FRAMINGHAM, MA
AMERESCO, INC.AMRC— Latest position per institution from SEC 13F filings
15
Institutional holders
26.61M
Total shares held
652.18M
Estimated value
1.33M
Avg. position size
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
3.54M
Value
90.31M
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
2.46M
Value
62.65M
Filed
Mar 31, 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
2.23M
Value
56.86M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.44M
Value
36.71M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
1.33M
Value
33.90M
Filed
Mar 31, 2026
D. E. SHAW & CO., INC.
CIK 1009207
Shares
1.27M
Value
32.44M
Filed
Mar 31, 2026
ROYCE & ASSOCIATES LP
CIK 906304
Shares
1.25M
Value
31.87M
Filed
Mar 31, 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
902.29K
Value
23.01M
Filed
Mar 31, 2026
GAGNON SECURITIES LLC
CIK 1125725
Shares
840.06K
Value
21.42M
Filed
Mar 31, 2026
HANDELSBANKEN FONDER AB
CIK 1398318
Shares
815.15K
Value
20.79K
Filed
Mar 31, 2026
LORD, ABBETT & CO. LLC
CIK 728100
Shares
811.23K
Value
46.35K
Filed
Dec 31, 2022
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
792.85K
Value
20.22M
Filed
Mar 31, 2026
MORGAN STANLEY
CIK 895421
Shares
670.62K
Value
17.10M
Filed
Mar 31, 2026
SWEDBANK AB
CIK 946431
Shares
645K
Value
16.45M
Filed
Mar 31, 2026
GRANAHAN INVESTMENT MANAGEMENT, LLC
CIK 1026710
Shares
630.07K
Value
16.07M
Filed
Mar 31, 2026
FIRST EAGLE INVESTMENT MANAGEMENT, LLC
CIK 1325447
Shares
555.33K
Value
14.16M
Filed
Mar 31, 2026
LEGAL & GENERAL GROUP PLC
CIK 764068
Shares
549.21K
Value
14M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 3.54M | 90.31M | Mar 31, 2026 |
| 2 | BLACKROCK, INC. | 2012383 | 2.46M | 62.65M | Mar 31, 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 | 2.23M | 56.86M | Mar 31, 2026 |
| 6 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.44M | 36.71M | Mar 31, 2026 |
| 7 | STATE STREET CORP | 93751 | 1.33M | 33.90M | Mar 31, 2026 |
| 8 | D. E. SHAW & CO., INC. | 1009207 | 1.27M | 32.44M | Mar 31, 2026 |
| 9 | ROYCE & ASSOCIATES LP | 906304 | 1.25M | 31.87M | Mar 31, 2026 |
| 10 | STEPHENS INVESTMENT MANAGEMENT GROUP LLC | 1314440 | 1.07M | 25.10M | Dec 31, 2024 |
| 11 | DNB ASSET MANAGEMENT AS | 1456670 | 902.29K | 23.01M | Mar 31, 2026 |
| 12 | GAGNON SECURITIES LLC | 1125725 | 840.06K | 21.42M | Mar 31, 2026 |
| 13 | HANDELSBANKEN FONDER AB | 1398318 | 815.15K | 20.79K | Mar 31, 2026 |
| 14 | LORD, ABBETT & CO. LLC | 728100 | 811.23K | 46.35K | Dec 31, 2022 |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 792.85K | 20.22M | Mar 31, 2026 |
| 16 | MORGAN STANLEY | 895421 | 670.62K | 17.10M | Mar 31, 2026 |
| 17 | SWEDBANK AB | 946431 | 645K | 16.45M | Mar 31, 2026 |
| 18 | GRANAHAN INVESTMENT MANAGEMENT, LLC | 1026710 | 630.07K | 16.07M | Mar 31, 2026 |
| 19 | FIRST EAGLE INVESTMENT MANAGEMENT, LLC | 1325447 | 555.33K | 14.16M | Mar 31, 2026 |
| 20 | LEGAL & GENERAL GROUP PLC | 764068 | 549.21K | 14M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.