Ameresco, Inc.
DE ˙ DB ˙ US02361E1082
28,10 € ↓ -2,80 (-9,06%)
2026-06-04
DEL PRIS
SecurityDE:4AM / Ameresco, Inc.
InstitutionBaird Financial Group, Inc.
Latest Disclosed Ownership150,521 shares
Latest Disclosed Value $ 3,838,286
Baird Financial Group, Inc. ownership in 4AM / Ameresco, Inc.

On May 14, 2026 - Baird Financial Group, Inc. filed a 13F-HR form disclosing ownership of 150,521 shares of Ameresco, Inc. (DE:4AM) valued at $3,320,493 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 15, 2025 disclosing 0 shares of Ameresco, Inc.. The current value of the position is $4,229,640 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F AMERESCO CL A 02361E108 150,521 150,521 3,838 0.0032
2025-05-15 2025-03-31 13F AMERESCO INC CL A COMMON 02361E108 0 -55,911 -100.00 0 -100.00
2025-02-14 2024-12-31 13F AMERESCO INC CL A COMMON 02361E108 55,911 -2,629 -4.49 1,313 -40.93 0.0025
2024-11-14 2024-09-30 13F AMERESCO INC CL A COMMON 02361E108 58,540 275 0.47 2,221 32.36 0.0043
2024-08-14 2024-06-30 13F AMERESCO INC CL A COMMON 02361E108 58,265 -473 -0.81 1,679 18.42 0.0035
2024-05-14 2024-03-31 13F AMERESCO INC CL A COMMON 02361E108 58,738 -997 -1.67 1,417 -25.07 0.0030
2024-02-14 2023-12-31 13F AMERESCO INC CL A COMMON 02361E108 59,735 -30,259 -33.62 1,892 -45.50 0.0043
2023-11-13 2023-09-30 13F AMERESCO INC CL A COMMON 02361E108 89,994 -5,728 -5.98 3,470 -25.44 0.0095
2023-08-11 2023-06-30 13F AMERESCO INC CL A COMMON 02361E108 95,722 -5,112 -5.07 4,655 -6.23 0.0123
2023-05-15 2023-03-31 13F AMERESCO INC CL A COMMON 02361E108 100,834 -6,490 -6.05 4,963 82,616.67 0.0122
2023-02-13 2022-12-31 13F AMERESCO INC CL A COMMON 02361E108 107,324 -139 -0.13 6 -99.92 0.0161
2022-11-15 2022-09-30 13F AMERESCO INC CL A COMMON 02361E108 107,463 -112,376 -51.12 7,144 -28.67 0.0210
2022-08-08 2022-06-30 13F AMERESCO INC CL A COMMON 02361E108 219,839 116,281 112.29 10,016 21.66 0.0278
2022-05-13 2022-03-31 13F AMERESCO INC CL A COMMON 02361E108 103,558 17,086 19.76 8,233 16.91 0.0203
2022-02-09 2021-12-31 13F AMERESCO INC CL A COMMON 02361E108 86,472 951 1.11 7,042 40.92 0.0165
2021-11-12 2021-09-30 13F AMERESCO INC CL A COMMON 02361E108 85,521 427 0.50 4,997 -6.37 0.0128
2021-08-11 2021-06-30 13F AMERESCO INC CL A COMMON 02361E108 85,094 2,258 2.73 5,337 32.50 0.0139
2021-05-13 2021-03-31 13F AMERESCO INC CL A COMMON 02361E108 82,836 3,687 4.66 4,028 -2.59 0.0113
2021-02-11 2020-12-31 13F AMERESCO INC CL A COMMON 02361E108 79,149 -1,277 -1.59 4,135 53.95 0.0124
2020-11-12 2020-09-30 13F AMERESCO INC CL A COMMON 02361E108 80,426 -21,911 -21.41 2,686 -5.52 0.0092
2020-10-22 2020-06-30 13F/A-1 AMERESCO INC CL A COMMON 02361E108 102,337 -10,962 -9.68 2,843 47.38 0.0107
2020-08-14 2020-06-30 13F AMERESCO INC CL A COMMON 02361E108 113,919 620 1,994 3,951.6550
2020-05-14 2020-03-31 13F AMERESCO INC CL A COMMON 02361E108 113,299 -2,171 -1.88 1,929 -4.55 0.0088
2020-02-14 2019-12-31 13F AMERESCO INC CL A COMMON 02361E108 115,470 6,730 6.19 2,021 15.68 0.0073
2019-11-14 2019-09-30 13F AMERESCO INC CL A COMMON 02361E108 108,740 19,297 21.57 1,747 32.65 0.0069
2019-08-14 2019-06-30 13F AMERESCO INC CL A COMMON 02361E108 89,443 17,568 24.44 1,317 13.24 0.0051
2019-05-14 2019-03-31 13F AMERESCO INC CL A COMMON 02361E108 71,875 19,547 37.35 1,163 57.59 0.0068
2019-02-14 2018-12-31 13F AMERESCO INC CL A COMMON 02361E108 52,328 52,328 738 0.0050
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.