Security Snapshot

Ameresco, Inc. - Class A Common Stock (AMRC) Institutional Ownership

CUSIP: 02361E108

13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026

Latest Period

Q2 2026

Institutions Reporting

183

Shares (Excl. Options)

34,745,504

Price

$27.60

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Latest holder snapshot 5 signals
Portfolio coverage rank
0%
Share change
+1,697,618
Value change
+$48,236,358
Number of holders
183
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
35,257,320
SEC-reported price per share
$20.66
Insider filing price
$20.66
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors

Key facts

  • AMRC - Ameresco, Inc. - Class A Common Stock is tracked under CUSIP 02361E108.
  • 183 institutions reported positions in Q2 2026.
  • 9 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 186 to 183 between Q1 2026 and Q2 2026.
  • SEC-reported value moved from $844,523,184 to $957,203,755.

Research use

  • 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.

Evidence

Source: SEC Form 13F

Latest holder context comes from 183 institutions filings for Q2 2026.

Open SEC evidence

Security key

02361E108

Latest holder period

Q2 2026

13F holders

183

13D/G owners

9

CIK / CUSIP context first

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
9
Security
AMRC
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Sakellaris George P 40% $208,479,798 20,723,638 Sakellaris George P 31 Dec 2024
WELLINGTON MANAGEMENT GROUP LLP 10% -9.1% $93,497,633 -$9,497,558 3,541,577 -9.2% Wellington Management Group LLP 31 Mar 2026
Grantham, Mayo, Van Otterloo & Co. LLC 6.7% -28% $67,994,154 -$25,737,125 2,323,792 -27% Grantham, Mayo, Van Otterloo & Co. LLC 31 Dec 2025
MILLENNIUM MANAGEMENT LLC 5.2% $50,126,264 1,816,169 Millennium Management LLC 17 Jul 2026
GAGNON SECURITIES LLC 5% +2% $36,420,812 +$940,485 1,762,866 +2.7% Neil Gagnon 20 Aug 2026
Gagnon Neil 5% $17,486,222 1,738,193 Neil Gagnon 03 Mar 2025
Handelsbanken Fonder AB 4.9% $16,865,610 1,676,502 Handelsbanken Fonder AB 30 Sep 2024
FIRST TRUST PORTFOLIOS LP 0.78% -93% $9,071,167 -$53,793,985 270,136 -86% First Trust Portfolios L.P. 30 Sep 2025
MACQUARIE GROUP LTD 0% -107% $936 -$18,566,022 93 -100% Macquarie Group Limited 31 Mar 2025

As of 30 Jun 2026, 183 institutional investors reported holding 34,745,504 shares of Ameresco, Inc. - Class A Common Stock (AMRC). This represents 99% of the company’s total 35,257,320 outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
78%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
WELLINGTON MANAGEMENT GROUP LLP 9.6% 3,374,767 -4.7% 0.02% $93,143,570
BlackRock, Inc. 7.5% 2,651,574 +7.9% 0% $73,183,430
Grantham, Mayo, Van Otterloo & Co. LLC 5.8% 2,030,950 -8.9% 0.13% $56,054,220
DIMENSIONAL FUND ADVISORS LP 4.5% 1,601,338 +11% 0.01% $44,194,239
STATE STREET CORP 4.5% 1,601,127 +20% 0% $44,191,105
MILLENNIUM MANAGEMENT LLC 4.2% 1,487,282 +489% 0.03% $41,048,983
VANGUARD CAPITAL MANAGEMENT LLC 4.1% 1,430,762 +5.3% 0% $39,489,031
D. E. Shaw & Co., Inc. 3.6% 1,258,266 -1.1% 0.02% $34,728,141
DNB Asset Management AS 2.9% 1,025,498 +14% 0.08% $28,303,745
ROYCE & ASSOCIATES LP 2.8% 998,183 -20% 0.22% $27,549,851
VANGUARD PORTFOLIO MANAGEMENT LLC 2.6% 914,162 +8.1% 0% $25,230,871
GEODE CAPITAL MANAGEMENT, LLC 2.4% 862,848 +8.8% 0% $23,818,909
Handelsbanken Fonder AB 2.4% 857,979 +5.3% 0.07% $23,680,000
GAGNON SECURITIES LLC 2.3% 826,562 -1.6% 4.4% $22,813,111
AMERICAN CENTURY COMPANIES INC 2.3% 798,121 +52% 0.01% $22,028,140
Legal & General Group Plc 2.3% 796,268 +45% 0% $21,976,997
First Eagle Investment Management, LLC 2.1% 749,081 +35% 0.03% $20,674,636
UBS Group AG 2.1% 726,028 +74% 0% $20,038,373
Swedbank AB 2% 718,000 +11% 0.02% $19,816,800
MORGAN STANLEY 1.8% 648,021 -3.4% 0% $17,885,380
Redwood Grove Capital, LLC 1.5% 543,525 +16% 3.8% $15,001,290
Bandera Partners LLC 1.4% 476,309 0% 4.3% $12,145,880
Gagnon Advisors, LLC 1.3% 472,798 0% 8.3% $13,049,225
ROYAL BANK OF CANADA 1.2% 418,879 -17% 0% $11,561,000
MACKENZIE FINANCIAL CORP 1.1% 371,053 0.01% $10,241,063

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q2 34,745,504 $957,203,755 +$48,236,358 $27.60 183
2026 Q1 33,129,579 $844,523,184 -$8,254,927 $25.50 186
2025 Q4 33,168,367 $970,753,355 -$20,991,311 $29.29 188
2025 Q3 33,578,261 $1,128,241,586 +$51,896,128 $33.58 184
2025 Q2 32,594,338 $495,167,111 +$31,308,024 $15.19 162
2025 Q1 30,870,224 $372,937,868 -$38,123,941 $12.08 172
2024 Q4 31,818,622 $747,184,485 -$36,263,264 $23.48 176
2024 Q3 32,379,110 $1,227,496,721 -$19,506,810 $37.94 180
2024 Q2 32,883,731 $951,179,817 +$52,255,741 $28.81 182
2024 Q1 31,447,732 $758,060,120 -$12,958,533 $24.13 177
2023 Q4 32,069,637 $1,015,431,596 -$45,110,023 $31.67 176
2023 Q3 33,378,145 $1,285,384,679 -$2,213,378 $38.56 186
2023 Q2 33,049,458 $1,607,197,415 +$73,729,061 $48.63 197
2023 Q1 31,475,327 $1,544,339,598 +$18,827,966 $49.22 203
2022 Q4 30,819,958 $1,762,065,476 +$6,681,122 $57.14 212
2022 Q3 30,552,867 $2,029,445,661 -$4,607,606 $66.48 210
2022 Q2 30,690,156 $1,394,967,127 +$63,650,146 $45.56 203
2022 Q1 29,026,816 $2,310,696,635 +$165,539,459 $79.50 194
2021 Q4 26,834,159 $2,183,667,088 +$35,403,958 $81.44 209
2021 Q3 26,635,083 $1,556,286,092 +$47,037,026 $58.43 188
2021 Q2 25,820,272 $1,621,710,890 +$57,021,305 $62.72 184
2021 Q1 25,090,420 $1,218,569,980 +$191,804,660 $48.63 198
2020 Q4 20,729,091 $1,082,858,555 +$36,597,757 $52.24 194
2020 Q3 19,205,214 $641,442,542 +$2,471,241 $33.40 144
2020 Q2 19,164,440 $532,362,006 +$25,962,492 $27.78 120
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