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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 %
California State Teachers Retirement System (CalSTRS)
101
California State Teachers Retirement System (CalSTRS)
California
$12.4K 922 – –
AIP
102
Ameritas Investment Partners
Nebraska
$12.2K 912 – –
TRCT
103
Tower Research Capital (TRC)
New York
$11.9K 887 -593 -40%
AWM
104
Abound Wealth Management
Tennessee
$7.54K 561 +561 New
Comerica Bank
105
Comerica Bank
Texas
$6.86K 511 +275 +117%
Group One Trading
106
Group One Trading
Illinois
$5.37K 400 – –
AB
107
Amalgamated Bank
New York
$5K 372 – –
GI
108
GAMMA Investing
California
$3.04K 226 +195 +629%
Carson Wealth (CWM LLC)
109
Carson Wealth (CWM LLC)
Nebraska
$3K 214 +126 +143%
NRG
110
Nemes Rush Group
Michigan
$2.69K 200 – –
Northwestern Mutual Wealth Management
111
Northwestern Mutual Wealth Management
Wisconsin
$2.55K 190 +190 New
C
112
Covestor
United Kingdom
$1K 54 +34 +170%
VWM
113
Vermillion Wealth Management
Minnesota
$403 30 – –
Nisa Investment Advisors
114
Nisa Investment Advisors
Missouri
$389 29 +29 New
MCM
115
MAI Capital Management
Ohio
$336 25 – –
TWD
116
True Wealth Design
Ohio
$175 13 +13 New
IA
117
IFP Advisors
Florida
– – – –
HCA
118
Harbor Capital Advisors
Illinois
– – -82,413 Closed
YC
119
Yarbrough Capital
Tennessee
– – -26,866 Closed
PAM
120
Panagora Asset Management
Massachusetts
– – -24,704 Closed
Connor, Clark & Lunn Investment Management (CC&L)
121
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
– – -22,002 Closed
RP
122
Riverwater Partners
Wisconsin
– – -21,577 Closed
HF
123
HRT Financial
New York
– – -15,623 Closed
Acadian Asset Management
124
Acadian Asset Management
Massachusetts
– – -13,751 Closed
CIC
125
Cornercap Investment Counsel
Georgia
– – -13,170 Closed
2 3 4
5
6