0.04% 0.04% 33 +2,446 2.34% Q1 2026 May 13, 2026
NORTHERN TRUST CORP History Added to 100,384 1,801 0.0% 0.0% 34 +6,016 6.38% Q1 2026 May 14, 2026
FORMULA GROWTH LTD History Added to 100,000 1,795 0.81% 0.29% 35 +60,000 150.0% Q1 2026 May 14, 2026
OSAIC HOLDINGS, INC. History Reduced 99,104 1,778 0.0% 0.0% 36 -20,974 -17.47% Q1 2026 May 15, 2026
VANGUARD FIDUCIARY TRUST CO History New 91,044 1,634 0.0% 37 +91,044 New Q1 2026 May 08, 2026
ANCHOR CAPITAL ADVISORS LLC History Reduced 81,442 1,461 0.04% 0.06% 38 -26,876 -24.81% Q1 2026 May 12, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC History New 75,903 1,362 0.0% 39 +75,903 New Q1 2026 May 08, 2026
TOCQUEVILLE ASSET MANAGEMENT L.P. History No change 71,100 1,276 0.02% 0.02% 40 0 0.0% Q1 2026 May 12, 2026
GOLDMAN SACHS GROUP INC History Reduced 64,908 1,165 0.0% 0.0% 41 -24,839 -27.68% Q1 2026 May 15, 2026
RENAISSANCE TECHNOLOGIES LLC History Reduced 62,900 1,129 0.0% 0.0% 42 -8,300 -11.66% Q1 2026 May 14, 2026
CITADEL ADVISORS LLC History Reduced 56,786 1,019 0.0% 0.0% 43 -46,677 -45.11% Q1 2026 May 15, 2026
Integrated Quantitative Investments LLC History New 50,659 909 0.16% 44 +50,659 New Q1 2026 May 13, 2026
Nuveen, LLC History Reduced 47,418 851 0.0% 0.0% 45 -40,169 -45.86% Q1 2026 Apr 30, 2026
SummerHaven Investment Management, LLC History Reduced 45,325 813 0.5% 0.55% 46 -6,400 -12.37% Q1 2026 Apr 24, 2026
HighTower Advisors, LLC History New 44,587 800 0.0% 47 +44,587 New Q1 2026 May 05, 2026
JOURNEY STRATEGIC WEALTH LLC History Added to 44,206 793 0.02% 0.01% 48 +15,021 51.47% Q1 2026 Apr 15, 2026
XTX Topco Ltd History Added to 41,478 744 0.01% 0.01% 49 +20,144 94.42% Q1 2026 May 15, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Reduced 40,098 719 0.0% 0.0% 50 -3,357 -7.73% Q1 2026 May 15, 2026
Numerai GP LLC History New 39,755 713 0.07% 51 +39,755 New Q1 2026 May 15, 2026
SHEETS SMITH WEALTH MANAGEMENT History No change 38,975 699 0.08% 0.08% 52 0 0.0% Q1 2026 Apr 16, 2026
Bank of New York Mellon Corp History Reduced 38,851 697 0.0% 0.0% 53 -3,438 -8.13% Q1 2026 May 05, 2026
PANAGORA ASSET MANAGEMENT INC History Reduced 36,765 659 0.0% 0.0% 54 -17,829 -32.66% Q1 2026 May 14, 2026
Legato Capital Management LLC History New 35,698 640 0.06% 55 +35,698 New Q1 2026 May 14, 2026
TWO SIGMA INVESTMENTS, LP History New 34,708 623 0.0% 56 +34,708 New Q1 2026 May 15, 2026
STATE OF WISCONSIN INVESTMENT BOARD History Reduced 32,262 579 0.0% 0.0% 57 -8,435 -20.73% Q1 2026 May 15, 2026
Ancora Advisors LLC History Reduced 32,133 576 0.01% 0.05% 58 -93,897 -74.5% Q1 2026 May 15, 2026
Janney Montgomery Scott LLC History Reduced 31,305 562 0.0% 0.0% 59 -2,845 -8.33% Q1 2026 Apr 22, 2026
