Institutional Ownership
Montrose Environmental Group
CUSIP 615111101COMONTQ1 2026
13D / 13G Filings
32
Schedule 13D/13G on record
Beneficial Filers
13
Distinct reporting persons
Largest Stake
11.2%
Max % of class reported
Institutional Holders
163
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
32 filings · latest Feb 13, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 13, 2026 | Macquarie Group Limited | 13G/A | — | — | SEC |
| 2 | Nov 14, 2025 | Bamco Inc /Ny/ | 13G/A | 6.1% | 2.16M | SEC |
| 3 | Nov 12, 2025 | William Blair Investment Management, LLC | 13G/A | 3.7% | 1.32M | SEC |
| 4 | Oct 24, 2025 | Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas LLC | 13G/A | — | — | SEC |
| 5 | Aug 14, 2025 | Managed Account Advisors, LLC | 13G/A | 2.7% | 957.1K | SEC |
| 6 | Jul 30, 2025 | William Blair Investment Management, LLC | 13G/A | 6.8% | 2.32M | SEC |
| 7 | May 15, 2025 | Bamco Inc /Ny/ | 13G/A | 7.8% | 2.70M | SEC |
| 8 | May 15, 2025 | Macquarie Group Limited | 13G/A | 5.5% | 1.92M | SEC |
| 9 | May 9, 2025 | William Blair Investment Management, LLC | 13G | 5.5% | 1.90M | SEC |
| 10 | Apr 4, 2025 | Managed Account Advisors, LLC | 13G/A | 5.2% | 1.79M | SEC |
22 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Montrose Environmental Group.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 3.15M | $68.97M |
| 2 | Bamco Inc /Ny/ | 2.17M | $47.46M |
| 3 | Goldman Sachs Group Inc | 1.96M | $42.92M |
| 4 | Nomura Asset Management International Inc. | 1.53M | $33.53M |
| 5 | Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas LLC | 1.52M | $33.18M |
| 6 | Principal Financial Group Inc | 1.35M | $29.47M |
| 7 | Alliancebernstein L.P. | 1.13M | $28.08M |
| 8 | Royce & Associates LP | 954.8K | $20.90M |
| 9 | Amundi | 880.0K | $19.23M |
| 10 | Janus Henderson Group PLC | 867.0K | $18.98M |