MONTROSE ENVIRONMENTAL GROUP (MEG) Institutional Shareholders
MONTROSE ENVIRONMENTAL GROUP (MEG) 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 $769.05M in MEG holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of MEG tracked by InsiderSet, reporting ownership valued at approximately $66.19M 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 $68.94M, representing an estimated gain of +4.16% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 49% of the total disclosed MEG value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Bamco Inc, Nomura Asset Management International Inc., and several other long-term asset managers with concentrated positions in MONTROSE ENVIRONMENTAL GROUP (MEG).
This page ranks the largest institutional MEG 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
149
Total Reported Value
$769.05M
Largest Holder
Blackrock, Inc.
Largest Position
$66.19M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
77
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 3,274,887 | $66,185,463 | $68,936,371 | +$2,750,908 | +4.16% | |
| Bamco Inc | 0.06% | 2,137,406 | $43,196,975 | $44,992,396 | +$1,795,421 | +4.16% | |
| Nomura Asset Management International Inc. | 0.06% | 2,097,249 | $42,385,000 | $44,147,091 | +$1,762,091 | +4.16% | |
| Goldman Sachs Group Inc | 0.00% | 1,930,869 | $39,022,862 | $40,644,792 | +$1,621,930 | +4.16% | |
| Corvex Management Lp | 1.11% | 1,770,000 | $35,771,700 | $37,258,500 | +$1,486,800 | +4.16% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.01% | 1,515,671 | $33,178,040 | $31,904,875 | -$1,273,165 | -3.84% | |
| Alliancebernstein L.P. | 0.01% | 1,490,124 | $32,618,814 | $31,367,110 | -$1,251,704 | -3.84% | |
| Vanguard Capital Management Llc | 0.00% | 1,453,439 | $29,374,002 | $30,594,891 | +$1,220,889 | +4.16% | |
| Fmr Llc | 0.00% | 1,443,390 | $29,170,912 | $30,383,360 | +$1,212,448 | +4.16% | |
| Nomura Holdings Inc | 0.11% | 1,249,241 | $25,247,161 | $26,296,523 | +$1,049,362 | +4.16% | |
| Principal Financial Group Inc | 0.01% | 1,244,046 | $25,142,169 | $26,187,168 | +$1,044,999 | +4.16% | |
| Royce & Associates Lp | 0.18% | 1,094,077 | $22,111,296 | $23,030,321 | +$919,025 | +4.16% | |
| Dimensional Fund Advisors Lp | 0.00% | 1,004,066 | $20,292,821 | $21,135,589 | +$842,768 | +4.15% | |
| Janus Henderson Group Plc | 0.01% | 867,042 | $18,979,041 | $18,251,234 | -$727,807 | -3.83% | |
| Ubs Group Ag | 0.00% | 927,315 | $18,741,036 | $19,519,981 | +$778,945 | +4.16% | |
| Geode Capital Management, Llc | 0.00% | 869,267 | $17,571,175 | $18,298,070 | +$726,895 | +4.14% | |
| Legal & General Group Plc | 0.00% | 817,998 | $16,531,739 | $17,218,858 | +$687,119 | +4.16% | |
| State Street Corp | 0.00% | 798,858 | $16,144,920 | $16,815,961 | +$671,041 | +4.16% | |
| Truist Financial Corp | 0.02% | 792,718 | $16,020,831 | $16,686,714 | +$665,883 | +4.16% | |
| Stephens Investment Management Group Llc | 0.16% | 736,768 | $14,890,081 | $15,508,966 | +$618,885 | +4.16% | |
| Morgan Stanley | 0.00% | 618,246 | $12,494,765 | $13,014,078 | +$519,313 | +4.16% | |
| Dekabank Deutsche Girozentrale | 0.02% | 505,697 | $10,776,000 | $10,644,922 | -$131,078 | -1.22% | |
