Mayville Engineering

MEC • NYSE

Mayville Engineering is a manufacturing - metal fabrication company in the industrials sector on NYSE, led by Jagadeesh (Jag) A. Reddy, with a market cap of $378.3M. As of Q3 2025, 66% of shares are held by 104 institutional investors, with Allspring Global Investments Holdings, LLC as the largest holder at 11.87%.

President and Chief Executive OfficerJagadeesh (Jag) A. Reddy

Market Cap$378.3M

Manufacturing - Metal Fabrication

Industrials

Employees2.5K

Websitemecinc.com

Country

United States of America

Overview

Overview of institutional ownership in MEC as of Q3 2025 with a market cap of $279.6M

All Institutions

Institutions: 104
Value Held: $183.6M
Shares Held: 13.3M
Avg Position: $1.8M
Median Position: $352.4K

Hedge Funds

Hedge Funds: 12
Value Held: $26.1M
Shares Held: 1.8M
Avg Position: $2.2M
Median Position: $2.2M

Ownership Breakdown

Institutional (non-HF)

56.33%

$157.5M

Hedge Funds

9.33%

$26.1M

Retail & Other

34.34%

$96.0M

Based on market cap of $279.6M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in MEC as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
Allspring Global Investments Holdings, LLC Long Only Manager	Francis Jon Baranko President	$32.9M 0.05% of portfolio	11.87% 2.4M shares	Q4 2021 Held for 3y 11m	$61.5B
B BlackRock, Inc. Institution	-	$12.6M 0.00% of portfolio	4.50% 914.8K shares	Q2 2019 Held for 6y 5m	$5.67T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$12.0M 0.00% of portfolio	4.29% 871.7K shares	Q2 2019 Held for 6y 5m	$6.69T
DIMENSIONAL FUND ADVISORS LP Long Only Manager	David Paul Butler CEO	$11.7M 0.00% of portfolio	4.17% 847.1K shares	Q1 2021 Held for 4y 8m	$466.32B
R ROYCE & ASSOCIATES LLC Institution	-	$7.8M 0.08% of portfolio	2.79% 566.7K shares	Q4 2022 Held for 2y 11m	$10.0B
TOCQUEVILLE ASSET MANAGEMENT L.P. Long Only Manager	Paul J Kleinschmidt CEO	$7.2M 0.10% of portfolio	2.56% 521.1K shares	Q4 2019 Held for 5y 11m	$6.9B
2 22NW, LP Hedge Fund•Long/Short	James Paul Stoner CFO	$5.5M 2.87% of portfolio	1.97% 399.9K shares	Q2 2025 Held for 5 months	$191.5M
AMERIPRISE FINANCIAL INC Institution	Jim Cracchiolo CEO	$5.4M 0.00% of portfolio	1.94% 394.2K shares	Q3 2021 Held for 4y 2m	$433.11B
B BLAIR WILLIAM & CO/IL Institution	-	$5.2M 0.01% of portfolio	1.86% 377.2K shares	Q1 2023 Held for 2y 8m	$37.6B
A AMERICAN CENTURY COMPANIES INC Institution	-	$5.0M 0.00% of portfolio	1.80% 364.8K shares	Q4 2022 Held for 2y 11m	$195.93B

Net Capital Flow

Institutional buying and selling activity for MEC in Q3 2025

Traded: +$8.1M
Buyers: 57
Sellers: 47
Total Bought: +$20.4M
Total Sold: −$12.3M
Avg Position: $1.5M

Biggest Buyers

Institution	Net Bought	Current Position
AMERIPRISE FINANCIAL INC Institution	+$4.9M +354.5K shares	$5.4M 394.2K shares
2 22NW, LP Hedge Fund•Long/Short	+$3.4M +244.4K shares	$5.5M 399.9K shares
Robeco Investment Management, Inc. Long Only Manager	+$2.7M +198.2K shares	$2.7M 198.2K shares
R Roubaix Capital, LLC Hedge Fund•Long/Short	+$1.5M +111.6K shares	$2.9M 212.7K shares
CenterBook Partners LP Hedge Fund•Market Neutral	+$1.1M +82.6K shares	$2.4M 177.7K shares
A AMERICAN CENTURY COMPANIES INC Institution	+$795.5K +57.8K shares	$5.0M 364.8K shares
SummerHaven Investment Management, LLC Long Only Manager	+$711.7K +51.7K shares	$711.7K 51.7K shares
AQR CAPITAL MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$470.1K +34.2K shares	$819.3K 59.5K shares
JACOBS LEVY EQUITY MANAGEMENT, INC Hedge Fund•Quant	+$467.2K +34.0K shares	$2.3M 170.3K shares
DIMENSIONAL FUND ADVISORS LP Long Only Manager	+$455.3K +33.1K shares	$11.7M 847.1K shares

