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AMRC · Ameresco, Inc.

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$23.15 +0.38 (+1.67%) At close · Sep 4
Market Cap
$1.23B
Shares
53.07M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 188
Total Value: $977,222,447
Total Shares: 35,406,614
Showing 1–100 of 193 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 188 13F filers · Δ vs Mar 31, 2026
Top Holder
9.5%
Sep 2023 → Jun 2026 · range 9.5% – 13.9%
−1.1 pts
Top 5
31.8%
Sep 2023 → Jun 2026 · range 31.8% – 41.9%
−1.3 pts
Top 10
49.3%
Sep 2023 → Jun 2026 · range 49.3% – 57.4%
−0.6 pts
HHI
353
Sep 2023 → Jun 2026 · range 353 – 503
Broadly held−13

Quarterly Activity

vs Mar 31, 2026
New
30
Increased
74
Decreased
57
Sold Out
29
Unchanged
27
Holder count: +1
Institutional value: +15.0%
Shares held: +6.2%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 193
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1488139 CUSIP 02361E108 13F (30d) 137 filings 127 filers Visit website Investor relations