| Millennium Management Llc | 0.01% | 441,155 | $8,915,743 | $9,286,313 | +$370,570 | +4.16% | |
| Northern Trust Corp | 0.00% | 401,858 | $8,121,551 | $8,459,111 | +$337,560 | +4.16% | |
| Allspring Global Investments Holdings, Llc | 0.01% | 383,435 | $7,749,221 | $8,071,307 | +$322,086 | +4.16% | |
| Assenagon Asset Management S.A. | 0.01% | 357,776 | $7,230,653 | $7,531,185 | +$300,532 | +4.16% | |
| Arrowmark Colorado Holdings Llc | 0.29% | 339,464 | $6,860,567 | $7,145,717 | +$285,150 | +4.16% | |
| Fisher Asset Management, Llc | 0.00% | 332,025 | $6,710,224 | $6,989,126 | +$278,902 | +4.16% | |
| Private Capital Management, Llc | 0.54% | 297,305 | $6,008,534 | $6,258,270 | +$249,736 | +4.16% | |
| Russell Investments Group, Ltd. | 0.01% | 294,923 | $5,960,394 | $6,208,129 | +$247,735 | +4.16% | |
| Tudor Investment Corp Et Al | 0.02% | 285,428 | $5,768,500 | $6,008,259 | +$239,759 | +4.16% | |
| Vanguard Portfolio Management Llc | 0.00% | 280,914 | $5,677,272 | $5,913,240 | +$235,968 | +4.16% | |
| Bank Of America Corp | 0.00% | 276,662 | $5,591,339 | $5,823,735 | +$232,396 | +4.16% | |
| Summit Creek Advisors Llc | 1.89% | 274,713 | $5,551,950 | $5,782,709 | +$230,759 | +4.16% | |
| Centerbook Partners Lp | 0.26% | 264,299 | $5,341,483 | $5,563,494 | +$222,011 | +4.16% | |
| Granahan Investment Management, Llc | 0.19% | 259,703 | $5,248,598 | $5,466,748 | +$218,150 | +4.16% | |
| Charles Schwab Investment Management Inc | 0.00% | 239,951 | $4,849,410 | $5,050,969 | +$201,559 | +4.16% | |
| Vanguard Fiduciary Trust Co | 0.00% | 221,229 | $4,471,038 | $4,656,870 | +$185,832 | +4.16% | |
| Raiffeisen Bank International Ag | 0.05% | 200,000 | $4,082,000 | $4,210,000 | +$128,000 | +3.14% | |
| Invesco Ltd. | 0.00% | 197,296 | $3,987,352 | $4,153,081 | +$165,729 | +4.16% | |
| Citadel Advisors Llc | 0.00% | 182,185 | $3,681,959 | $3,834,994 | +$153,035 | +4.16% | |
| Panagora Asset Management Inc | 0.01% | 181,929 | $3,676,785 | $3,829,605 | +$152,820 | +4.16% | |
| Global Alpha Capital Management Ltd. | 0.21% | 173,335 | $3,503,100 | $3,648,702 | +$145,602 | +4.16% | |
| Blair William & Co/Il | 0.01% | 173,037 | $3,497,078 | $3,642,429 | +$145,351 | +4.16% | |
| Nuveen, Llc | 0.00% | 158,617 | $3,205,650 | $3,338,888 | +$133,238 | +4.16% | |
| Penn Capital Management Company, Llc | 0.18% | 138,744 | $2,804,016 | $2,920,561 | +$116,545 | +4.16% | |
| Rockefeller Capital Management L.P. | 0.00% | 131,010 | $2,647,712 | $2,757,761 | +$110,049 | +4.16% | |
| Nordea Investment Management Ab | 0.00% | 124,250 | $2,496,182 | $2,615,463 | +$119,281 | +4.78% | |
| Nexpoint Asset Management, L.P. | 0.15% | 110,353 | $2,230,234 | $2,322,931 | +$92,697 | +4.16% | |
| Op Asset Management Ltd | 0.03% | 80,976 | $2,223,600 | $1,704,545 | -$519,055 | -23.34% |
Frequently asked questions about MEG
Who owns the most MEG stock?
The largest holders of MEG 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 MONTROSE ENVIRONMENTAL GROUP (MEG).
Is MEG widely held by superinvestors?
Many widely followed stocks like MEG appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MEG 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.