MG Institutional Ownership & Shareholders
MISTRAS GROUP INC (MG) is currently held by 137 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $351.41M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Mill Road Capital Management Llc is currently the largest disclosed institutional shareholder of MG tracked by InsiderSet, reporting ownership valued at approximately $33.71M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $38.94M, representing an estimated gain of +15.51% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 59% of the total disclosed MG value among the investors covered in this analysis. Major shareholders include Mill Road Capital Management Llc, Dimensional Fund Advisors Lp, Weber Capital Management Llc, and several other long-term asset managers with concentrated positions in MISTRAS GROUP INC (MG).
This page ranks the largest institutional MG shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
137
Total Reported Value
$351.41M
Largest Holder
Mill Road Capital Management Llc
Largest Position
$33.71M
Insider Transactions (90d)
5
Latest Filing Quarter
Q2 2026
New Institutional Positions
110
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Mill Road Capital Management Llc | 16.64% | 1,929,509 | $33,708,522 | $38,937,492 | +$5,228,970 | +15.51% | |
| Dimensional Fund Advisors Lp | 0.01% | 1,700,793 | $29,715,235 | $34,322,003 | +$4,606,768 | +15.50% | |
| Weber Capital Management Llc | 26.11% | 1,360,146 | $28,644,675 | $27,447,746 | -$1,196,929 | -4.18% | |
| Royce & Associates Lp | 0.22% | 1,580,728 | $27,615,318 | $31,899,091 | +$4,283,773 | +15.51% | |
| Blackrock, Inc. | 0.00% | 1,166,197 | $20,373,462 | $23,533,855 | +$3,160,393 | +15.51% | |
| Ies Holdings, Inc. | 6.32% | 1,124,235 | $19,640,385 | $22,687,062 | +$3,046,677 | +15.51% | |
| Vanguard Capital Management Llc | 0.00% | 1,052,512 | $18,387,385 | $21,239,692 | +$2,852,307 | +15.51% | |
| Federated Hermes, Inc. | 0.02% | 656,032 | $11,460,879 | $13,238,726 | +$1,777,847 | +15.51% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 553,855 | $9,675,847 | $11,176,794 | +$1,500,947 | +15.51% |
| Geode Capital Management, Llc | 0.00% | 510,059 | $8,912,951 | $10,292,991 | +$1,380,040 | +15.48% | |
| Wasatch Advisors Lp | 0.06% | 392,289 | $8,261,606 | $7,916,392 | -$345,214 | -4.18% | |
| Deutsche Bank Ag\ | 0.00% | 389,488 | $6,804,356 | $7,859,868 | +$1,055,512 | +15.51% | |
| State Street Corp | 0.00% | 385,924 | $6,742,092 | $7,787,946 | +$1,045,854 | +15.51% | |
| Bridgeway Capital Management, Llc | 0.11% | 354,371 | $6,190,861 | $7,151,207 | +$960,346 | +15.51% | |
| Essex Investment Management Co Llc | 0.78% | 249,209 | $5,248,342 | $5,029,038 | -$219,304 | -4.18% | |
| Pacific Ridge Capital Partners, Llc | 0.90% | 282,880 | $4,941,914 | $5,708,518 | +$766,604 | +15.51% | |
| Acadian Asset Management Llc | 0.01% | 276,512 | $4,825,000 | $5,580,012 | +$755,012 | +15.65% | |
| Qube Research & Technologies Ltd | 0.01% | 275,749 | $4,817,335 | $5,564,615 | +$747,280 | +15.51% | |
| Csm Advisors, Llc | 0.10% | 267,586 | $4,674,000 | $5,399,885 | +$725,885 | +15.53% | |
| Clearline Capital Lp | 0.30% | 267,460 | $4,672,526 | $5,397,343 | +$724,817 | +15.51% | |
| Algert Global Llc | 0.05% | 232,669 | $4,064,727 | $4,695,260 | +$630,533 | +15.51% | |
| Empowered Funds, Llc | 0.02% | 225,494 | $3,939,380 | $4,550,469 | +$611,089 | +15.51% | |
| Jb Capital Partners Lp | 0.55% | 202,243 | $3,533,185 | $4,081,264 | +$548,079 | +15.51% | |
| Northern Trust Corp | 0.00% | 201,968 | $3,528,381 | $4,075,714 | +$547,333 | +15.51% | |
| O'Shaughnessy Asset Management, Llc | 0.01% | 161,333 | $2,818,488 | $3,255,700 | +$437,212 | +15.51% | |
| Citadel Advisors Llc | 0.00% | 151,487 | $2,646,478 | $3,057,008 | +$410,530 | +15.51% | |
| Goldman Sachs Group Inc | 0.00% | 149,648 | $2,614,351 | $3,019,897 | +$405,546 | +15.51% | |
