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Disclosery

MEC MAYVILLE ENGR CO INC

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COMMON STOCK (common), issuer CIK 1766368

118 managers (118 13F filers) reported a position in MEC shares at 2025-03-31, 12,437,195 shares in all. 14 filers opened a position and 12 filers sold out during the quarter.

Managers
118
13F filers
118
New
14
Added
38
Reduced
38
Sold out
12
Shares held by filers
12,437,195

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2025

Filers in the available 13F reports with a share position at 2025-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Allspring Global Investments Holdings, …in group Allspring Global Investments …2,441,077$33.6M0.06%+1,48113F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.849,591$11.4M<0.01%+83413F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP772,568$10.4M<0.01%+67,90913F-HRTimelineGroup
TOCQUEVILLE ASSET MANAGEMENT L.P.in group TOCQUEVILLE ASSET MANAGEMENT …621,204$8.34M0.14%-8,51013F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC616,146$8.27M<0.01%-17,60613F-HRTimelineGroup
ROYCE & ASSOCIATES LP591,319$7.94M0.09%+7,02213F-HRTimeline
Granahan Investment Management, LLC478,038$6.42M0.32%-100,92913F-HRTimeline
First Eagle Investment Management, LLCin group First Eagle Investment Manage…351,875$4.73M0.01%+19,50013F-HRTimelineGroup
Nokomis Capital, L.L.C.346,966$4.66M2.01%-102,82613F-HRTimeline
Ancora Advisors LLCin group Ancora Advisors LLC309,580$4.16M0.09%+1,79113F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC290,769$3.91M<0.01%+13,32013F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …266,400$3.58M<0.01%+14,00413F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP252,369$3.39M<0.01%+2,40013F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC252,139$3.39M<0.01%+32,42613F-HRTimelineGroup
JB CAPITAL PARTNERS LP250,512$3.36M0.71%013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/240,226$3.23M<0.01%+23,30013F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC212,875$2.86M0.07%+7,79413F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…200,312$2.69M<0.01%-15,47113F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.144,870$1.95M<0.01%+14,20313F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC143,747$1.93M<0.01%+131,31613F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC132,498$1.78M0.01%-2,69513F-HRTimeline
Polar Asset Management Partners Inc.131,053$1.76M0.06%+34,50013F-HRTimeline
GLOBEFLEX CAPITAL L P116,468$1.56M0.14%013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC113,534$1.52M<0.01%-100,22413F-HR/ATimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC112,350$1.51M<0.01%+82,00613F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP101,372$1.36M<0.01%new13F-HRTimelineGroup
ANCHOR CAPITAL ADVISORS LLC100,849$1.35M0.04%+4413F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP99,909$1.34M<0.01%-1,42513F-HRTimelineGroup
CenterBook Partners LP98,553$1.32M0.08%new13F-HRTimeline
Empowered Funds, LLC98,207$1.32M0.02%+6,69413F-HRTimeline
Wealthspire Advisors, LLC95,415$1.28M0.01%013F-HRTimeline
BLAIR WILLIAM & CO/IL92,250$1.24M<0.01%-105,49013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC85,900$1.15M<0.01%-26,80013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC84,475$1.13M<0.01%+57,32913F-HR/ATimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC69,809$938K<0.01%-1,83413F-HRTimelineGroup
Expect Equity LLC54,574$733K0.82%-20,17013F-HRTimeline
Nuveen, LLCin group TIAA47,917$644K<0.01%13F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC47,194$634K<0.01%+28,94613F-HR/ATimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO45,387$610K<0.01%-3,18313F-HR/ATimelineGroup
MARTINGALE ASSET MANAGEMENT L P44,815$602K0.02%+2,60413F-HRTimeline
SHEETS SMITH WEALTH MANAGEMENT37,905$509K0.06%+1,38013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp37,102$498K<0.01%-1,15513F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC36,689$493K<0.01%-75,42413F-HRTimelineGroup
Janney Montgomery Scott LLC36,309$488K<0.01%+1,64613F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co34,252$460K<0.01%013F-HR/ATimelineGroup
STRS OHIO33,500$450K<0.01%013F-HRTimeline
Invesco Ltd.in group Invesco Ltd.32,768$440K<0.01%-3,23213F-HRTimelineGroup
O'SHAUGHNESSY ASSET MANAGEMENT, LLC30,577$411K<0.01%-10,78613F-HRTimeline
Perritt Capital Management Inc30,000$403K0.22%013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC29,637$398K<0.01%-8,50613F-HR/ATimelineGroup
