MAYVILLE ENGR CO INC

Ticker: MEC CUSIP: 578605107 Class: Common Stock

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
Allspring Global Investments Holdings, LLC2,052,613$38,897
DIMENSIONAL FUND ADVISORS LP877,175$16,422
BlackRock, Inc.865,619$16,204
VANGUARD GROUP INC627,655$11,750
ROYCE & ASSOCIATES LP624,307$11,687
EVR Research LP605,000$11,326
BLAIR WILLIAM & CO/IL583,759$10,928
Portolan Capital Management, LLC512,762$9,599
22NW, LP414,280$7,755
First Eagle Investment Management, LLC358,075$6,703
AMERIPRISE FINANCIAL INC350,844$6,568
GEODE CAPITAL MANAGEMENT, LLC328,921$6,159
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP288,450$5,400
STATE STREET CORP285,000$5,335
AMERICAN CENTURY COMPANIES INC280,840$5,257
Granahan Investment Management, LLC267,762$5,013
CenterBook Partners LP255,791$4,788
JB CAPITAL PARTNERS LP250,512$4,690
BRIDGEWAY CAPITAL MANAGEMENT, LLC226,926$4,248
Boston Partners222,730$4,170
BANK OF AMERICA CORP /DE/218,888$4,098
Congruence Capital, LLC208,102$3,896
Russell Investments Group, Ltd.189,981$3,556
SILVERCREST ASSET MANAGEMENT GROUP LLC179,941$3,368
MILLENNIUM MANAGEMENT LLC153,200$2,868
UBS Group AG146,552$2,743
Roubaix Capital, LLC146,297$2,739
Ancora Advisors LLC126,030$2,359
OSAIC HOLDINGS, INC.120,078$2,248
ANCHOR CAPITAL ADVISORS LLC108,318$2,028
KENNEDY CAPITAL MANAGEMENT LLC104,345$1,953
CITADEL ADVISORS LLC103,463$1,937
Wealthspire Advisors, LLC95,415$1,786
NORTHERN TRUST CORP94,368$1,767
GOLDMAN SACHS GROUP INC89,747$1,680
Nuveen, LLC87,587$1,640
SEI INVESTMENTS CO83,569$1,564
MORGAN STANLEY82,390$1,542
RENAISSANCE TECHNOLOGIES LLC71,200$1,333
TOCQUEVILLE ASSET MANAGEMENT L.P.71,100$1,331
PANAGORA ASSET MANAGEMENT INC54,594$1,022
JANE STREET GROUP, LLC53,074$994
SummerHaven Investment Management, LLC51,725$968
CHARLES SCHWAB INVESTMENT MANAGEMENT INC43,455$813
Bank of New York Mellon Corp42,289$792
STATE OF WISCONSIN INVESTMENT BOARD40,697$762
FORMULA GROWTH LTD40,000$749
SHEETS SMITH WEALTH MANAGEMENT38,975$730
RAYMOND JAMES FINANCIAL INC38,672$724
BARCLAYS PLC37,025$693
Janney Montgomery Scott LLC34,150$1
AQR CAPITAL MANAGEMENT LLC31,908$597
JACOBS LEVY EQUITY MANAGEMENT, INC31,868$597
PERRITT CAPITAL MANAGEMENT INC30,000$562
Rothschild Wealth LLC30,000$562
JOURNEY STRATEGIC WEALTH LLC29,185$546
Invesco Ltd.27,870$522
O'SHAUGHNESSY ASSET MANAGEMENT, LLC27,144$508
ENVESTNET ASSET MANAGEMENT INC23,358$437
WELLS FARGO & COMPANY/MN22,491$421
LPL Financial LLC21,788$408
XTX Topco Ltd21,334$399
Gradient Investments LLC20,904$391
D. E. Shaw & Co., Inc.19,416$363
RHUMBLINE ADVISERS18,032$338
Johnson Financial Group, Inc.16,475$308
Sterling Capital Management LLC16,171$303
SummitTX Capital, L.P.15,118$283
Avior Wealth Management, LLC14,919$279
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC13,792$245
Worth Venture Partners, LLC13,735$257
FRANKLIN RESOURCES INC13,458$252
HRT FINANCIAL LP12,933$0
ALLIANCEBERNSTEIN L.P.12,810$240
BOOTHBAY FUND MANAGEMENT, LLC12,160$228
ExodusPoint Capital Management, LP11,316$212
AlphaQuest LLC10,954$205
DEUTSCHE BANK AG\8,249$154
MetLife Investment Management, LLC7,958$149
Quantbot Technologies LP7,827$147
HARBOUR INVESTMENTS, INC.7,700$144
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.6,105$114
PICTON MAHONEY ASSET MANAGEMENT5,800$109
JPMORGAN CHASE & CO5,553$104
NEW YORK STATE COMMON RETIREMENT FUND5,395$101
Police & Firemen's Retirement System of New Jersey4,651$87
Aquatic Capital Management LLC4,383$82
State of Alaska, Department of Revenue3,903$0
ROYAL BANK OF CANADA3,784$70
FMR LLC3,329$62
BNP PARIBAS ARBITRAGE, SA2,955$55
JONES FINANCIAL COMPANIES LLLP2,929$55
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2,189$41
Clearstead Advisors, LLC2,094$39
Ameritas Investment Partners, Inc.1,454$27
CITIGROUP INC1,391$26
Legal & General Group Plc1,260$24
Tower Research Capital LLC (TRC)1,090$20
Avion Wealth1,000$0
CWM, LLC901$0
21 other institutions3,971$66
Total (121 institutions)13,849,258$258,722