Latest Period
Q4 2025
Security Snapshot
Montrose Environmental Group, Inc. - Common Stock (MEG) Institutional Ownership
CUSIP: 615111101
13F Institutional Holders and Ownership History from Q3 2020 to Q1 2026
Institutions Reporting
183
Shares (Excl. Options)
32,419,091
Price
$24.83
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- Type / Class
- Equity / Common Stock
- Symbol
- MEG on NYSE
- Shares outstanding
- 35,301,683
- Price per share
- $21.89
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 32,419,091
- Total reported value
- $805,030,041
- % of total 13F portfolios
- 0%
- Share change
- -1,216,782
- Value change
- -$40,053,340
- Number of holders
- 183
- Price from insider filings
- $21.89
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- MEG - Montrose Environmental Group, Inc. - Common Stock is tracked under CUSIP 615111101.
- 183 institutions reported positions in Q4 2025.
- 4 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 183 to 56 between Q4 2025 and Q1 2026.
- Reported value moved from $805,030,041 to $167,619,747.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 183 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 615111101?
CUSIP 615111101 identifies MEG - Montrose Environmental Group, Inc. - Common Stock in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 615111101:
Significant Owners of Montrose Environmental Group, Inc. - Common Stock (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, 183 institutional investors reported holding 32,419,091 shares of Montrose Environmental Group, Inc. - Common Stock (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 Stock (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 Stock (MEG) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 7,664,680 | $167,619,747 | +$2,309,338 | $21.89 | 56 |
| 2025 Q4 | 32,419,091 | $805,030,041 | -$40,053,340 | $24.83 | 183 |
| 2025 Q3 | 32,482,374 | $891,955,275 | -$42,853,644 | $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 |