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Mayville Engineering Co
MEC

Overview Fund Activity

116 hedge funds and large institutions have $168M invested in Mayville Engineering Co in 2025 Q1 according to their latest regulatory filings, with 15 funds opening new positions, 38 increasing their positions, 38 reducing their positions, and 12 closing their positions.

Holders
116
Holders Change
+2
Holders Change %
+1.75%
% of All Funds
1.58%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
15
Increased
38
Reduced
38
Closed
12
Calls
$99K
Puts
$138K
Net Calls
-$39K
Net Calls Change
-$198K

Top Buyers

1
Citadel Advisors
1
Citadel Advisors
Florida
$1.93M
2
Marshall Wace
2
Marshall Wace
United Kingdom
$1.36M
3
CP
3
CenterBook Partners
Connecticut
$1.32M
4
Millennium Management
4
Millennium Management
New York
$1.51M
5
Dimensional Fund Advisors
5
Dimensional Fund Advisors
Texas
$10.4M

Top Sellers

1
William Blair & Company
1
William Blair & Company
Illinois
$1.24M
2
NC
2
Nokomis Capital
Texas
$4.66M
3
GIM
3
Granahan Investment Management
Massachusetts
$6.42M
4
Goldman Sachs
4
Goldman Sachs
New York
$1.52M
5
HCA
5
Harbor Capital Advisors
Illinois
$0
Name Market Value Shares Shares
Change 		Shares
Change %
Allspring Global Investments
1
Allspring Global Investments
North Carolina
$33.6M 2,441,077 +1,481 +0.1%
BlackRock
2
BlackRock
New York
$11.4M 849,591 +834 +0.1%
Dimensional Fund Advisors
3
Dimensional Fund Advisors
Texas
$10.4M 772,568 +67,909 +10%
TAM
4
Tocqueville Asset Management
New York
$8.34M 621,204 -8,510 -1%
Vanguard Group
5
Vanguard Group
Pennsylvania
$8.27M 616,146 -17,606 -3%
RA
6
Royce & Associates
New York
$7.94M 591,319 +7,022 +1%
GIM
7
Granahan Investment Management
Massachusetts
$6.42M 478,038 -100,929 -17%
First Eagle Investment Management
8
First Eagle Investment Management
New York
$4.73M 351,875 +19,500 +6%
NC
9
Nokomis Capital
Texas
$4.66M 346,966 -102,826 -23%
AA
10
Ancora Advisors
Ohio
$4.16M 309,580 +1,791 +0.6%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$3.91M 290,769 +13,320 +5%
Arrowstreet Capital
12
Arrowstreet Capital
Massachusetts
$3.58M 266,400 +14,004 +6%
State Street
13
State Street
Massachusetts
$3.39M 252,369 +2,400 +1%
American Century Companies
14
American Century Companies
Missouri
$3.39M 252,139 +32,426 +15%
JCP
15
JB Capital Partners
New York
$3.36M 250,512 – –
Bank of America
16
Bank of America
North Carolina
$3.23M 240,226 +23,300 +11%
BCM
17
Bridgeway Capital Management
Texas
$2.86M 212,875 +7,794 +4%
Russell Investments Group
18
Russell Investments Group
United Kingdom
$2.69M 200,312 -15,471 -7%
Osaic Holdings
19
Osaic Holdings
Arizona
$1.95M 144,870 +14,203 +11%
Citadel Advisors
20
Citadel Advisors
Florida
$1.93M 143,747 +131,316 +1,056%
Jacobs Levy Equity Management
21
Jacobs Levy Equity Management
New Jersey
$1.78M 132,498 -2,695 -2%
PAMP
22
Polar Asset Management Partners
Ontario, Canada
$1.76M 131,053 +34,500 +36%
GC
23
Globeflex Capital
California
$1.56M 116,468 – –
Goldman Sachs
24
Goldman Sachs
New York
$1.52M 113,534 -100,224 -47%
Millennium Management
25
Millennium Management
New York
$1.51M 112,350 +82,006 +270%
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