13F Insight
DOSSIER · 13F Holders · Q1 2026High-convictionMulti-bagger
AMRC

AMERESCO INC CL A COMMON STOCK

185 institutions still hold AMERESCO INC CL A COMMON STOCK as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 02361E108·185 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 9.3%
vs prior quarter
13F value held
$587M
64.0% inst. owned
of float
Holders
185
+56 QoQ
filers reporting
Activity
+25 / −6
+949 added · −830 reduced
this quarter
Concentration
15.39%
WELLINGTON MANAGEMENT GROUP LLP #1
top holder share
AI Holders Summary · Q1 2026

185 institutions reported AMRC in Q1 2026. WELLINGTON MANAGEMENT GROUP LLP leads at 15.4% of the visible book. +56 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$90M3.5M0.02%Q1 202602
BlackRock, Inc.
CIK 0002012383
$63M2.5M0.00%Q1 202603
Grantham, Mayo, Van Otterloo & Co. LLC
CIK 0001352662
$57M2.2M0.15%Q1 202604
D. E. Shaw & Co., Inc.
CIK 0001009207
$37M1.3M0.02%Q4 202505
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$37M1.4M0.01%Q1 202606
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$35M1.4M0.00%Q1 202607
STATE STREET CORP
CIK 0000093751
$34M1.3M0.00%Q1 202608
ROYCE & ASSOCIATES LP
CIK 0000906304
$32M1.2M0.31%Q1 202609
DnB Asset Management AS
CIK 0001456670
$23M902K0.08%Q1 202610
Vanguard Portfolio Management
CIK 0002100121
$22M846K0.00%Q1 202611
GAGNON SECURITIES LLC
CIK 0001125725
$21M840K4.94%Q1 202612
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$20M793K0.00%Q1 202613
MORGAN STANLEY
CIK 0000895421
$17M671K0.00%Q1 202614
Swedbank AB
CIK 0000946431
$16M645K0.02%Q1 202615
Granahan Investment Management, LLC
CIK 0001026710
$16M630K0.78%Q1 202616
First Eagle Investment Management, LLC
CIK 0001325447
$14M555K0.02%Q1 202617
Legal & General Group Plc
CIK 0000764068
$14M549K0.00%Q1 202618
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$13M526K0.01%Q1 202619
ROYAL BANK OF CANADA
CIK 0001000275
$13M504K0.00%Q1 202620
Bandera Partners LLC
CIK 0001399386
$12M476K5.49%Q1 2026
Page 1 of 10
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