PERRITT CAPITAL MANAGEMENT INC History No change 30,000 561 0.94% 0.94% 60 0 0.0% Q4 2025 Feb 17, 2026
North Star Investment Management Corp. History New 30,000 538 0.03% 61 +30,000 New Q1 2026 Apr 23, 2026
Invesco Ltd. History Reduced 27,028 485 0.0% 0.0% 62 -842 -3.02% Q1 2026 May 12, 2026
O'SHAUGHNESSY ASSET MANAGEMENT, LLC History Reduced 26,370 473 0.0% 0.0% 63 -774 -2.85% Q1 2026 May 13, 2026
MORGAN STANLEY History Reduced 23,834 427 0.0% 0.0% 64 -58,556 -71.07% Q1 2026 May 15, 2026
LPL Financial LLC History Reduced 21,771 390 0.0% 0.0% 65 -17 -0.08% Q1 2026 May 06, 2026
AQR CAPITAL MANAGEMENT LLC History Reduced 20,383 365 0.0% 0.0% 66 -11,525 -36.12% Q1 2026 May 15, 2026
ENVESTNET ASSET MANAGEMENT INC History Reduced 20,301 364 0.0% 0.0% 67 -3,057 -13.09% Q1 2026 May 04, 2026
NEEDHAM INVESTMENT MANAGEMENT LLC History New 20,000 359 0.02% 68 +20,000 New Q1 2026 May 14, 2026
BARCLAYS PLC History Reduced 19,028 341 0.0% 0.0% 69 -17,997 -48.61% Q1 2026 May 14, 2026
SummitTX Capital, L.P. History Added to 18,696 335 0.01% 0.01% 70 +3,578 23.67% Q1 2026 May 15, 2026
RHUMBLINE ADVISERS History Added to 18,200 326 0.0% 0.0% 71 +168 0.93% Q1 2026 May 12, 2026
Gradient Investments LLC History Reduced 17,104 307 0.0% 0.01% 72 -3,800 -18.18% Q1 2026 Apr 13, 2026
Johnson Financial Group, Inc. History No change 16,475 295 0.01% 0.01% 73 0 0.0% Q1 2026 May 07, 2026
Worth Venture Partners, LLC History Added to 15,110 271 0.86% 1.86% 74 +1,375 10.01% Q1 2026 May 14, 2026
Avior Wealth Management, LLC History No change 14,919 267 0.01% 0.01% 75 0 0.0% Q1 2026 Apr 09, 2026
FRANKLIN RESOURCES INC History Added to 13,528 242 0.0% 0.0% 76 +70 0.52% Q1 2026 May 13, 2026
ALLIANCEBERNSTEIN L.P. History No change 12,810 239 0.0% 0.0% 77 0 0.0% Q1 2026 May 15, 2026
WELLS FARGO & COMPANY/MN History Reduced 12,569 225 0.0% 0.0% 78 -9,922 -44.12% Q1 2026 May 11, 2026
MIRABELLA FINANCIAL SERVICES LLP History New 12,430 223 0.02% 79 +12,430 New Q1 2026 May 12, 2026
Brevan Howard Capital Management LP History New 12,023 215 0.0% 80 +12,023 New Q1 2026 May 15, 2026
Heck Capital Advisors, LLC History New 11,494 206 0.02% 81 +11,494 New Q1 2026 Apr 16, 2026
AlphaQuest LLC History No change 10,954 205 0.01% 0.01% 82 0 0.0% Q4 2025 Feb 09, 2026
DEUTSCHE BANK AG\ History Added to 10,237 183 0.0% 0.0% 83 +1,988 24.1% Q1 2026 May 06, 2026
Aquatic Capital Management LLC History Added to 8,901 159 0.0% 0.0% 84 +4,518 103.08% Q1 2026 May 15, 2026
MetLife Investment Management, LLC History No change 7,958 142 0.0% 0.0% 85 0 0.0% Q1 2026 May 14, 2026
HARBOR CAPITAL ADVISORS, INC. History New 7,785 140 0.01% 86 +7,785 New Q1 2026 Apr 28, 2026
