Mayville Engineering Company, Inc. (MEC) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

21,067,241Shares Outstanding

496,404Shares held by institutions

$10,637,938Value of institutional holdings

66.10%Institutional ownership %

7.60%Shares Changed QoQ

118No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Mayville Engineering Company, Inc. (NYSE:MEC) includes 118 filers as of the latest reporting cycle ending December 2025.

These investors collectively held 66.1% of the company's total shares outstanding in December 2025, up from 63.0% in September 2025.
On a quarter-over-quarter basis, institutional holdings shifted by 7.60%, with a year-over-year an increase of 1.72% in the count of filers.
During the quarter, 60 institutions bought more Mayville Engineering Company shares, 42 sold shares, and 16 of the 118 total investors held their position steady.
This class of investors increased its holdings in Mayville Engineering Company to 13.92Mn shares for the 13F-cycle ending December 2025, up by 983.72K shares quarter on quarter, and up 2.24Mn shares year over year.
As of December 31, 2025, Allspring Global Investments Holdings, LLC held Mayville Engineering Company's largest shareholding position with over 2.05Mn shares, representing 9.74% of total outstanding shares.
Among the most significant buyers of Mayville Engineering Company during December 2025 were EVR Research LP (605.00K), Portolan Capital Management, LLC (512.76K), Congruence Capital, LLC (208.10K), BLAIR WILLIAM & CO/IL (206.55K), SILVERCREST ASSET MANAGEMENT GROUP LLC (179.94K).
Leading sellers of Mayville Engineering Company stock in December 2025 included TOCQUEVILLE ASSET MANAGEMENT L.P. (450.00K), Allspring Global Investments Holdings, LLC (358.49K), VANGUARD GROUP INC (244.00K), JACOBS LEVY EQUITY MANAGEMENT, INC (138.47K), Ancora Advisors LLC (102.27K).
The top 10 institutional holders of Mayville Engineering Company for the quarter ending December 2025 included Allspring Global Investments Holdings, LLC (2.05Mn), DIMENSIONAL FUND ADVISORS LP (877.17K), BlackRock, Inc. (865.62K), VANGUARD GROUP INC (627.65K), ROYCE & ASSOCIATES LP (624.31K), EVR Research LP (605.00K), BLAIR WILLIAM & CO/IL (583.76K), Portolan Capital Management, LLC (512.76K), 22NW, LP (414.28K), First Eagle Investment Management, LLC (358.07K).

118 Institutional Holders

496,404 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Allspring Global Investments Holdings, LLC	31 Dec, 2025	2,052,613	-358,490	-14.87%	$38,897,016.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	877,175	30,052	3.55%	$16,421,661.00
BlackRock, Inc.	31 Dec, 2025	865,619	-49,220	-5.38%	$16,204,393.00
VANGUARD GROUP INC	31 Dec, 2025	627,655	-244,004	-27.99%	$11,749,701.00
ROYCE & ASSOCIATES LP	31 Dec, 2025	624,307	57,590	10.16%	$11,687,027.00
EVR Research LP	31 Dec, 2025	605,000	605,000	0.00%	$11,325,600.00
BLAIR WILLIAM & CO/IL	31 Dec, 2025	583,759	206,549	54.76%	$10,927,968.00
Portolan Capital Management, LLC	31 Dec, 2025	512,762	512,762	0.00%	$9,598,905.00
22NW, LP	31 Dec, 2025	414,280	14,390	3.60%	$7,755,322.00
First Eagle Investment Management, LLC	31 Dec, 2025	358,075	3,500	0.99%	$6,703,164.00
AMERIPRISE FINANCIAL INC	31 Dec, 2025	350,844	-43,317	-10.99%	$6,567,800.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	328,921	-5,952	-1.78%	$6,159,053.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	288,450	19,815	7.38%	$5,399,784.00
STATE STREET CORP	31 Dec, 2025	285,000	10,064	3.66%	$5,335,200.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	280,840	-83,954	-23.01%	$5,257,325.00
Granahan Investment Management, LLC	31 Dec, 2025	267,762	-81,505	-23.34%	$5,012,505.00
CenterBook Partners LP	31 Dec, 2025	255,791	78,132	43.98%	$4,788,408.00
JB CAPITAL PARTNERS LP	31 Dec, 2025	250,512	0	0.00%	$4,689,585.00
BRIDGEWAY CAPITAL MANAGEMENT, LLC	31 Dec, 2025	226,926	-9,622	-4.07%	$4,248,055.00
Boston Partners	31 Dec, 2025	222,730	24,570	12.40%	$4,169,510.00

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