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MEC

Mayville Engineering Company, Inc.
$33.93 -0.56 (-1.62%) At close · Jul 15
Market Cap
$673.23M
Shares
20,494,006

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 123
Total Value: $259,755,456
Total Shares: 14,331,399
Showing 1–100 of 123 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 123 13F filers
Top Holder
14.0%
Jun 2023 → Mar 2026 · range 11.2% – 29.7%
of institutional value
Top 5
37.6%
Jun 2023 → Mar 2026 · range 36.2% – 56.8%
of institutional value
Top 10
55.5%
Jun 2023 → Mar 2026 · range 54.0% – 70.5%
of institutional value
HHI
458
Jun 2023 → Mar 2026 · range 449 – 1,139
Broadly held
Showing 100 of 123
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1766368 CUSIP 578605107 13F (30d) 9 filings 7 filers Visit website Investor relations