Who owns Mistras Group (MG)
Which tracked institutional funds hold MG, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MG company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on MG is one-sided between 2026-Q1 and 2026-Q2: 46 added or opened and 13 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MG’s largest tracked holder by dollar value, Mill Road Capital Management LLC, sizes it at 16.6% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 16.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MG divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 131 tracked filers holding MG, 80 increased or opened the position and 51 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MG between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 9
- Equitable Holdings, Inc.$2M
- Uniplan Investment Counsel, Inc.$1M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$1M
- Juniper Investment Company, LLC$1M
- Numerai GP LLC$873K
- LPL Financial LLC$712K
Full exits 9
- Invenomic Capital Management LP$7M
- CSM Advisors, LLC$4M
- ACADIAN ASSET MANAGEMENT LLC$2M
- Inspire Investing, LLC$2M
- LAZARD ASSET MANAGEMENT LLC$1M
- JANE STREET GROUP, LLC$736K
Largest adds
- BlackRock, Inc.$8M
- Mill Road Capital Management LLC$6M
- First Eagle Investment Management, LLC$6M
- ROYCE & ASSOCIATES LP$5M
- VANGUARD CAPITAL MANAGEMENT LLC$5M
- DIMENSIONAL FUND ADVISORS LP$5M
Largest trims
- Clearline Capital LP$4M
- SEI INVESTMENTS CO$1M
- TWO SIGMA INVESTMENTS, LP$810K
- D. E. Shaw & Co., Inc.$499K
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Mill Road Capital Management LLC added | 1,929,509 | $34M | 10.4% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 1,700,793 | $30M | 9.2% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 1,580,728 | $28M | 8.5% | 2026-Q2 |
| WEBER CAPITAL MANAGEMENT LLC /ADV trimmed | 1,448,154 | $25M | 7.8% | 2026-Q2 |
| BlackRock, Inc. added | 1,166,197 | $20M | 6.3% | 2026-Q2 |
| IES Holdings, Inc. added | 1,124,235 | $20M | 6.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,052,512 | $18M | 5.7% | 2026-Q2 |
| FEDERATED HERMES, INC. | 656,032 | $11M | 3.5% | 2026-Q2 |
| First Eagle Investment Management, LLC added | 553,855 | $10M | 3.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 510,059 | $9M | 2.7% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 389,488 | $7M | 2.1% | 2026-Q2 |
| STATE STREET CORP added | 385,924 | $7M | 2.1% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 354,371 | $6M | 1.9% | 2026-Q2 |
| Pacific Ridge Capital Partners, LLC trimmed | 282,880 | $5M | 1.5% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 275,749 | $5M | 1.5% | 2026-Q2 |
| Clearline Capital LP trimmed | 267,460 | $5M | 1.4% | 2026-Q2 |
| ESSEX INVESTMENT MANAGEMENT CO LLC trimmed | 257,127 | $4M | 1.4% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 232,669 | $4M | 1.3% | 2026-Q2 |
| Empowered Funds, LLC | 225,494 | $4M | 1.2% | 2026-Q2 |
| JB CAPITAL PARTNERS LP | 202,243 | $4M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP added | 201,968 | $4M | 1.1% | 2026-Q2 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC added | 161,333 | $3M | 0.9% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 151,487 | $3M | 0.8% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 149,648 | $3M | 0.8% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 149,357 | $3M | 0.8% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 143,262 | $3M | 0.8% | 2026-Q2 |
| Knights of Columbus Asset Advisors LLC trimmed | 139,955 | $2M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 130,002 | $2M | 0.7% | 2026-Q2 |
| RITHOLTZ WEALTH MANAGEMENT added | 113,834 | $2M | 0.6% | 2026-Q2 |
| MORGAN STANLEY added | 111,207 | $2M | 0.6% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 109,080 | $2M | 0.6% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 105,898 | $2M | 0.6% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 102,700 | $2M | 0.6% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 101,998 | $2M | 0.5% | 2026-Q2 |
| Informed Momentum Co LLC trimmed | 92,457 | $2M | 0.5% | 2026-Q2 |
| Legato Capital Management LLC added | 86,529 | $2M | 0.5% | 2026-Q2 |
| Equitable Holdings, Inc. new | 86,445 | $2M | 0.5% | 2026-Q2 |
| UBS Group AG added | 84,463 | $1M | 0.5% | 2026-Q2 |
| Nuveen, LLC added | 83,409 | $1M | 0.4% | 2026-Q2 |