MORGAN STANLEYin group MORGAN STANLEY28,851$387K<0.01%-16,01513F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC28,573$383K<0.01%+7,70913F-HRTimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC28,348$381K<0.01%-43413F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP26,552$357K0.03%+6,29613F-HRTimeline
UBS Group AGin group UBS Group AG26,159$351K<0.01%-47,64413F-HRTimelineGroup
ExodusPoint Capital Management, LP26,116$351K<0.01%new13F-HRTimeline
LPL Financial LLC24,846$334K<0.01%-9,20013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…23,737$319K<0.01%+6,13813F-HRTimelineGroup
Avior Wealth Management, LLC22,919$308K0.01%013F-HRTimeline
Gradient Investments LLCin group Gradient Investments LLC22,444$301K0.01%013F-HRTimelineGroup
Qube Research & Technologies Ltd21,580$290K<0.01%new13F-HRTimeline
RHUMBLINE ADVISERS18,443$248K<0.01%-74213F-HR/ATimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA18,105$243K<0.01%-1,00213F-HR/ATimelineGroup
State of Wyoming18,078$243K0.03%+11,84913F-HRTimeline
EntryPoint Capital, LLC16,491$221K0.1%new13F-HRTimeline
SeaBridge Investment Advisors LLC16,345$220K0.05%new13F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources15,859$213K<0.01%013F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…15,791$212K<0.01%+3,56413F-HRTimeline
Sterling Capital Management LLC15,686$211K<0.01%-1,96113F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC15,421$207K<0.01%-1,70013F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC14,873$200K<0.01%+34413F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD14,797$199K<0.01%+60013F-HRTimeline
Mesirow Financial Investment Management…15,682$197K<0.01%013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN13,911$187K<0.01%-10,49613F-HRTimelineGroup
Graham Capital Management, L.P.13,431$180K0.01%new13F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC13,385$180K<0.01%new13F-HRTimeline
RITHOLTZ WEALTH MANAGEMENT13,090$176K0.01%-12,21513F-HRTimeline
TRANSATLANTIQUE PRIVATE WEALTH LLC12,862$173K0.07%new13F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …11,348$152K<0.01%new13F-HRTimelineGroup
Engineers Gate Manager LP11,345$152K<0.01%-4,88413F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…10,834$146K<0.01%-1,63613F-HRTimeline
Net Worth Advisory Group10,629$143K0.04%-17513F-HRTimeline
DELTA CAPITAL MANAGEMENT LLC10,380$139K0.08%-23013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\10,207$137K<0.01%-1,91513F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC9,656$130K<0.01%-92313F-HRTimelineGroup
AlphaQuest LLC7,879$106K0.01%+5,43813F-HRTimeline
HARBOUR INVESTMENTS, INC.7,700$103K<0.01%013F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…7,602$102K<0.01%+31213F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO6,577$88.3K<0.01%+42713F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…6,477$87K<0.01%013F-HRTimelineGroup
Corebridge Financial, Inc.in group Corebridge Financial, Inc.6,310$84.7K<0.01%-9313F-HRTimelineGroup
Aquatic Capital Management LLC6,194$83.2K<0.01%+3,42113F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND5,395$72.5K<0.01%013F-HR/ATimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS4,959$66.6K<0.01%-3,71313F-HRTimelineGroup
FMR LLCin group FMR LLC3,100$41.6K<0.01%-4513F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\2,853$38.3K<0.01%013F-HRTimelineGroup
Police & Firemen's Retirement System of…2,557$34.3K<0.01%013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc1,260$16.9K<0.01%013F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…1,161$16K<0.01%013F-HRTimeline
Avion Wealth1,000$15K<0.01%013F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…922$12.4K<0.01%013F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…912$12.2K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…887$11.9K<0.01%-59313F-HRTimelineGroup
Abound Wealth Management561$7.54K<0.01%new13F-HRTimeline
COMERICA BANK511$6.86K<0.01%+27513F-HRTimeline
GROUP ONE TRADING LLC400$5.37K<0.01%013F-HRTimeline
AMALGAMATED BANK372$5K<0.01%013F-HRTimeline
GAMMA Investing LLC226$3.04K<0.01%+19513F-HR/ATimeline
CWM, LLCin group CWM, LLC214$3K<0.01%+12613F-HRTimelineGroup
Nemes Rush Group LLC200$2.69K<0.01%013F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…190$2.55K<0.01%new13F-HRTimelineGroup
Covestor Ltd54$1K<0.01%+3413F-HRTimeline
Vermillion Wealth Management, Inc.30$403<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC29$389<0.01%new13F-HRTimeline
MAI Capital Management25$336<0.01%013F-HRTimeline
True Wealth Design, LLC13$175<0.01%new13F-HRTimeline
IFP Advisors, Inc0$54<0.01%013F-HRTimelineAmount filed as zero, left out of ratios.
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.