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Mayville Engineering Co
MEC

Overview Fund Activity

110 hedge funds and large institutions have $202M invested in Mayville Engineering Co in 2025 Q2 according to their latest regulatory filings, with 13 funds opening new positions, 46 increasing their positions, 31 reducing their positions, and 18 closing their positions.

Holders
110
Holders Change
-6
Holders Change %
-5.17%
% of All Funds
1.48%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
13
Increased
46
Reduced
31
Closed
18
Calls
$7K
Puts
$2K
Net Calls
+$5K
Net Calls Change
+$44K

Top Buyers

1
William Blair & Company
1
William Blair & Company
Illinois
$5.96M
2
Vanguard Group
2
Vanguard Group
Pennsylvania
$14.1M
3
2L
3
22NW LP
Washington
$2.48M
4
RC
4
Roubaix Capital
Colorado
$1.61M
5
BlackRock
5
BlackRock
New York
$14.6M

Top Sellers

1
NC
1
Nokomis Capital
Texas
$0
2
Citadel Advisors
2
Citadel Advisors
Florida
$255K
3
PAMP
3
Polar Asset Management Partners
Ontario, Canada
$0
4
Millennium Management
4
Millennium Management
New York
$0
5
Squarepoint
5
Squarepoint
New York
$307K
Name Market Value Shares Shares
Change 		Shares
Change %
Allspring Global Investments
1
Allspring Global Investments
North Carolina
$39.8M 2,446,090 +5,013 +0.2%
BlackRock
2
BlackRock
New York
$14.6M 913,189 +63,598 +7%
Vanguard Group
3
Vanguard Group
Pennsylvania
$14.1M 882,195 +266,049 +43%
Dimensional Fund Advisors
4
Dimensional Fund Advisors
Texas
$13M 814,034 +41,466 +5%
TAM
5
Tocqueville Asset Management
New York
$9.12M 571,187 -50,017 -8%
RA
6
Royce & Associates
New York
$8.92M 558,849 -32,470 -5%
GIM
7
Granahan Investment Management
Massachusetts
$7.95M 498,305 +20,267 +4%
William Blair & Company
8
William Blair & Company
Illinois
$5.96M 373,448 +281,198 +305%
AA
9
Ancora Advisors
Ohio
$5.74M 359,780 +50,200 +16%
First Eagle Investment Management
10
First Eagle Investment Management
New York
$5.65M 354,075 +2,200 +0.6%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$5.08M 318,321 +27,552 +9%
American Century Companies
12
American Century Companies
Missouri
$4.9M 306,982 +54,843 +22%
Arrowstreet Capital
13
Arrowstreet Capital
Massachusetts
$4.29M 268,635 +2,235 +0.8%
State Street
14
State Street
Massachusetts
$4.23M 265,050 +12,681 +5%
JCP
15
JB Capital Partners
New York
$4M 250,512 – –
Bank of America
16
Bank of America
North Carolina
$3.63M 227,699 -12,527 -5%
BCM
17
Bridgeway Capital Management
Texas
$3.55M 222,654 +9,779 +5%
Russell Investments Group
18
Russell Investments Group
United Kingdom
$3.45M 216,179 +15,867 +8%
2L
19
22NW LP
Washington
$2.48M 155,450 +155,450 New
Renaissance Technologies
20
Renaissance Technologies
New York
$2.3M 144,000 +58,100 +68%
Jacobs Levy Equity Management
21
Jacobs Levy Equity Management
New Jersey
$2.18M 136,383 +3,885 +3%
Osaic Holdings
22
Osaic Holdings
Arizona
$2.05M 130,257 -14,613 -10%
GC
23
Globeflex Capital
California
$1.86M 116,468 – –
EF
24
Empowered Funds
Pennsylvania
$1.72M 107,986 +9,779 +10%
Northern Trust
25
Northern Trust
Illinois
$1.62M 101,738 +1,829 +2%
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