Ameresco, Inc.
DE ˙ DB ˙ US02361E1082
28,10 € ↓ -2,80 (-9,06%)
2026-06-04
DEL PRIS
SecurityDE:4AM / Ameresco, Inc.
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership252,340 shares
Latest Disclosed Value $ 6,434,670
Millennium Management Llc reports 85.42% increase in ownership of 4AM / Ameresco, Inc.

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 252,340 shares of Ameresco, Inc. (DE:4AM) valued at $5,566,620 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 136,089 shares of Ameresco, Inc.. This represents a change in shares of 85.42% during the quarter. The current value of the position is $7,090,754 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F AMERESCO CL A 02361E108 252,340 116,251 85.42 6,435 61.41 0.0027
2026-02-17 2025-12-31 13F AMERESCO CL A 02361E108 136,089 84,542 164.01 3,986 130.40 0.0017
2025-11-14 2025-09-30 13F AMERESCO CL A 02361E108 51,547 51,547 1,731 0.0007
2025-08-14 2025-06-30 13F AMERESCO CL A 02361E108 0 -185,524 -100.00 0 -100.00
2025-05-15 2025-03-31 13F AMERESCO CL A 02361E108 185,524 470 0.25 2,241 -48.42 0.0012
2025-02-14 2024-12-31 13F AMERESCO CL A 02361E108 185,054 -203,179 -52.33 4,345 -70.50 0.0021
2024-11-14 2024-09-30 13F AMERESCO CL A 02361E108 388,233 197,852 103.92 14,730 168.58 0.0070
2024-08-14 2024-06-30 13F AMERESCO CL A 02361E108 190,381 -80,333 -29.67 5,485 -16.04 0.0025
2024-05-15 2024-03-31 13F AMERESCO CL A 02361E108 270,714 270,714 6,532 0.0028
2024-02-14 2023-12-31 13F AMERESCO CL A 02361E108 0 -89,142 -100.00 0 -100.00
2023-11-14 2023-09-30 13F AMERESCO CL A 02361E108 89,142 -148,331 -62.46 3,437 -70.24 0.0017
2023-08-14 2023-06-30 13F AMERESCO CL A 02361E108 237,473 208,427 717.58 11,548 707.55 0.0057
2023-05-15 2023-03-31 13F AMERESCO CL A 02361E108 29,046 29,046 1,430 0.0008
2023-02-14 2022-12-31 13F AMERESCO CL A 02361E108 0 -269,868 -100.00 0 -100.00
2022-11-14 2022-09-30 13F AMERESCO CL A 02361E108 269,868 -189,167 -41.21 17,941 -14.22 0.0106
2022-08-15 2022-06-30 13F AMERESCO CL A 02361E108 459,035 459,035 20,914 0.0130
2022-05-16 2022-03-31 13F AMERESCO CL A 02361E108 0 -81,099 -100.00 0 -100.00
2022-02-14 2021-12-31 13F AMERESCO CL A 02361E108 81,099 81,099 6,605 0.0034
2021-11-15 2021-09-30 13F AMERESCO CL A 02361E108 0 -4,413 -100.00 0 -100.00
2021-08-16 2021-06-30 13F AMERESCO CL A 02361E108 4,413 -79,166 -94.72 277 -93.18 0.0002
2021-05-17 2021-03-31 13F AMERESCO CL A 02361E108 83,579 83,579 4,064 0.0029
2019-08-15 2019-06-30 13F/A-1 AMERESCO CL A 02361E108 0 -34,484 -100.00 0 -100.00
2019-05-14 2019-03-31 13F AMERESCO CL A 02361E108 34,484 34,484 558 0.0008
2019-02-15 2018-12-31 13F/A-1 AMERESCO CL A 02361E108 0 -15,902 -100.00 0 -100.00
2018-11-14 2018-09-30 13F AMERESCO CL A 02361E108 15,902 15,902 217 0.0003
2018-08-14 2018-06-30 13F AMERESCO CL A 02361E108 0 -35,010 -100.00 0 -100.00
2018-05-15 2018-03-31 13F AMERESCO CL A 02361E108 35,010 -29,561 -45.78 455 -18.02 0.0006
2018-02-14 2017-12-31 13F AMERESCO CL A 02361E108 64,571 -27,809 -30.10 555 -23.02 0.0008
2017-11-14 2017-09-30 13F AMERESCO CL A 02361E108 92,380 4,632 5.28 721 6.66 0.0011
2017-08-14 2017-06-30 13F AMERESCO CL A 02361E108 87,748 -9,181 -9.47 676 6.46 0.0012
2017-05-15 2017-03-31 13F AMERESCO CL A 02361E108 96,929 39,633 69.17 635 101.59 0.0012
2017-02-14 2016-12-31 13F AMERESCO CL A 02361E108 57,296 38,998 213.13 315 228.13 0.0007
2016-11-14 2016-09-30 13F AMERESCO CL A 02361E108 18,298 -36,696 -66.73 96 -60.00 0.0002
2016-08-15 2016-06-30 13F AMERESCO CL A 02361E108 54,994 54,994 0.00 240 0.0005
2016-05-16 2016-03-31 13F AMERESCO CL A 02361E108 0 -24,896 -100.00 0 -100.00
2016-02-16 2015-12-31 13F AMERESCO CL A 02361E108 24,896 -3,404 -12.03 156 -6.02 0.0003
2015-11-16 2015-09-30 13F AMERESCO CL A 02361E108 28,300 28,300 0.00 166 0.0003
2015-05-15 2015-03-31 13F AMERESCO CL A 02361E108 0 -15,368 -100.00 0 -100.00
2015-02-17 2014-12-31 13F AMERESCO CL A 02361E108 15,368 976 6.78 108 9.09 0.0002
2014-11-14 2014-09-30 13F AMERESCO CL A 02361E108 14,392 -24,872 -63.35 99 -64.13 0.0003
2014-08-14 2014-06-30 13F AMERESCO CL A 02361E108 39,264 39,264 276 0.0008
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.