HARBOUR INVESTMENTS, INC. History No change 7,700 138 0.0% 0.0% 87 0 0.0% Q1 2026 May 15, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Added to 6,241 112 0.0% 0.0% 88 +136 2.23% Q1 2026 May 15, 2026
JONES FINANCIAL COMPANIES LLLP History Added to 6,181 109 0.0% 0.0% 89 +3,252 111.03% Q1 2026 May 15, 2026
Vanguard Global Advisers, LLC History New 5,936 106 0.0% 90 +5,936 New Q1 2026 May 08, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 5,395 96 0.0% 0.0% 91 0 0.0% Q1 2026 May 06, 2026
JPMORGAN CHASE & CO History Reduced 5,481 95 0.0% 0.0% 92 -72 -1.3% Q1 2026 May 13, 2026
Police & Firemen's Retirement System of New Jersey History No change 4,651 83 0.0% 0.0% 93 0 0.0% Q1 2026 Apr 29, 2026
FMR LLC History Added to 4,261 76 0.0% 0.0% 94 +932 28.0% Q1 2026 May 15, 2026
State of Alaska, Department of Revenue History No change 3,903 70 0.0% 0.0% 95 0 0.0% Q1 2026 Apr 20, 2026
ROYAL BANK OF CANADA History Reduced 3,447 62 0.0% 0.0% 96 -337 -8.91% Q1 2026 May 15, 2026
BNP PARIBAS FINANCIAL MARKETS History Reduced 2,798 50 0.0% 0.0% 97 -157 -5.31% Q1 2026 May 12, 2026
CITIGROUP INC History Added to 1,637 29 0.0% 0.0% 98 +246 17.69% Q1 2026 May 11, 2026
Ameritas Investment Partners, Inc. History No change 1,454 26 0.0% 0.0% 99 0 0.0% Q1 2026 May 13, 2026
Tower Research Capital LLC (TRC) History Added to 1,281 22 0.0% 0.0% 101 +191 17.52% Q1 2026 May 15, 2026
Legal & General Group Plc History No change 1,260 22 0.0% 0.0% 100 0 0.0% Q1 2026 May 08, 2026
Avion Wealth History No change 1,000 17 0.0% 0.0% 102 0 0.0% Q1 2026 May 01, 2026
CWM, LLC History Added to 922 16 0.0% 0.0% 103 +21 2.33% Q1 2026 May 14, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Reduced 708 12 0.0% 0.0% 104 -97 -12.05% Q1 2026 May 15, 2026
Sterling Capital Management LLC History Reduced 401 7 0.0% 0.0% 106 -15,770 -97.52% Q1 2026 Apr 22, 2026
MAI Capital Management History Added to 414 7 0.0% 0.0% 105 +273 193.62% Q1 2026 May 15, 2026
COMERICA BANK History No change 358 6 0.0% 0.0% 107 0 0.0% Q4 2025 Jan 29, 2026
Rockefeller Capital Management L.P. History Reduced 276 4 0.0% 0.0% 109 -307 -52.66% Q1 2026 May 14, 2026
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC History Added to 229 4 0.0% 108 +182 387.23% Q1 2026 May 13, 2026
GAMMA Investing LLC History No change 174 3 0.0% 0.0% 110 0 0.0% Q1 2026 Apr 06, 2026
FIFTH THIRD BANCORP History New 118 2 0.0% 112 +118 New Q1 2026 May 01, 2026
Advisory Services Network, LLC History New 115 2 0.0% 113 +115 New Q1 2026 May 15, 2026
Optiver Holding B.V. History Reduced 124 2 0.0% 0.0% 111 -112 -47.46% Q1 2026 May 15, 2026
Annis Gardner Whiting Capital Advisors, LLC History New 80 1 0.0% 115 +80 New Q1 2026 May 06, 2026
