MISTRAS GROUP INC (MG) Institutional Shareholders
MISTRAS GROUP INC (MG) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $334.25M in MG holdings during the latest filing period.
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 $38.28M, representing an estimated gain of +13.57% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 61% 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, Royce & Associates Lp, 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
133
Total Reported Value
$334.25M
Largest Holder
Mill Road Capital Management Llc
Largest Position
$33.71M
Insider Transactions (90d)
4
Latest Filing Quarter
Q2 2026
New Institutional Positions
129
Funds Exiting Positions
0
| 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 | $38,281,459 | +$4,572,937 | +13.57% | |
| Dimensional Fund Advisors Lp | 0.01% | 1,700,793 | $29,715,235 | $33,743,733 | +$4,028,498 | +13.56% | |
| Royce & Associates Lp | 0.22% | 1,580,728 | $27,615,318 | $31,361,644 | +$3,746,326 | +13.57% | |
| Weber Capital Management Llc | 21.53% | 1,448,154 | $25,299,250 | $28,731,375 | +$3,432,125 | +13.57% | |
| Blackrock, Inc. | 0.00% | 1,166,197 | $20,373,462 | $23,137,348 | +$2,763,886 | +13.57% | |
| Ies Holdings, Inc. | 6.32% | 1,124,235 | $19,640,385 | $22,304,822 | +$2,664,437 | +13.57% | |
| Vanguard Capital Management Llc | 0.00% | 1,052,512 | $18,387,385 | $20,881,838 | +$2,494,453 | +13.57% | |
| Federated Hermes, Inc. | 0.02% | 656,032 | $11,460,879 | $13,015,675 | +$1,554,796 | +13.57% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 553,855 | $9,675,847 | $10,988,483 | +$1,312,636 | +13.57% |
| Geode Capital Management, Llc | 0.00% | 510,059 | $8,912,951 | $10,119,571 | +$1,206,620 | +13.54% | |
| Deutsche Bank Ag\ | 0.00% | 389,488 | $6,804,356 | $7,727,442 | +$923,086 | +13.57% | |
| State Street Corp | 0.00% | 385,924 | $6,742,092 | $7,656,732 | +$914,640 | +13.57% | |
| Bridgeway Capital Management, Llc | 0.11% | 354,371 | $6,190,861 | $7,030,721 | +$839,860 | +13.57% | |
| Pacific Ridge Capital Partners, Llc | 0.90% | 282,880 | $4,941,914 | $5,612,339 | +$670,425 | +13.57% | |
| Acadian Asset Management Llc | 0.01% | 276,512 | $4,825,000 | $5,485,998 | +$660,998 | +13.70% | |
| Qube Research & Technologies Ltd | 0.01% | 275,749 | $4,817,335 | $5,470,860 | +$653,525 | +13.57% | |
| Csm Advisors, Llc | 0.10% | 267,586 | $4,674,000 | $5,308,906 | +$634,906 | +13.58% | |
| Clearline Capital Lp | 0.30% | 267,460 | $4,672,526 | $5,306,406 | +$633,880 | +13.57% | |
| Essex Investment Management Co Llc | 0.59% | 257,127 | $4,492,009 | $5,101,400 | +$609,391 | +13.57% | |
| Algert Global Llc | 0.05% | 232,669 | $4,064,727 | $4,616,153 | +$551,426 | +13.57% | |
| Empowered Funds, Llc | 0.02% | 225,494 | $3,939,380 | $4,473,801 | +$534,421 | +13.57% | |
| Jb Capital Partners Lp | 0.55% | 202,243 | $3,533,185 | $4,012,501 | +$479,316 | +13.57% | |
| Northern Trust Corp | 0.00% | 201,968 | $3,528,381 | $4,007,045 | +$478,664 | +13.57% | |
