Mistras Group, Inc. 13F holders
137 funds reported a position in Mistras Group, Inc. in their 13F for the quarter ended 30 June 2026, together 19.9 million shares worth $347.1 million. Against the quarter before, 24 opened a position, 56 added, 29 trimmed and 16 sold out; together they bought a net 767,537 shares. The largest holders: Mill Road Capital Management LLC, Dimensional Fund Advisors LP and Royce & Associates LP.
Funds holding137+8 on Q1 2026
Shares they held19.9Mworth $347.1 million
Net bought on the quarter767,537 sharesabout $13.4 million at the funds' values
Funds buying to selling80 to 45opened or added, to cut or sold
Opened 24Added 56Held 28Trimmed 29Sold out 16
What each fund did in MG against its 13F for the quarter before; a change under 0.1% of a holding counts as held
Funds reporting a position in MG in their 13F, each quarter; hover a bar for the shares they held
Filed so far for the quarter to 30 September 2026
3,241 funds have filed their 13F for the quarter so far; the rest are due by 16 November 2026. Of those, 27 reported a position in Mistras Group, Inc.: 5 opened one, 9 added, 5 trimmed and 3 sold out, a net 360,291 shares bought.
The largest moves in the name among the funds that have filed, against each fund's previous 13F.
The well-known funds
Of the 44 funds followed here, 5 reported a position in Mistras Group, Inc. in a 13F for the quarter ended 30 June 2026. The largest: Geode Capital Management, 510,059 shares worth $8.9 million, 0.0% of its reported book. Sold out: Millennium Management. In the quarter, 2 funds added or opened a position and 4 trimmed or sold out; together they bought a net 44,959 shares, about $785,434 at the funds' own value per share on 30 June 2026. A change under 0.1% of a holding counts as held.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 510,059 | $8.9 million | 0.0% | +156,648 | added | 30 June 2026 | 13F |
| Citadel Advisors | 151,487 | $2.6 million | 0.0% | +25,253 | added | 30 June 2026 | 13F |
| Two Sigma Investments | 149,357 | $2.6 million | 0.0% | -81,968 | trimmed | 30 June 2026 | 13F |
| Renaissance Technologies | 102,700 | $1.8 million | 0.0% | -17,800 | trimmed | 30 June 2026 | 13F |
| FMR LLC | 5,299 | $92,568 | 0.0% | -206 | trimmed | 30 June 2026 | 13F |
| Millennium Management | 0 | $0 | 0.0% | -36,968 | exited | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.The largest holders
| Fund | Shares | Share of all | Value | Of its book | Change in shares | Filing |
|---|---|---|---|---|---|---|
| Mill Road Capital Management LLC | 1,929,509 | 9.71% | $33.7 million | 16.64% | +58,929 | 13F |
| Dimensional Fund Advisors LP | 1,700,793 | 8.56% | $29.7 million | 0.01% | -2,888 | 13F |
| Royce & Associates LP | 1,580,728 | 7.95% | $27.6 million | 0.22% | +47,676 | 13F |
| Weber Capital Management LLC | 1,448,154 | 7.29% | $25.3 million | 21.53% | -8,815 | 13F |
| BlackRock, Inc. | 1,166,197 | 5.87% | $20.4 million | 0.00% | +306,745 | 13F |
| IES Holdings, Inc. | 1,124,235 | 5.66% | $19.6 million | 6.32% | +3,690 | 13F |
| First Eagle Investment Management, LLC | 1,107,710 | 5.57% | $19.4 million | 0.02% | 13F | |
| Vanguard Capital Management LLC | 1,052,512 | 5.30% | $18.4 million | 0.00% | +122,334 | 13F |
| Federated Hermes, Inc. | 656,032 | 3.30% | $11.5 million | 0.02% | no change | 13F |
| Geode Capital Management, LLC | 510,059 | 2.57% | $8.9 million | 0.00% | +156,648 | 13F |
| Deutsche Bank AG | 389,488 | 1.96% | $6.8 million | 0.00% | +10,034 | 13F |
