Ameresco, Inc.
Ameresco, Inc. (AMRC) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · AMRC · as of Sep 30, 2025
Ownership Breakdown
194
Institutional Holders
▲ 28 vs Q2
$1.13B
Total Inst. Value
▲ $635.01M vs Q2
52.95M
Shares Outstanding
freeFloat 91.43%
33.66M
13F Shares Held
▲ 1.01M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
AMRC largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
WELLINGTON MANAGEMENT GROUP LLP construction - special trade contractors | 4.74M | 9.00% | 9.00% | $159.02B | Nov 14, 2025 | ▲ 2.98M |
GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC construction - special trade contractors | 3.20M | 6.09% | 6.09% | $107.57B | Nov 13, 2025 | ▼ 643.5K |
BLACKROCK, INC. construction - special trade contractors | 2.42M | 4.60% | 4.60% | $81.24B | Nov 12, 2025 | ▼ 19.5K |
VANGUARD GROUP INC construction - special trade contractors | 2.41M | 4.58% | 4.58% | $81.01B | Nov 7, 2025 | ▼ 88.5K |
STATE STREET CORP construction - special trade contractors | 1.46M | 2.78% | 2.78% | $49.08B | Nov 14, 2025 | ▼ 9.3K |
DIMENSIONAL FUND ADVISORS LP construction - special trade contractors | 1.24M | 2.35% | 2.35% | $41.58B | Nov 12, 2025 | ▲ 5.4K |
D. E. SHAW & CO., INC. construction - special trade contractors | 1.15M | 2.19% | 2.19% | $38.76B | Nov 14, 2025 | ▲ 253.2K |
DNB ASSET MANAGEMENT AS construction - special trade contractors | 1.03M | 1.97% | 1.97% | $34.74B | Nov 12, 2025 | ▼ 155.1K |
ROYCE & ASSOCIATES LP construction - special trade contractors | 964.0K | 1.83% | 1.83% | $32.37B | Nov 12, 2025 | ▲ 640.1K |
GRANAHAN INVESTMENT MANAGEMENT, LLC construction - special trade contractors | 890.1K | 1.69% | 1.69% | $29.89B | Nov 14, 2025 | ▲ 462.9K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
18
Increased
+5.23M shares8
New Positions
first time holders20
Decreased
−3.62M shares0
Sold Out
fully exitedNet shares change (top 50)
+1.62M
+5.23M / −3.62M
Net new holders
+6
8 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
AMRC insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
19
Buy transactions
16
Sell transactions
1.19
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
WISNESKI FRANCIS V JR director | May 29, 2026 | Sale | 5,000 | $36.12 | $180.6K | 25.2K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Ameresco, Inc. (AMRC) is primarily owned by institutional investors, who hold approximately 63.6% of total shares outstanding. Company insiders own approximately 8.57%, while retail and public investors account for the remaining 27.86%.
The largest institutional shareholder of Ameresco, Inc. is WELLINGTON MANAGEMENT GROUP LLP, holding approximately 4.74 million shares — equal to 9.00% of outstanding shares — as of September 30, 2025.
A total of 194 institutional investors currently hold AMRC stock, with a combined institutional value of approximately $1.13 billion as of the most recent 13F filing period.
Frequently asked questions
AMRC ownershipAmeresco, Inc. (AMRC) is primarily owned by institutional investors, who hold approximately 63.6% of shares. The largest shareholder is WELLINGTON MANAGEMENT GROUP LLP with a 9.00% stake. Company insiders hold 8.57%. Data sourced from SEC Form 13F as of September 30, 2025.