| Bank of New York Mellon Corp added | 79,219 | $1M | 0.4% | 2026-Q2 |
| Uniplan Investment Counsel, Inc. new | 77,889 | $1M | 0.4% | 2026-Q2 |
| Manatuck Hill Partners, LLC added | 71,900 | $1M | 0.4% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 66,187 | $1M | 0.4% | 2026-Q2 |
| Raiffeisen Bank International AG | 65,000 | $1M | 0.4% | 2026-Q2 |
| Juniper Investment Company, LLC new | 61,138 | $1M | 0.3% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 60,219 | $1M | 0.3% | 2026-Q2 |
| RBF Capital, LLC | 55,000 | $961K | 0.3% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 54,802 | $957K | 0.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 50,134 | $876K | 0.3% | 2026-Q2 |
| Numerai GP LLC new | 49,965 | $873K | 0.3% | 2026-Q2 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added | 45,011 | $732K | 0.2% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 44,226 | $773K | 0.2% | 2026-Q2 |
| Ellsworth Advisors, LLC new | 42,316 | $679K | 0.2% | 2026-Q2 |
| LPL Financial LLC new | 40,734 | $712K | 0.2% | 2026-Q2 |
| Concentric Capital Strategies, LP new | 39,545 | $691K | 0.2% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 37,245 | $651K | 0.2% | 2026-Q2 |
| STRS OHIO added | 35,400 | $618K | 0.2% | 2026-Q2 |
| Verdad Advisers, LP | 34,526 | $603K | 0.2% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC trimmed | 34,410 | $601K | 0.2% | 2026-Q2 |
| Trexquant Investment LP trimmed | 33,379 | $583K | 0.2% | 2026-Q2 |
| XTX Topco Ltd trimmed | 31,972 | $559K | 0.2% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 27,131 | $474K | 0.1% | 2026-Q2 |
| Invesco Ltd. trimmed | 27,084 | $473K | 0.1% | 2026-Q2 |
| Hillsdale Investment Management Inc. | 26,600 | $465K | 0.1% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 24,884 | $435K | 0.1% | 2026-Q2 |
| EntryPoint Capital, LLC added | 22,015 | $385K | 0.1% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 20,968 | $366K | 0.1% | 2026-Q2 |
| OLD NATIONAL BANCORP /IN/ | 20,000 | $349K | 0.1% | 2026-Q2 |
| Dynamic Technology Lab Private Ltd trimmed | 19,651 | $343K | 0.1% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 19,227 | $336K | 0.1% | 2026-Q2 |
| SEIZERT CAPITAL PARTNERS, LLC new | 18,938 | $331K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 18,797 | $328K | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 18,176 | $318K | 0.1% | 2026-Q2 |
| Assenagon Asset Management S.A. | 17,971 | $314K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 17,120 | $299K | 0.1% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC new | 16,957 | $296K | 0.1% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP added | 16,460 | $288K | 0.1% | 2026-Q2 |
| Banco Santander, S.A. new | 16,392 | $286K | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 15,480 | $229K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 14,533 | $254K | 0.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 14,268 | $249K | 0.1% | 2026-Q2 |
| SIMPLEX TRADING, LLC added | 13,151 | $230K | 0.1% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 13,018 | $227K | 0.1% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC trimmed | 11,635 | $203K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 10,559 | $184K | 0.1% | 2026-Q2 |
| Quadrature Capital Ltd new | 10,427 | $182K | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 8,210 | $143K | 0.0% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 8,152 | $142K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 7,873 | $144K | 0.0% | 2026-Q2 |
| GROUP ONE TRADING LLC added | 7,518 | $131K | 0.0% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 6,490 | $122K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC trimmed | 6,056 | $106K | 0.0% | 2026-Q2 |
| Police & Firemen's Retirement System of New Jersey added | 5,967 | $104K | 0.0% | 2026-Q2 |
| FMR LLC trimmed | 5,299 | $93K | 0.0% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND | 5,076 | $89K | 0.0% | 2026-Q2 |
| State of Wyoming trimmed | 4,087 | $71K | 0.0% | 2026-Q2 |
| Rockefeller Capital Management L.P. trimmed | 3,520 | $61K | 0.0% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 3,280 | $57K | 0.0% | 2026-Q2 |
| BARCLAYS PLC trimmed | 3,264 | $57K | 0.0% | 2026-Q2 |
| Values First Advisors, Inc. trimmed | 2,000 | $604K | 0.2% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.