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Mayville Engineering Company, Inc.

MEC
Exchange
NYSE
Industry
Metal Forgings & Stampings
SEC CIK
0001766368

In the last 90 days, Mayville Engineering Company, Inc. insiders filed 0 open-market purchases and 1 sale; 155 institutions reported holding it in 13F filings for Q2 2026, worth $790.6M in total; no superinvestor holds it.

Q3 2023 vs. Q2 2023

How the institutions holding Mayville Engineering Company, Inc. changed between Q2 2023 and Q3 2023.

All holders in Q3 2023All holders in Q2 2023

13F holders of MEC: Q2 2023 compared with Q3 2023
MeasureQ2 2023Of which not filed for Q3 2023Q3 2023Change
Holders86286+2
Shares8.72M86.3K8.91M+275.6K (+3.2%)
Value$108.7M$1.08M$97.8M−$9.87M (−9.2%)

2 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so the changes leave them out.

New holders (12)

Institutions that held Mayville Engineering Company, Inc. at the end of Q3 2023 but not at the end of Q2 2023.

Institutions new to MEC in Q3 2023
InstitutionSharesValue% of portfolio
JB Capital Partners LP148,478$1.63M0.40%
First Trust Advisors LP28,449$312.1K0.00%
Envestnet Asset Management Inc23,480$257.6K0.00%
Granahan Investment Management Inc15,334$168.2K0.01%
Wealth Enhancement Advisory Services, LLC14,267$156.5K0.00%
Susquehanna International Group, LLP12,129$133.1K0.00%
Balyasny Asset Management LLC10,633$116.6K0.00%
Gladius Capital Management LP2,976$32.6K0.01%
Simplex Trading, LLC1,694$18.0K0.00%
Comerica Bank130$1.42K0.00%
First Personal Financial Services25$2750.00%
First Manhattan Co16$1750.00%

Sold out (10)

Institutions that held Mayville Engineering Company, Inc. at the end of Q2 2023 and filed for Q3 2023 without it.

Institutions that sold out of MEC in Q3 2023
InstitutionShares, Q2 2023Value, Q2 2023
Kennedy Capital Management, Inc.54,262$676.1K
Jacobs Levy Equity Management, Inc45,835$571.1K
Two Sigma Investments, LP37,691$469.6K
Acadian Asset Management LLC36,720$457.0K
State of Wisconsin Investment Board26,400$328.9K
Jane Street Group, LLC25,580$318.7K
Renaissance Technologies LLC15,900$198.0K
Goldman Sachs Group Inc15,571$194.0K
Bank of Montreal11,378$162.7K
Coston, McIsaac & Partners1,000$12.0K

Not filed for Q3 2023 yet (2)

Institutions that held Mayville Engineering Company, Inc. at the end of Q2 2023 and haven't filed a 13F for Q3 2023. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MEC in Q2 2023 that haven't filed for Q3 2023
InstitutionShares, Q2 2023Value, Q2 2023
Sentinus, LLC46,800$583.1K
EA Series Trust39,484$492.0K