Who owns Ameresco, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of AMRC from SEC Form 13F filings across 184 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 184 institutions disclosed 34.8M shares of Ameresco, Inc. worth $957.2M — about 65.6% of shares outstanding; the largest disclosed holder is WELLINGTON MANAGEMENT GROUP LLP. Source: SEC Form 13F filings, parsed by EvidInvest.
184
13F holders
$957.2M
value, 2026 filers
65.6%
of shares outstanding (34.8M sh)
34
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of AMRC's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | WELLINGTON MANAGEMENT GROUP LLP | 3.4M | $93.1M | 0.0% | 6.4% | -4.7% |
| 2 | BlackRock, Inc. | 2.7M | $73.2M | 0.0% | 5% | +7.9% |
| 3 | Grantham, Mayo, Van Otterloo & Co. LLC | 2.0M | $56.1M | 0.1% | 3.8% | -8.9% |
| 4 | DIMENSIONAL FUND ADVISORS LP | 1.6M | $44.2M | 0.0% | 3% | +11.2% |
| 5 | STATE STREET CORP | 1.6M | $44.2M | 0.0% | 3% | +20.4% |
| 6 | MILLENNIUM MANAGEMENT LLC | 1.5M | $41.0M | 0.0% | 2.8% | +489.4% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLCNEW | 1.4M | $39.5M | 0.0% | 2.7% | new |
| 8 | D. E. Shaw & Co., Inc. | 1.3M | $34.7M | 0.0% | 2.4% | -1.1% |
| 9 | DNB Asset Management AS | 1.0M | $28.3M | 0.1% | 1.9% | +13.7% |
| 10 | ROYCE & ASSOCIATES LP | 998,183 | $27.5M | 0.2% | 1.9% | -20.1% |
| 11 | VANGUARD PORTFOLIO MANAGEMENT LLCNEW | 914,162 | $25.2M | 0.0% | 1.7% | new |
| 12 | GEODE CAPITAL MANAGEMENT, LLC | 862,848 | $23.8M | 0.0% | 1.6% | +8.8% |
| 13 | Handelsbanken Fonder AB | 857,979 | $23.7M | 0.1% | 1.6% | +5.3% |
| 14 | GAGNON SECURITIES LLC | 826,562 | $22.8M | 4.4% | 1.6% | -1.6% |
| 15 | AMERICAN CENTURY COMPANIES INC | 798,121 | $22.0M | 0.0% | 1.5% | +51.7% |
| 16 | Legal & General Group Plc | 796,268 | $22.0M | 0.0% | 1.5% | +45.0% |
| 17 | First Eagle Investment Management, LLC | 749,081 | $20.7M | 0.0% | 1.4% | +34.9% |
| 18 | UBS Group AG | 726,028 | $20.0M | 0.0% | 1.4% | +73.6% |
| 19 | Swedbank AB | 718,000 | $19.8M | 0.0% | 1.4% | +11.3% |
| 20 | MORGAN STANLEY | 648,022 | $17.9M | 0.0% | 1.2% | -3.4% |
| 21 | Redwood Grove Capital, LLC | 543,525 | $15.0M | 3.8% | 1% | +15.8% |
| 22 | Bandera Partners LLC | 476,309 | $12.1M | 4.3% | 0.9% | 0.0% |
| 23 | Gagnon Advisors, LLC | 472,798 | $13.0M | 8.3% | 0.9% | 0.0% |
| 24 | ROYAL BANK OF CANADA | 418,879 | $11.6M | 0.0% | 0.8% | -16.9% |
| 25 | MACKENZIE FINANCIAL CORPNEW | 371,053 | $10.2M | 0.0% | 0.7% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.