| State Street Corp. | 385,924 | 1.94% | $6.7 million | 0.00% | +73,760 | 13F |
| Bridgeway Capital Management, LLC | 354,371 | 1.78% | $6.2 million | 0.11% | no change | 13F |
| Pacific Ridge Capital Partners, LLC | 282,880 | 1.42% | $4.9 million | 0.90% | -2,394 | 13F |
| Acadian Asset Management LLC | 276,512 | 1.39% | $4.8 million | 0.01% | +118,177 | 13F |
| Qube Research & Technologies Ltd | 275,749 | 1.39% | $4.8 million | 0.01% | +57,703 | 13F |
| CSM Advisors, LLC | 267,586 | 1.35% | $4.7 million | 0.10% | -295 | 13F |
| Clearline Capital LP | 267,460 | 1.35% | $4.7 million | 0.30% | -286,629 | 13F |
| Essex Investment Management Co. LLC | 257,127 | 1.29% | $4.5 million | 0.59% | -11,440 | 13F |
| Algert Global LLC | 232,669 | 1.17% | $4.1 million | 0.05% | +53,379 | 13F |
| Empowered Funds, LLC | 225,494 | 1.13% | $3.9 million | 0.02% | no change | 13F |
| JB Capital Partners LP | 202,243 | 1.02% | $3.5 million | 0.55% | no change | 13F |
| Northern Trust Corp. | 201,968 | 1.02% | $3.5 million | 0.00% | +42,217 | 13F |
| O'shaughnessy Asset Management, LLC | 161,333 | 0.81% | $2.8 million | 0.01% | +26,165 | 13F |
| Citadel Advisors LLC | 151,487 | 0.76% | $2.6 million | 0.00% | +25,253 | 13F |
| Goldman Sachs Group Inc. | 149,648 | 0.75% | $2.6 million | 0.00% | +18,272 | 13F |
| Two Sigma Investments, LP | 149,357 | 0.75% | $2.6 million | 0.00% | -81,968 | 13F |
| Vanguard Portfolio Management LLC | 143,262 | 0.72% | $2.5 million | 0.00% | +79,449 | 13F |
| Knights of Columbus Asset Advisors LLC | 139,955 | 0.70% | $2.4 million | 0.12% | -126 | 13F |
| Vanguard Fiduciary Trust Co. | 130,002 | 0.65% | $2.3 million | 0.00% | +17,725 | 13F |
| Ritholtz Wealth Management | 113,834 | 0.57% | $2.0 million | 0.03% | +9,082 | 13F |
| Morgan Stanley | 111,207 | 0.56% | $1.9 million | 0.00% | +6,936 | 13F |
| Ameriprise Financial Inc. | 109,080 | 0.55% | $1.9 million | 0.00% | +1,705 | 13F |
| Jacobs Levy Equity Management, Inc. | 105,898 | 0.53% | $1.9 million | 0.01% | -8,579 | 13F |
| Renaissance Technologies LLC | 102,700 | 0.52% | $1.8 million | 0.00% | -17,800 | 13F |
| Sei Investments Co. | 101,998 | 0.51% | $1.8 million | 0.00% | -102,842 | 13F |
| Informed Momentum Co LLC | 92,457 | 0.47% | $1.6 million | 0.14% | -3,806 | 13F |
| Legato Capital Management LLC | 86,529 | 0.44% | $1.5 million | 0.12% | +2,584 | 13F |
| Equitable Holdings, Inc. | 86,445 | 0.43% | $1.5 million | 0.01% | new | 13F |
| UBS Group AG | 84,463 | 0.42% | $1.5 million | 0.00% | +67,702 | 13F |
| Nuveen, LLC | 83,409 | 0.42% | $1.5 million | 0.00% | +19,525 | 13F |
| Gsa Capital Partners LLP | 79,701 | 0.40% | $1.4 million | 0.09% | +30,936 | 13F |
| Bank of New York Mellon Corp | 79,219 | 0.40% | $1.4 million | 0.00% | +16,090 | 13F |
| Uniplan Investment Counsel, Inc. | 77,889 | 0.39% | $1.4 million | 0.13% | new | 13F |
| Manatuck Hill Partners, LLC | 71,900 | 0.36% | $1.3 million | 0.42% | +21,900 | 13F |
| Raiffeisen Bank International AG | 65,000 | 0.33% | $1.2 million | 0.01% | no change | 13F |
| Susquehanna International Group, LLP | 66,187 | 0.33% | $1.2 million | 0.00% | new | 13F |
| Juniper Investment Company, LLC | 61,138 | 0.31% | $1.1 million | 0.28% | new | 13F |
| First Trust Advisors LP | 60,219 | 0.30% | $1.1 million | 0.00% | +3,009 | 13F |
| Cambridge Investment Research Advisors, Inc. | 57,184 | 0.29% | $999,000 | 0.00% | +30,963 | 13F |
The 50 largest of the 137 funds that reported a position in MG in their 13F for the quarter ended 30 June 2026, by the value each reported.
