Institutional Ownership
Ameresco Inc
CUSIP 02361E108CL AAMRCQ1 2026
13D / 13G Filings
45
Schedule 13D/13G on record
Beneficial Filers
16
Distinct reporting persons
Largest Stake
78.0%
Max % of class reported
Institutional Holders
186
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
45 filings · latest Feb 10, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 10, 2026 | Grantham, Mayo, Van Otterloo &Amp; Co. LLC | 13G/A | 6.7% | 2.32M | SEC |
| 2 | Feb 10, 2026 | Wellington Management Group LLP | 13G/A | 11.2% | 3.90M | SEC |
| 3 | Nov 12, 2025 | Wellington Management Group LLP | 13G/A | 13.7% | 4.74M | SEC |
| 4 | Nov 5, 2025 | Grantham, Mayo, Van Otterloo &Amp; Co. LLC | 13G/A | 9.2% | 3.20M | SEC |
| 5 | Oct 31, 2025 | First Trust Portfolios L.P. | 13G/A | 0.8% | 270.1K | SEC |
| 6 | Oct 24, 2025 | Gagnon Securities LLC | 13G/A | 4.9% | — | SEC |
| 7 | Sep 8, 2025 | Wellington Management Group LLP | 13G/A | 11.1% | 3.85M | SEC |
| 8 | Aug 12, 2025 | Wellington Management Group LLP | 13G | 5.1% | 1.75M | SEC |
| 9 | Jul 16, 2025 | First Trust Portfolios L.P. | 13G | 5.4% | 1.87M | SEC |
| 10 | May 15, 2025 | Macquarie Group Limited | 13G/A | — | 93 | SEC |
35 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Ameresco Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Wellington Management Group LLP | 3.54M | $90.31M |
| 2 | Blackrock, Inc. | 2.46M | $62.65M |
| 3 | Grantham, Mayo, Van Otterloo & Co. LLC | 2.23M | $56.86M |
| 4 | Dimensional Fund Advisors LP | 1.44M | $36.71M |
| 5 | Vanguard Capital Management LLC | 1.36M | $34.65M |
| 6 | State Street Corp | 1.33M | $33.90M |
| 7 | D. E. Shaw & Co., Inc. | 1.27M | $32.44M |
| 8 | Royce & Associates LP | 1.25M | $31.87M |
| 9 | Dnb Asset Management As | 902.3K | $23.01M |
| 10 | Vanguard Portfolio Management LLC | 845.9K | $21.57M |