| Two Sigma Investments, Lp | 0.00% | 149,357 | $2,609,267 | $3,014,024 | +$404,757 | +15.51% | |
| Vanguard Portfolio Management Llc | 0.00% | 143,262 | $2,502,787 | $2,891,027 | +$388,240 | +15.51% | |
| Knights Of Columbus Asset Advisors Llc | 0.12% | 139,955 | $2,445,014 | $2,824,292 | +$379,278 | +15.51% | |
| Vanguard Fiduciary Trust Co | 0.00% | 130,002 | $2,271,135 | $2,623,440 | +$352,305 | +15.51% | |
| Ritholtz Wealth Management | 0.03% | 113,834 | $1,988,680 | $2,297,170 | +$308,490 | +15.51% | |
| Morgan Stanley | 0.00% | 111,207 | $1,942,786 | $2,244,157 | +$301,371 | +15.51% | |
| Ameriprise Financial Inc | 0.00% | 109,080 | $1,905,627 | $2,201,234 | +$295,607 | +15.51% | |
| Jacobs Levy Equity Management, Inc | 0.01% | 105,898 | $1,850,038 | $2,137,022 | +$286,984 | +15.51% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 102,700 | $1,794,169 | $2,072,486 | +$278,317 | +15.51% |
| Sei Investments Co | 0.00% | 101,998 | $1,781,905 | $2,058,320 | +$276,415 | +15.51% | |
| Informed Momentum Co Llc | 0.14% | 92,457 | $1,615,224 | $1,865,782 | +$250,558 | +15.51% | |
| Legato Capital Management Llc | 0.13% | 86,529 | $1,511,662 | $1,746,155 | +$234,493 | +15.51% | |
| Equitable Holdings, Inc. | 0.01% | 86,445 | $1,510,194 | $1,744,460 | +$234,266 | +15.51% | |
| Ubs Group Ag | 0.00% | 84,463 | $1,475,569 | $1,704,463 | +$228,894 | +15.51% | |
| Nuveen, Llc | 0.00% | 83,409 | $1,457,156 | $1,683,194 | +$226,038 | +15.51% | |
| Gsa Capital Partners Llp | 0.09% | 79,701 | $1,392,000 | $1,608,366 | +$216,366 | +15.54% | |
| Raiffeisen Bank International Ag | 0.02% | 65,100 | $1,389,234 | $1,313,718 | -$75,516 | -5.44% | |
| Bank Of New York Mellon Corp | 0.00% | 79,219 | $1,383,959 | $1,598,639 | +$214,680 | +15.51% | |
| Uniplan Investment Counsel, Inc. | 0.13% | 77,889 | $1,360,733 | $1,571,800 | +$211,067 | +15.51% | |
| Manatuck Hill Partners, Llc | 0.42% | 71,900 | $1,256,093 | $1,450,942 | +$194,849 | +15.51% | |
| Summerhaven Investment Management, Llc | 0.66% | 56,209 | $1,183,762 | $1,134,298 | -$49,464 | -4.18% | |
| Susquehanna International Group, Llp | 0.00% | 66,187 | $1,156,287 | $1,335,654 | +$179,367 | +15.51% | |
| Juniper Investment Company, Llc | 0.28% | 61,138 | $1,068,081 | $1,233,765 | +$165,684 | +15.51% |
Frequently asked questions about MG
Who are the largest institutional holders of MG?
The largest institutional holders of MG reported in the latest SEC Form 13F filings include Mill Road Capital Management Llc, Dimensional Fund Advisors Lp, Weber Capital Management Llc, Royce & Associates Lp, and Blackrock, Inc.. InsiderSet ranks institutional holders by their latest reported MG position.
What is MG institutional ownership?
This page tracks MG positions reported by institutional investment managers through SEC Form 13F. MISTRAS GROUP INC (MG) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own MG?
InsiderSet currently tracks 137 institutional managers reporting MG holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of MG shareholders.
How much MG stock do institutions own?
Institutional investment managers disclosed approximately $351.41M in MG holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was MG institutional ownership last updated?
The latest MG institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional MG holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its MG position after the reporting date.
Are institutions buying or selling MG?
Institutional buying and selling can be analyzed by comparing MG positions across consecutive 13F reporting periods. InsiderSet's MG Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View MG ownership changes.
How has MG institutional ownership changed over time?
InsiderSet tracks MG institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.