Biggest Sellers

Institution	Net Sold	Current Position
GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager	−$2.1M −149.0K shares	$4.8M 349.3K shares
Ancora Advisors, LLC RIA/Wealth	−$1.8M −131.5K shares	$3.1M 228.3K shares
Marshall Wace LLP Institution	−$1.0M −64.6K shares	Sold Off 0 shares
TOCQUEVILLE ASSET MANAGEMENT L.P. Long Only Manager	−$689.2K −50.1K shares	$7.2M 521.1K shares
HENDERSON GROUP PLC Institution	−$606.7K −38.0K shares	Sold Off 0 shares
Allspring Global Investments Holdings, LLC Long Only Manager	−$477.2K −35.0K shares	$32.9M 2.4M shares
E Expect Equity LLC Institution	−$450.6K −28.2K shares	Sold Off 0 shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	−$449.8K −28.2K shares	Sold Off 0 shares
LAZARD ASSET MANAGEMENT LLC Long Only Manager	−$431.9K −27.1K shares	Sold Off 0 shares
MORGAN STANLEY RIA/Wealth	−$375.7K −27.3K shares	$481.6K 35.0K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited MEC in Q3 2025

New Positions: 7
New Value: $3.7M
Exited Positions: 20
Exited Value: $5.3M

New Positions

Institution	Position Value
Robeco Investment Management, Inc. Long Only Manager	$2.7M 198.2K shares
SummerHaven Investment Management, LLC Long Only Manager	$711.7K 51.7K shares
PRUDENTIAL FINANCIAL INC Institution	$261.8K 19.0K shares
SRS Capital Advisors, Inc. RIA/Wealth	$22.2K 1.6K shares
Hartland & Co., LLC RIA/Wealth	$9.8K 710.0 shares
O Optiver Holding B.V. Institution	$3.2K 236.0 shares
A Atlantic Trust Group, LLC Institution	$1.1K 80.0 shares

Exited Positions

Institution	Previous Position
Marshall Wace LLP Institution	$1.0M 64.6K shares
HENDERSON GROUP PLC Institution	$606.7K 38.0K shares
E Expect Equity LLC Institution	$450.6K 28.2K shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$449.8K 28.2K shares
LAZARD ASSET MANAGEMENT LLC Long Only Manager	$431.9K 27.1K shares
S Squarepoint Ops LLC Hedge Fund•Quant	$306.8K 19.2K shares
BAILARD, INC. RIA/Wealth	$284.1K 17.8K shares
S SeaBridge Investment Advisors LLC RIA/Wealth	$261.0K 16.4K shares
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$255.2K 16.0K shares
TRANSATLANTIQUE PRIVATE WEALTH LLC RIA/Wealth	$205.3K 12.9K shares

Options Activity

Institutions with the largest Call and Put options positions in MEC as of Q3 2025

Call Positions: 0
Call Value: -
Put Positions: 0
Put Value: -

Call Positions

Institution	Position Value
No call positions found

Put Positions

Institution	Position Value
No put positions found

Most Committed Institutions

Institutions with MEC as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
2 22NW, LP Hedge Fund•Long/Short	James Paul Stoner CFO	2.87% $5.5M	1.97% 399.9K shares	Q2 2025 Held for 5 months	$191.5M
R Roubaix Capital, LLC Hedge Fund•Long/Short	Christopher Edmund Hillary CEO	1.33% $2.9M	1.05% 212.7K shares	Q2 2025 Held for 5 months	$220.3M
J JB CAPITAL PARTNERS LP Hedge Fund•Value	Alan Wayne Weber CCO	0.76% $4.5M	1.23% 250.5K shares	Q3 2023 Held for 2y 2m	$584.1M
SummerHaven Investment Management, LLC Long Only Manager	Kurt Jonathon Nelson CEO	0.42% $711.7K	0.25% 51.7K shares	Q3 2025 Held for 2 months	$170.9M
GLOBEFLEX CAPITAL L P Long Only Manager	Marina Loretta Marrelli CEO	0.25% $1.6M	0.57% 116.5K shares	Q3 2024 Held for 1y 2m	$644.8M
GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager	Jane Moran White CEO	0.20% $4.8M	1.72% 349.3K shares	Q3 2023 Held for 2y 2m	$2.4B
PERRITT CAPITAL MANAGEMENT INC Long Only Manager	Mark J Buh President	0.20% $412.8K	0.15% 30.0K shares	Q3 2021 Held for 4y 2m	$211.0M
E EntryPoint Capital, LLC Hedge Fund•Long/Short	Lawrence Edward Leibowitz CEO	0.13% $331.6K	0.12% 24.1K shares	Q1 2025 Held for 8 months	$258.4M
CenterBook Partners LP Hedge Fund•Market Neutral	David Israel Stemerman CEO	0.12% $2.4M	0.87% 177.7K shares	Q1 2025 Held for 8 months	$2.0B
TOCQUEVILLE ASSET MANAGEMENT L.P. Long Only Manager	Paul J Kleinschmidt CEO	0.10% $7.2M	2.56% 521.1K shares	Q4 2019 Held for 5y 11m	$6.9B

Hedge Fund Spotlight

Discover hedge funds investing in MEC

CenterBook Partners LP

Hedge Fund • Market Neutral

Portfolio ManagerDavid Israel Stemerman

Portfolio Value: $2.0B
Positions: 545
Last Reported: Q3 2025

Sector Allocation

Position in Mayville Engineering

Market Value: $2.4M
Shares Held: 177.7K
Portfolio Weight: 0.12%
Owned Since: 2025-Q1

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