Ameresco Ownership | Who Owns Ameresco?


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Ameresco Ownership Summary


Ameresco is owned by 63.02% institutional investors, 8.46% insiders, and 28.53% retail investors. Wellington management group llp is the largest institutional shareholder, holding 9.00% of AMRC shares. First Trust RBA Amer Indl RenaisTM ETF is the top mutual fund, with 3.21% of its assets in Ameresco shares.

AMRC Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockAmeresco63.02%8.46%28.53%
SectorIndustrials Stocks 45.61%12.61%41.79%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Wellington management group llp4.74M9.00%$159.02M
Grantham, mayo, van otterloo3.20M6.09%$107.57B
Blackrock funding, inc. /de2.42M4.60%$81.24M
Blackrock2.40M4.59%$69.12M
Vanguard group2.41M4.58%$81.01M
State street1.46M2.78%$49.08M
Dimensional fund advisors lp1.24M2.35%$41.58M
Dnb asset management as1.03M1.97%$34.74M
Royce & associates lp964.01K1.83%$32.37M
Granahan investment management890.07K1.69%$29.89M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Gagnon advisors472.80K9.80%$15.88M
Bandera partners526.77K7.75%$17.69M
Redwood grove capital619.63K5.96%$20.81M
Gagnon securities859.41K5.79%$28.86M
Rock point advisors250.02K2.22%$8.40M
Granahan investment management890.07K1.22%$29.89M
Clean yield group75.23K0.71%$2.53M
Kuhn & co investment counsel21.65K0.58%$727.01K
Pier capital104.38K0.55%$3.51M
Vanguard capital wealth advisors15.00K0.40%$503.70K

Top Buyers

HolderShares% AssetsChange
Wellington management group llp4.74M0.03%2.98M
Royce & associates lp964.01K0.32%640.11K
Granahan investment management890.07K1.22%462.88K
Handelsbanken fonder ab605.33K0.06%289.38K
Bank of america corp /de/318.94K0.00%231.21K

Top Sellers

HolderShares% AssetsChange
First trust advisors lp176.75K0.00%-1.60M
Stephens investment management group---1.07M
Grantham, mayo, van otterloo3.20M0.30%-643.54K
Candriam s.c.a.---418.58K
Centerbook partners lp---318.68K

New Positions

HolderShares% AssetsChangeValue
Driehaus capital management214.70K0.05%214.70K$7.21M
Jane street group177.59K0.00%177.59K$5.96B
Portolan capital management174.90K0.32%174.90K$5.87M
Cooper creek partners management152.93K0.16%152.93K$5.13M
Swedbank ab116.00K0.00%116.00K$3.90M

Sold Out

HolderChange
Mai capital management-1.00
Ifp advisors-1.00
Dinuzzo private wealth-2.00
Sjs investment consulting-4.00
Innealta capital-4.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Sep 30, 202518316.56%33,170,1637.14%631.82%89-3.26%6138.64%
Jun 30, 2025165-7.30%32,593,5855.53%611.79%93-8.82%49-3.92%
Mar 31, 20255-97.28%1,194,190-96.25%20.06%2-97.70%2-96.49%
Dec 31, 2024180-4.26%31,813,835-1.51%601.60%85-3.41%56-12.50%
Sep 30, 2024188-0.53%32,300,198-1.25%611.57%89-11.88%638.62%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
First Trust RBA Amer Indl RenaisTM ETF1.69M3.21%-
Macquarie Small Cap Core I1.49M2.84%-
Delaware Small Cap Core I1.25M2.39%-7.77K
GMO Resources Composite1.08M2.05%-
GMO Resources III1.08M2.05%-
Vanguard US Total Market Shares ETF1.04M1.98%-
Vanguard Total Stock Mkt Idx Inv1.03M1.95%-22.77K
GMO Climate Change III1.00M1.91%-
GMO Climate Change Composite1.00M1.91%-
iShares Russell 2000 ETF782.00K1.48%-

Recent Insider Transactions


DateNameRoleActivityValue
Oct 09, 2025Chiplock Mark EVP, CFO & CAOSell$283.79K
Oct 13, 2025Chiplock Mark EVP, CFO & CAOSell$224.60K
Oct 13, 2025Chiplock Mark EVP, CFO & CAOSell$216.16K
Oct 13, 2025Chiplock Mark EVP, CFO & CAOSell$276.63K
Oct 07, 2025Chiplock Mark EVP, CFO & CAOSell$233.11K

Insider Transactions Trends


DateBuySell
2025 Q4-8
2025 Q3-3
2025 Q2--
2025 Q196
2024 Q43-

AMRC Ownership FAQ


Who owns the most shares of Ameresco?

Ameresco’s largest shareholders are Wellington management group llp (4.74M shares, 9.00%), Grantham, mayo, van otterloo (3.2M shares, 6.09%), and Blackrock funding, inc. /de (2.42M shares, 4.60%). Together, they hold 19.68% of Ameresco’s total shares outstanding.

Does Blackrock own Ameresco?

Yes, BlackRock owns 4.59% of Ameresco, totaling 2.4M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 69.12M$. In the last quarter, BlackRock increased its holdings by 85.64K shares, a 3.70% change.

Who is Ameresco’s biggest shareholder by percentage of total assets invested?

Gagnon advisors is Ameresco’s biggest shareholder by percentage of total assets invested, with 9.80% of its assets in 472.8K Ameresco shares, valued at 15.88M$.

Who is the top mutual fund holder of Ameresco shares?

First Trust RBA Amer Indl RenaisTM ETF is the top mutual fund holder of Ameresco shares, with 3.21% of its total shares outstanding invested in 1.69M Ameresco shares.

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