MISTRAS GROUP INC (MG) Top 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 March 31, 2026. The institutional investors covered on this page collectively reported approximately $257.53M 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 $27.65M in its March 31, 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 $34.36M, representing an estimated gain of +24.29% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 64% 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
126
Total Reported Value
$257.53M
Largest Holder
Mill Road Capital Management Llc
Largest Position
$27.65M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
141
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 | 14.49% | 1,870,580 | $27,647,172 | $34,362,555 | +$6,715,383 | +24.29% | |
| Dimensional Fund Advisors Lp | 0.01% | 1,703,681 | $25,180,276 | $31,296,620 | +$6,116,344 | +24.29% | |
| Royce & Associates Lp | 0.22% | 1,533,052 | $22,658,509 | $28,162,165 | +$5,503,656 | +24.29% | |
| Weber Capital Management Llc | 21.51% | 1,456,969 | $21,534,002 | $26,764,521 | +$5,230,519 | +24.29% | |
| Ies Holdings, Inc. | 7.74% | 1,120,545 | $16,561,655 | $20,584,412 | +$4,022,757 | +24.29% | |
| Vanguard Capital Management Llc | 0.00% | 930,178 | $13,748,031 | $17,087,370 | +$3,339,339 | +24.29% | |
| Blackrock, Inc. | 0.00% | 859,452 | $12,702,701 | $15,788,133 | +$3,085,432 | +24.29% | |
| Federated Hermes, Inc. | 0.02% | 656,032 | $9,696,153 | $12,051,308 | +$2,355,155 | +24.29% | |
| Clearline Capital Lp | 0.64% | 554,089 | $8,189,435 | $10,178,615 | +$1,989,180 | +24.29% | |
| Invenomic Capital Management Lp | 0.31% | 452,614 | $6,689,635 | $8,314,519 | +$1,624,884 | +24.29% | |
| Deutsche Bank Ag\ | 0.00% | 379,454 | $5,608,330 | $6,970,570 | +$1,362,240 | +24.29% | |
| Bridgeway Capital Management, Llc | 0.11% | 354,371 | $5,237,603 | $6,509,795 | +$1,272,192 | +24.29% | |
| Geode Capital Management, Llc | 0.00% | 353,411 | $5,225,171 | $6,492,160 | +$1,266,989 | +24.25% | |
| State Street Corp | 0.00% | 312,164 | $4,613,784 | $5,734,453 | +$1,120,669 | +24.29% | |
| Pacific Ridge Capital Partners, Llc | 0.91% | 285,274 | $4,216,350 | $5,240,483 | +$1,024,133 | +24.29% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.01% | 281,532 | $4,161,043 | $5,171,743 | +$1,010,700 | +24.29% |
| Essex Investment Management Co Llc | 0.63% | 268,567 | $3,969,420 | $4,933,576 | +$964,156 | +24.29% | |
| Two Sigma Investments, Lp | 0.00% | 231,325 | $3,418,983 | $4,249,440 | +$830,457 | +24.29% | |
| Empowered Funds, Llc | 0.02% | 225,494 | $3,332,801 | $4,142,325 | +$809,524 | +24.29% | |
| Qube Research & Technologies Ltd | 0.00% | 218,046 | $3,222,720 | $4,005,505 | +$782,785 | +24.29% | |
| Sei Investments Co | 0.00% | 204,840 | $3,027,535 | $3,762,911 | +$735,376 | +24.29% | |
| Jb Capital Partners Lp | 0.51% | 202,243 | $2,989,152 | $3,715,204 | +$726,052 | +24.29% | |
| Northern Trust Corp | 0.00% | 159,751 | $2,361,119 | $2,934,626 | +$573,507 | +24.29% | |
| Knights Of Columbus Asset Advisors Llc | 0.12% | 140,081 | $2,070,397 | $2,573,288 | +$502,891 | +24.29% | |
| O'Shaughnessy Asset Management, Llc | 0.01% | 135,168 | $1,997,783 | $2,483,036 | +$485,253 | +24.29% | |
| Goldman Sachs Group Inc | 0.00% | 131,376 | $1,941,737 | $2,413,377 | +$471,640 | +24.29% | |
| Citadel Advisors Llc | 0.00% | 126,234 | $1,865,738 | $2,318,919 | +$453,181 | +24.29% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 120,500 | $1,780,990 | $2,213,585 | +$432,595 | +24.29% |
| Inspire Investing, Llc | 0.14% | 115,815 | $1,711,746 | $2,127,522 | +$415,776 | +24.29% | |
| Jacobs Levy Equity Management, Inc | 0.01% | 114,477 | $1,691,970 | $2,102,942 | +$410,972 | +24.29% | |
| Vanguard Fiduciary Trust Co | 0.00% | 112,277 | $1,659,454 | $2,062,528 | +$403,074 | +24.29% | |
| Ameriprise Financial Inc | 0.00% | 107,375 | $1,587,003 | $1,972,479 | +$385,476 | +24.29% | |
| Ritholtz Wealth Management | 0.03% | 104,752 | $1,548,235 | $1,924,294 | +$376,059 | +24.29% | |
| Morgan Stanley | 0.00% | 104,271 | $1,541,125 | $1,915,458 | +$374,333 | +24.29% | |
| Informed Momentum Co Llc | 0.16% | 96,263 | $1,422,767 | $1,768,351 | +$345,584 | +24.29% | |
| D. E. Shaw & Co., Inc. | 0.00% | 86,031 | $1,271,538 | $1,580,389 | +$308,851 | +24.29% | |
| Lazard Asset Management Llc | 0.00% | 70,369 | $1,040,054 | $1,292,679 | +$252,625 | +24.29% | |
| Raiffeisen Bank International Ag | 0.01% | 65,000 | $949,000 | $1,194,050 | +$245,050 | +25.82% | |
| Nuveen, Llc | 0.00% | 63,884 | $944,206 | $1,173,549 | +$229,343 | +24.29% | |
| Vanguard Portfolio Management Llc | 0.00% | 63,813 | $943,156 | $1,172,245 | +$229,089 | +24.29% | |
| Bank Of New York Mellon Corp | 0.00% | 63,129 | $933,044 | $1,159,680 | +$226,636 | +24.29% | |
| First Trust Advisors Lp | 0.00% | 57,210 | $845,563 | $1,050,948 | +$205,385 | +24.29% | |
| Rbf Capital, Llc | 0.04% | 55,000 | $812,900 | $1,010,350 | +$197,450 | +24.29% | |
| Manatuck Hill Partners, Llc | 0.24% | 50,000 | $739,000 | $918,500 | +$179,500 | +24.29% | |
| Jane Street Group, Llc | 0.00% | 49,764 | $735,512 | $914,165 | +$178,653 | +24.29% | |
| American Century Companies Inc | 0.00% | 48,798 | $721,234 | $896,419 | +$175,185 | +24.29% | |
| Trexquant Investment Lp | 0.00% | 43,928 | $649,256 | $806,957 | +$157,701 | +24.29% | |
| Wealth Enhancement Advisory Services, Llc | 0.00% | 40,234 | $615,580 | $739,099 | +$123,519 | +20.07% | |
| Millennium Management Llc | 0.00% | 36,968 | $546,387 | $679,102 | +$132,715 | +24.29% | |
| Values First Advisors, Inc. | 0.27% | 35,327 | $522,131 | $648,957 | +$126,826 | +24.29% |
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.