Allworth Financial LP History No change 58 1 0.0% 0.0% 114 0 0.0% Q1 2026 May 14, 2026
22NW, LP History Closed out 0 0 3.26% -414,280 -100.0% Q1 2026 May 15, 2026
JANE STREET GROUP, LLC History Closed out 0 0 0.0% -98,874 -100.0% Q1 2026 May 12, 2026
RAYMOND JAMES FINANCIAL INC History Closed out 0 0 0.0% -38,672 -100.0% Q1 2026 May 14, 2026
JACOBS LEVY EQUITY MANAGEMENT, INC History Closed out 0 0 0.0% -31,868 -100.0% Q1 2026 May 15, 2026
Rothschild Wealth LLC History Closed out 0 0 0.05% -30,000 -100.0% Q1 2026 May 06, 2026
D. E. Shaw & Co., Inc. History Closed out 0 0 0.0% -19,416 -100.0% Q1 2026 May 15, 2026
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC History Closed out 0 0 0.0% -13,792 -100.0% Q1 2026 Apr 08, 2026
HRT FINANCIAL LP History Closed out 0 0 0.0% -12,933 -100.0% Q1 2026 May 14, 2026
BOOTHBAY FUND MANAGEMENT, LLC History Closed out 0 0 0.0% -12,160 -100.0% Q1 2026 May 15, 2026
ExodusPoint Capital Management, LP History Closed out 0 0 0.0% -11,316 -100.0% Q1 2026 May 14, 2026
Quantbot Technologies LP History Closed out 0 0 0.0% -7,827 -100.0% Q1 2026 May 13, 2026
PICTON MAHONEY ASSET MANAGEMENT History Closed out 0 0 0.0% -5,800 -100.0% Q1 2026 May 13, 2026
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO History Closed out 0 0 0.0% -2,189 -100.0% Q1 2026 May 14, 2026
Clearstead Advisors, LLC History Closed out 0 0 0.0% -2,094 -100.0% Q1 2026 May 06, 2026
Quarry LP History Closed out 0 0 0.0% -659 -100.0% Q1 2026 May 15, 2026
AMALGAMATED BANK History Closed out 0 0 0.0% -411 -100.0% Q1 2026 May 08, 2026
US BANCORP \DE\ History Reduced 11 0 0.0% -274 -96.14% Q1 2026 May 14, 2026
BAYBAN History New 43 0 +43 New Q1 2026 Apr 24, 2026
Torren Management, LLC History Closed out 0 0 -26 -100.0% Q1 2026 Apr 30, 2026
Farther Finance Advisors, LLC History New 14 0 +14 New Q1 2026 Apr 07, 2026
Covestor Ltd History Closed out 0 0 -11 -100.0% Q1 2026 May 05, 2026
PNC FINANCIAL SERVICES GROUP, INC. History Added to 20 0 +7 53.85% Q1 2026 May 08, 2026
Root Financial Partners, LLC History New 5 0 +5 New Q1 2026 Apr 24, 2026
Arax Advisory Partners History Closed out 0 0 -2 -100.0% Q1 2026 May 13, 2026
NISA INVESTMENT ADVISORS, LLC History No change 26 0 0 0.0% Q1 2026 Apr 30, 2026
Parkside Financial Bank & Trust History No change 35 0 0 0.0% Q1 2026 May 13, 2026
EverSource Wealth Advisors, LLC History No change 25 0 0 0.0% Q1 2026 May 15, 2026
Vermillion Wealth Management, Inc. History No change 30 0 0 0.0% Q1 2026 Apr 17, 2026
True Wealth Design, LLC History No change 9 0 0 0.0% Q1 2026 Apr 13, 2026
Bare Financial Services, Inc History No change 37 0 0 0.0% Q1 2026 May 14, 2026
Essential Partners LLC History No change 14 0 0 0.0% Q1 2026 May 21, 2026