FRAMINGHAM, MA
AMERESCO, INC.AMRC— Latest position per institution from SEC 13F filings
15
Institutional holders
29.21M
Total shares held
779.61M
Estimated value
1.46M
Avg. position size
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
3.37M
Value
93.14M
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
2.65M
Value
73.18M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
2.41M
Value
70.73M
Filed
Dec 31, 2025
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
2.40M
Value
69.12M
Filed
Jun 30, 2024
GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC
CIK 1352662
Shares
2.03M
Value
56.05M
Filed
Jun 30, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.60M
Value
44.19M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
1.60M
Value
44.19M
Filed
Jun 30, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
1.49M
Value
41.05M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.43M
Value
39.49M
Filed
Jun 30, 2026
D. E. SHAW & CO., INC.
CIK 1009207
Shares
1.26M
Value
34.73M
Filed
Jun 30, 2026
STEPHENS INVESTMENT MANAGEMENT GROUP LLC
CIK 1314440
Shares
1.07M
Value
25.10M
Filed
Dec 31, 2024
DNB ASSET MANAGEMENT AS
CIK 1456670
Shares
1.03M
Value
28.30M
Filed
Jun 30, 2026
ROYCE & ASSOCIATES LP
CIK 906304
Shares
998.18K
Value
27.55M
Filed
Jun 30, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
914.16K
Value
25.23M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
862.85K
Value
23.82M
Filed
Jun 30, 2026
HANDELSBANKEN FONDER AB
CIK 1398318
Shares
857.98K
Value
23.68K
Filed
Jun 30, 2026
GAGNON SECURITIES LLC
CIK 1125725
Shares
826.56K
Value
22.81M
Filed
Jun 30, 2026
SWEDBANK AB
CIK 946431
Shares
815.50K
Value
16.89M
Filed
Sep 30, 2026
AMERICAN CENTURY COMPANIES INC
CIK 748054
Shares
798.12K
Value
22.03M
Filed
Jun 30, 2026
LEGAL & GENERAL GROUP PLC
CIK 764068
Shares
796.27K
Value
21.98M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 3.37M | 93.14M | Jun 30, 2026 |
| 2 | BLACKROCK, INC. | 2012383 | 2.65M | 73.18M | Jun 30, 2026 |
| 3 | VANGUARD GROUP INC | 102909 | 2.41M | 70.73M | Dec 31, 2025 |
| 4 | BLACKROCK FINANCE, INC. | 1364742 | 2.40M | 69.12M | Jun 30, 2024 |
| 5 | GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC | 1352662 | 2.03M | 56.05M | Jun 30, 2026 |
| 6 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.60M | 44.19M | Jun 30, 2026 |
| 7 | STATE STREET CORP | 93751 | 1.60M | 44.19M | Jun 30, 2026 |
| 8 | MILLENNIUM MANAGEMENT LLC | 1273087 | 1.49M | 41.05M | Jun 30, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.43M | 39.49M | Jun 30, 2026 |
| 10 | D. E. SHAW & CO., INC. | 1009207 | 1.26M | 34.73M | Jun 30, 2026 |
| 11 | STEPHENS INVESTMENT MANAGEMENT GROUP LLC | 1314440 | 1.07M | 25.10M | Dec 31, 2024 |
| 12 | DNB ASSET MANAGEMENT AS | 1456670 | 1.03M | 28.30M | Jun 30, 2026 |
| 13 | ROYCE & ASSOCIATES LP | 906304 | 998.18K | 27.55M | Jun 30, 2026 |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 914.16K | 25.23M | Jun 30, 2026 |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 862.85K | 23.82M | Jun 30, 2026 |
| 16 | HANDELSBANKEN FONDER AB | 1398318 | 857.98K | 23.68K | Jun 30, 2026 |
| 17 | GAGNON SECURITIES LLC | 1125725 | 826.56K | 22.81M | Jun 30, 2026 |
| 18 | SWEDBANK AB | 946431 | 815.50K | 16.89M | Sep 30, 2026 |
| 19 | AMERICAN CENTURY COMPANIES INC | 748054 | 798.12K | 22.03M | Jun 30, 2026 |
| 20 | LEGAL & GENERAL GROUP PLC | 764068 | 796.27K | 21.98M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.