Montrose Environmental Group, Inc. - Common Shares (MEG) Institutional Ownership

13F Institutional Holders and Ownership History from Q3 2020 to Q4 2025

Type / Class
Equity / Common Shares
Symbol
MEG on NYSE
Shares outstanding
35,301,683
Price per share
$23.22
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
32,335,640
Total reported value
$802,958,597
% of total 13F portfolios
0%
Share change
-1,203,533
Value change
-$39,724,666
Number of holders
181
Price from insider filings
$23.22
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Montrose Environmental Group, Inc. - Common Shares (MEG) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BAMCO INC /NY/ 6.1% -21% $59,326,314 -$14,697,114 2,160,463 -20% Baron Capital Group, Inc. 30 Sep 2025
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 3.7% -44% $36,110,394 -$27,532,549 1,315,018 -43% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 30 Sep 2025
ALGER ASSOCIATES INC 3% $15,502,470 1,013,896 Alger Associates, Inc. 31 Dec 2024
MANAGED ACCOUNT ADVISORS LLC 2.7% -50% $22,645,696 -$19,773,845 957,130 -47% MANAGED ACCOUNT ADVISORS, LLC 30 Jun 2025

As of 31 Dec 2025, 181 institutional investors reported holding 32,335,640 shares of Montrose Environmental Group, Inc. - Common Shares (MEG). This represents 92% of the company’s total 35,301,683 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Montrose Environmental Group, Inc. - Common Shares (MEG) together control 72% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 9.2% 3,240,378 +1.7% 0% $80,458,587
BAMCO INC /NY/ 6.1% 2,160,599 +0.01% 0.15% $53,647,673
VANGUARD GROUP INC 5.6% 1,986,620 +3% 0% $49,327,774
GOLDMAN SACHS GROUP INC 4.9% 1,733,003 +129% 0.01% $43,030,464
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 4.7% 1,653,379 0% 0.06% $41,053,000
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 4.1% 1,457,574 +14% 0.01% $36,191,562
PRINCIPAL FINANCIAL GROUP INC 3.6% 1,279,714 0.02% $31,775,298
FRED ALGER MANAGEMENT, LLC 3% 1,068,555 -7.1% 0.1% $26,532,220
ALLIANCEBERNSTEIN L.P. 2.5% 893,428 -9.6% 0.01% $22,183,817
TRUIST FINANCIAL CORP 2.3% 803,926 -0.23% 0.03% $19,961,483
ROYCE & ASSOCIATES LP 2.2% 787,535 -10% 0.2% $19,554,494
GEODE CAPITAL MANAGEMENT, LLC 2.2% 774,877 +1.3% 0% $19,243,608
JANUS HENDERSON GROUP PLC 2.2% 763,892 -4% 0.01% $18,967,220
STATE STREET CORP 2.1% 725,742 -0.04% 0% $18,020,174
Stephens Investment Management Group LLC 2% 704,702 +6.6% 0.23% $17,497,751
DIMENSIONAL FUND ADVISORS LP 2% 698,089 +15% 0% $17,335,979
Legal & General Group Plc 1.8% 638,630 +3.7% 0% $15,857,184
Summit Creek Advisors LLC 1.8% 628,786 +11% 2.5% $15,612,756
ALGERT GLOBAL LLC 1.6% 566,855 +216% 0.22% $14,075,000
MORGAN STANLEY 1.6% 559,917 +16% 0% $13,902,757
Nuveen, LLC 1.5% 516,952 -15% 0% $12,835,918
FMR LLC 1.3% 452,856 +3.5% 0% $11,244,414
Avalon Trust Co 1.2% 427,549 +157% 0.69% $10,616,042
Allspring Global Investments Holdings, LLC 1.2% 408,364 0.02% $10,139,678
BANK OF AMERICA CORP /DE/ 1.1% 402,596 -57% 0% $9,996,459

Institutional Holders of Montrose Environmental Group, Inc. - Common Shares (MEG) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 32,335,640 $802,958,597 -$39,724,666 $24.83 181
2025 Q3 32,482,374 $891,955,275 -$42,853,013 $27.46 183
2025 Q2 34,086,605 $745,973,525 +$2,298,254 $21.89 156
2025 Q1 34,260,470 $488,645,404 -$1,543,592 $14.26 161
2024 Q4 33,684,566 $624,152,195 -$15,982,563 $18.55 162
2024 Q3 33,241,518 $874,533,856 -$64,374,860 $26.30 177
2024 Q2 32,671,560 $1,456,250,748 +$271,850,943 $44.56 170
2024 Q1 26,664,852 $1,043,741,328 +$14,905,585 $39.17 164
2023 Q4 26,326,387 $845,820,682 -$7,103,734 $32.13 156
2023 Q3 26,593,444 $777,859,894 -$20,210,613 $29.26 150
2023 Q2 27,101,551 $1,126,694,290 -$21,677,142 $42.12 140
2023 Q1 27,825,100 $991,905,571 -$747,187 $35.67 126
2022 Q4 27,600,410 $1,224,695,916 +$15,663,282 $44.39 130
2022 Q3 27,014,397 $909,272,726 +$10,775,907 $33.65 123
2022 Q2 26,664,744 $900,190,138 +$11,428,213 $33.76 125
2022 Q1 26,215,670 $1,387,348,574 +$27,887,612 $52.93 137
2021 Q4 25,495,607 $1,797,652,113 +$95,748,782 $70.51 140
2021 Q3 24,348,237 $1,503,149,151 +$349,353,957 $61.74 142
2021 Q2 18,735,655 $1,004,921,606 +$47,902,761 $53.66 120
2021 Q1 17,732,408 $889,566,728 +$104,436,630 $50.19 109
2020 Q4 15,956,764 $494,079,206 +$63,824,843 $30.96 98
2020 Q3 14,954,968 $356,262,393 +$356,262,392 $23.82 70