Institutional ownership · Form 13F
AMRC institutional ownership
Ameresco, Inc.: reported institutional holdings as of 2026-06-30 (filed through 2026-08-31), aggregated by StockEyes from SEC Form 13F information tables. AMRC is one of 2732 tickers in the validated publication set. Mapping coverage in this publication set: 4562 of 6046 universe tickers have at least one validated CUSIP mapping (75.5%). Latest-quarter filed value resolved to any listed ticker: 77.3%; resolved to this universe: 77.2%.
AMRC: change since the prior quarter's filings
The number of reporting managers slipped from 186 in the quarter ended 2026-03-31 to 185 in the quarter ended 2026-06-30 (-1, 0.5%). Total reported shares rose to 35,531,989 (+2,422,939, 7.3%), against the direction of the manager count. Among the 26 managers listed as top holders in both quarters, the largest increases were First Eagle Investment Management, LLC (+942,828 shares) and UBS Group AG (+307,898 shares), among 15 managers who added shares, and the largest decreases were ROYCE & ASSOCIATES LP (-251,725 shares) and Grantham, Mayo, Van Otterloo & Co. LLC (-198,684 shares), among 9 managers who reduced shares. MILLENNIUM MANAGEMENT LLC (1,487,282 shares), MACKENZIE FINANCIAL CORP (371,053 shares) and 2 more entered the listed top holders; Granahan Investment Management, LLC (630,073 shares in the prior quarter), BRIDGEWAY CAPITAL MANAGEMENT, LLC (372,100 shares in the prior quarter) and 2 more dropped out of the listed top holders.
New to 13F data? Read how to read a 13F filing, or see where institutions moved overall in the Smart Money Report.
Reported totals, quarter ended 2026-06-30
185 reporting managers held 35,531,989 shares, reported value $943,349,436 exactly as filed. Values are position values transcribed from the filings, not current market prices.
Reported quarter-over-quarter change (quarter ended 2026-03-31 to quarter ended 2026-06-30): reporting managers -1, reported shares +2,422,939 (+7.32%), reported value +16.56%. These changes compare two filing snapshots.
Shares outstanding cross-check: no current issuer share-count point passed the freshness filter for this ticker, so the gate relied on holder-count and scale checks. See the hub methodology.
AMRC in this quarter's filings
Concentration check: the largest reported position, WELLINGTON MANAGEMENT GROUP LLP with 3,374,767 shares, is 9.5% of all shares reported for AMRC this quarter. The five largest reporting managers together account for 31.7% of the reported total, so the headline total is spread across a broad manager base rather than a few holders.
Reported quarter-over-quarter change: the reporting-manager count fell by 1 versus the quarter ended 2026-03-31, and reported shares moved +7.32% (+2,422,939 shares). That is a comparison of two filing snapshots, not a record of trades on any single day.
Shares-outstanding cross-check: no current issuer share-count point passed the freshness filter for AMRC, so the publication gate relied on holder-count scale, current-CUSIP validation, and quarter consistency for this ticker.
Largest reporting managers, AMRC
| # | Manager | Shares | Value as filed | Share of reported total |
|---|---|---|---|---|
| 1 | WELLINGTON MANAGEMENT GROUP LLP | 3,374,767 | $93,143,570 | 9.5% |
| 2 | BlackRock, Inc. | 2,651,574 | $73,183,430 | 7.5% |
| 3 | Grantham, Mayo, Van Otterloo & Co. LLC | 2,030,950 | $56,054,220 | 5.7% |
| 4 | DIMENSIONAL FUND ADVISORS LP | 1,601,338 | $44,194,239 | 4.5% |
| 5 | STATE STREET CORP | 1,601,127 | $44,191,105 | 4.5% |
| 6 | First Eagle Investment Management, LLC | 1,498,162 | $41,349,272 | 4.2% |
| 7 | MILLENNIUM MANAGEMENT LLC | 1,487,282 | $41,048,983 | 4.2% |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | 1,430,762 | $39,489,031 | 4.0% |
| 9 | D. E. Shaw & Co., Inc. | 1,258,266 | $34,728,141 | 3.5% |
| 10 | DNB Asset Management AS | 1,025,498 | $28,303,745 | 2.9% |
| 11 | ROYCE & ASSOCIATES LP | 998,183 | $27,549,851 | 2.8% |
| 12 | VANGUARD PORTFOLIO MANAGEMENT LLC | 914,162 | $25,230,871 | 2.6% |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 862,848 | $23,818,909 | 2.4% |
| 14 | GAGNON SECURITIES LLC | 826,562 | $22,813,111 | 2.3% |
| 15 | AMERICAN CENTURY COMPANIES INC | 798,121 | $22,028,140 | 2.2% |
Manager names and figures are transcribed from each manager's own Form 13F information table. A manager listing shares in this snapshot does not mean it holds them today.
Reported change, 2026-03-31 to 2026-06-30
| Quarter ended | Filed through | Reporting managers | Reported shares | Value as filed |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-29 | 186 | 33,109,050 | $809,317,853 |
| 2026-06-30 | 2026-08-31 | 185 | 35,531,989 | $943,349,436 |
Every change figure on this page is a reported quarter-over-quarter change between filing snapshots. It is not real-time trading activity.
AMRC reported totals over time
Quarter ended 2026-06-30: 185 reporting managers · 35,531,989 reported shares · $943,349,436 value as filed.
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Quarter-end 13F filed data, long positions only; filings arrive up to 45 days after quarter end.
CUSIPs behind the AMRC total
The validated bridge mapped 1 current CUSIP(s) to AMRC for this quarter: 02361E108. Option pseudo-CUSIPs, units, warrants, and preferred classes are excluded from these common-share totals. Mapping coverage in this publication set: 4562 of 6046 universe tickers have at least one validated CUSIP mapping (75.5%). Latest-quarter filed value resolved to any listed ticker: 77.3%; resolved to this universe: 77.2%.
What this page is and is not
Form 13F reports are quarterly holdings snapshots. Managers file up to about 45 days after quarter-end, so these figures describe reported positions as of the quarter-end date, not holdings today. 13F lists reportable long positions from managers above the SEC reporting threshold and omits short positions entirely.
This page is informational only. It is not investment advice, a recommendation, or a signal to buy or sell. Source: SEC Form 13F bulk data set for filings through 2026-08-31 (period ended 2026-06-30), joined to tickers through StockEyes' validated CUSIP bridge. Methodology and coverage are documented on the institutional ownership hub.
Insider transactions for AMRC (officer and director buys and sells) are covered by InsiderTrace: insidertrace.com/stock/amrc. StockEyes does not duplicate insider transaction tables.
Related StockEyes pages
Latest headlines tagged AMRC are on the market news wire. Upcoming earnings and market dates are on the events calendar. The term itself is defined in the institutional investor glossary entry, and the research workflow behind pages like this one is walked through in how to research a stock and how to compare SEC filings.