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Share of all is the fund's part of all the shares the funds reported. Change is shares against the fund's 13F for the quarter before. A 13F lists a manager's long positions in US-listed shares at the quarter's end. What is a 13F?Options the funds reported on MG
| Fund | Option | Shares under the options | Value of those shares | Quarter ended | Filing |
|---|---|---|---|---|---|
| Citadel Advisors | Calls | 190,300 | $3.3 million | 30 June 2026 | 13F |
| Citadel Advisors | Puts | 124,100 | $2.2 million | 30 June 2026 | 13F |
A 13F lists calls and puts by the shares they cover and what those shares were worth at the quarter's end, not what the options cost.
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They are not counted in the holdings above. A put gains when the stock falls, a call when it rises, and a fund may hold either to hedge.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 7 October 2026 | 13D/A | Stephanie Athena Foglia and 2 others | 6.1 million | 19.1% | 17 September 2026 | Item 4 of the Schedule 13D is hereby amended and restated in its entirety as follows: On September 17, 2026, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Athena Purchaser, LLC ("Parent") and Athena M | EDGAR |
| 21 September 2026 | 13D/A | Stephanie Athena Foglia and 2 others | 6.1 million | 19.1% | 17 September 2026 | Item 4 of the Schedule 13D is hereby amended and restated in its entirety as follows: On September 17, 2026, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Athena Purchaser, LLC ("Parent") and Athena M | EDGAR |
| 18 September 2026 | 13D/A | Mill Road Capital III, L.P. and 2 others | 1.9 million | 6.1% | 16 September 2026 | EDGAR | |
| 14 September 2026 | 13D/A | Stephanie Athena Foglia and 1 other | 5.5 million | 17.4% | 10 September 2026 | The Reporting Persons acquired, and presently beneficially own, shares of the issuer's common stock for investment purposes. None of the Reporting Persons currently has any plans or proposals that would result in or relate to any of the tra | EDGAR |
| 13 August 2026 | 13G/A | Aspasia Felice Vahaviolos and 1 other | 6.1 million | 19.2% | 30 June 2026 | passive, under 20% (13d-1(c)) | EDGAR |
| 12 June 2026 | 13D/A | Stephanie Foglia and 1 other | 5.9 million | 18.6% | 10 June 2026 | The Reporting Persons acquired, and presently beneficially own, shares of the issuer's common stock for investment purposes. None of the Reporting Persons currently has any plans or proposals that would result in or relate to any of the tra | EDGAR |
| 4 June 2026 | 13D/A | Stephanie Foglia and 1 other | 6.3 million | 19.9% | 27 April 2026 | The Reporting Persons acquired, and presently beneficially own, shares of the issuer's common stock for investment purposes. None of the Reporting Persons currently has any plans or proposals that would result in or relate to any of the tra | EDGAR |
| 23 April 2026 | 13D/A | Mill Road Capital III, L.P. and 2 others | 1.9 million | 5.9% | 21 April 2026 | EDGAR | |
| 31 March 2026 | 13G/A | Kristy Kyriakopoulos and 1 other | 1.6 million | 5.1% | 8 July 2025 | passive, under 20% (13d-1(c)) | EDGAR |
| 31 March 2026 | 13G | Aspasia Vahaviolos and 1 other | 6.1 million | 19.3% | 31 December 2025 | passive, under 20% (13d-1(c)) | EDGAR |
| 31 March 2026 | 13D | Stephanie Foglia and 1 other | 6.9 million | 21.7% | 31 December 2025 | The Reporting Persons acquired, and presently beneficially own, shares of the issuer's common stock for investment purposes. None of the Reporting Persons currently has any plans or proposals that would result in or relate to any of the tra | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short. 13D and 13GFails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 24 September 2026 | 813 | $20.94 | SEC |
| 15 September 2026 | 3,849 | $19.53 | SEC |
| 8 September 2026 | 1,151 | $19.12 | SEC |
| 27 August 2026 | 42 | $18.80 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.