| O'Shaughnessy Asset Management, Llc | 0.01% | 161,333 | $2,818,488 | $3,200,847 | +$382,359 | +13.57% | |
| Citadel Advisors Llc | 0.00% | 151,487 | $2,646,478 | $3,005,502 | +$359,024 | +13.57% | |
| Goldman Sachs Group Inc | 0.00% | 149,648 | $2,614,351 | $2,969,016 | +$354,665 | +13.57% | |
| Two Sigma Investments, Lp | 0.00% | 149,357 | $2,609,267 | $2,963,243 | +$353,976 | +13.57% | |
| Vanguard Portfolio Management Llc | 0.00% | 143,262 | $2,502,787 | $2,842,318 | +$339,531 | +13.57% | |
| Knights Of Columbus Asset Advisors Llc | 0.12% | 139,955 | $2,445,014 | $2,776,707 | +$331,693 | +13.57% | |
| Vanguard Fiduciary Trust Co | 0.00% | 130,002 | $2,271,135 | $2,579,240 | +$308,105 | +13.57% | |
| Ritholtz Wealth Management | 0.03% | 113,834 | $1,988,680 | $2,258,467 | +$269,787 | +13.57% | |
| Morgan Stanley | 0.00% | 111,207 | $1,942,786 | $2,206,347 | +$263,561 | +13.57% | |
| Ameriprise Financial Inc | 0.00% | 109,080 | $1,905,627 | $2,164,147 | +$258,520 | +13.57% | |
| Jacobs Levy Equity Management, Inc | 0.01% | 105,898 | $1,850,038 | $2,101,016 | +$250,978 | +13.57% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 102,700 | $1,794,169 | $2,037,568 | +$243,399 | +13.57% |
| Sei Investments Co | 0.00% | 101,998 | $1,781,905 | $2,023,640 | +$241,735 | +13.57% | |
| Informed Momentum Co Llc | 0.14% | 92,457 | $1,615,224 | $1,834,347 | +$219,123 | +13.57% | |
| Equitable Holdings, Inc. | 0.01% | 86,445 | $1,510,194 | $1,715,069 | +$204,875 | +13.57% | |
| Ubs Group Ag | 0.00% | 84,463 | $1,475,569 | $1,675,746 | +$200,177 | +13.57% | |
| Nuveen, Llc | 0.00% | 83,409 | $1,457,156 | $1,654,835 | +$197,679 | +13.57% | |
| Gsa Capital Partners Llp | 0.09% | 79,701 | $1,392,000 | $1,581,268 | +$189,268 | +13.60% | |
| Bank Of New York Mellon Corp | 0.00% | 79,219 | $1,383,959 | $1,571,705 | +$187,746 | +13.57% | |
| Uniplan Investment Counsel, Inc. | 0.13% | 77,889 | $1,360,733 | $1,545,318 | +$184,585 | +13.57% | |
| Manatuck Hill Partners, Llc | 0.42% | 71,900 | $1,256,093 | $1,426,496 | +$170,403 | +13.57% | |
| Raiffeisen Bank International Ag | 0.01% | 65,000 | $1,184,950 | $1,289,600 | +$104,650 | +8.83% | |
| Susquehanna International Group, Llp | 0.00% | 66,187 | $1,156,287 | $1,313,150 | +$156,863 | +13.57% | |
| Juniper Investment Company, Llc | 0.28% | 61,138 | $1,068,081 | $1,212,978 | +$144,897 | +13.57% | |
| First Trust Advisors Lp | 0.00% | 60,219 | $1,052,025 | $1,194,745 | +$142,720 | +13.57% | |
| Rbf Capital, Llc | 0.04% | 55,000 | $960,850 | $1,091,200 | +$130,350 | +13.57% | |
| American Century Companies Inc | 0.00% | 54,802 | $957,391 | $1,087,272 | +$129,881 | +13.57% |
Frequently asked questions about MG
Who owns the most MG stock?
The largest holders of MG are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MISTRAS GROUP INC (MG).
Is MG widely held by superinvestors?
Many widely followed stocks like MG appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MG is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.