MAYVILLE ENGR CO INC (MEC): Ownership & Insider Activity
Hedge funds and institutional managers reporting a position in MEC · Industrials. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.
Reported Holders
14
13F filers
Aggregate Value
$64.4M
Across holders
Last Price
$21.16
2026-08-24
Sector
Industrials
GICS
Quarterly fund activity8 increased5 reduced2 exited
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| First Eagle Investment Management, LLC CIK 0001325447 | Institutional Manager | 370K | $13.8M | 21.5% | 0.0% | Reduced | $-1.3M | Q2 2026 |
| MILLENNIUM MANAGEMENT LLC CIK 0001273087 | Hedge Fund | 254K | $9.5M | 14.8% | 0.0% | Reduced | $-4.8M | Q2 2026 |
| Squarepoint Ops LLC CIK 0001642575 | Hedge Fund | 239K | $8.9M | 13.9% | 0.0% | Added | +$4.8M | Q2 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 199K | $7.5M | 11.6% | 0.0% | Added | +$6.2M | Q2 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 199K | $7.4M | 11.6% | 0.0% | Added | +$6.4M | Q2 2026 |
| TUDOR INVESTMENT CORP ET AL CIK 0000923093 | Hedge Fund | 170K | $6.4M | 9.9% | 0.0% | Added | — | Q2 2026 |
| Walleye Capital LLC CIK 0001758720 | Hedge Fund | 93K | $3.5M | 5.4% | 0.0% | Added | — | Q2 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 87K | $3.3M | 5.1% | 0.0% | Added | — | Q2 2026 |
| BALYASNY ASSET MANAGEMENT LLC CIK 0001218710 | Hedge Fund | 47K | $1.8M | 2.7% | 0.0% | Added | — | Q2 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 28K | $1.0M | 1.6% | 0.0% | Reduced | $-1.3M | Q2 2026 |
Reduced
Institutional Manager
$13.8M· 21.5% of total· 0.0% port· 370K sh· $-1.3M QoQ· Q2 2026
Reduced
Hedge Fund
$9.5M· 14.8% of total· 0.0% port· 254K sh· $-4.8M QoQ· Q2 2026
Added
Hedge Fund
$8.9M· 13.9% of total· 0.0% port· 239K sh· +$4.8M QoQ· Q2 2026
Added
Hedge Fund
$7.5M· 11.6% of total· 0.0% port· 199K sh· +$6.2M QoQ· Q2 2026
Added
Hedge Fund
$7.4M· 11.6% of total· 0.0% port· 199K sh· +$6.4M QoQ· Q2 2026
Added
Hedge Fund
$6.4M· 9.9% of total· 0.0% port· 170K sh· — QoQ· Q2 2026
Added
Hedge Fund
$3.5M· 5.4% of total· 0.0% port· 93K sh· — QoQ· Q2 2026
Added
Hedge Fund
$3.3M· 5.1% of total· 0.0% port· 87K sh· — QoQ· Q2 2026
Added
Hedge Fund
$1.8M· 2.7% of total· 0.0% port· 47K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$1.0M· 1.6% of total· 0.0% port· 28K sh· $-1.3M QoQ· Q2 2026
Reduced
Hedge Fund
$683K· 1.1% of total· 0.0% port· 18K sh· +$601K QoQ· Q2 2026
Added
Hedge Fund
$360K· 0.6% of total· 0.0% port· 10K sh· — QoQ· Q2 2026
Reduced
Hedge Fund
$209K· 0.3% of total· 0.0% port· 6K sh· $-241K QoQ· Q2 2026
Unchanged
Hedge Fund
$10K· 0.0% of total· 0.0% port· 276 sh· +$0 QoQ· Q2 2026
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