IMPAX ASSET MANAGEMENT GROUP PLC
Q1 2023 Form 13-F

LONDON
CIK 0001749768 · CRD 143247 · SEC-registered investment adviser
Consolidated report · includes 2 managers since Q3 2018
$23.9B Reported Value Total

IMPAX ASSET MANAGEMENT, LTD. reports 1,372 total accounts under management (AUM). There are 1,365 discretionary accounts valued at $31,187,918,278, and 7 non-discretionary accounts valued at $1,024,723,316.

Source: Form ADV filed * Note that certain holdings are exempt from Form 13-F reporting, so the AUM totals may be greater than the Form 13-F total.
SEC Registered Discretionary & Non-Discretionary
Firm Brochure (Part 2A) Client Relationship Summary (Form CRS)
Private funds (Form ADV)
2 funds · $384.1M gross asset value
Private Equity Fund: $384.1M
Source: Form ADV filed 2026-10-26
Reported value
$23.9B
Quarter over quarter
+7.5%
Holdings
391
Top-10 concentration
27.5%

Filing Structure

Reports holdings for

  • Fidante Partners Ltd · Q4 2023 – Q4 2025
  • Desjardins Global Asset Management Inc · File #028-21533 · Q2 2024 – Q2 2025 · declared by one filing
  • Fidante Partners Ltd (not a 13F filer in our records) · Q1 2025 – Q1 2025 · declared by one filing
  • Impax Asset Management (AIFM) Ltd (not a 13F filer in our records) · Q1 2025 – Q1 2025 · declared by one filing
  • IMPAX ASSET MANAGEMENT LLC (not a 13F filer in our records) · Q1 2025 – Q1 2025 · declared by one filing
  • Impax Asset Management LTD (not a 13F filer in our records) · Q1 2025 – Q1 2025 · declared by one filing
  • Impax Asset Management AIFM Ltd · Q3 2018 – Q4 2024
  • Pax Ellevate Management LLC (not a 13F filer in our records) · Q3 2018 – Q3 2020

Key People

Form ADV owners & control persons
John Aquinas Boese
CHIEF COMPLIANCE OFFICER
Karen Cockburn
DIRECTOR, CHIEF FINANCIAL OFFICER
Darren Michael Johnson
GLOBAL CHIEF OPERATING OFFICER
Q4 2022
Q2 2023
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Q1 2023 13F filing summary

Period of report March 31, 2023
Filed May 10, 2023
Form 13F-HR
Reported value $23.9B
Positions 391
Change in reported value +7.1%
New positions 29
Exited positions 19
Position turnover 11.7%
Top-10 concentration 27.5%

13F filings by quarter

Quarter Positions Value
Q3 2026 13F
Filed Nov 10, 2026
 287 $13.0B
Q2 2026 13F
Filed Aug 11, 2026
 284 $15.4B
Q1 2026 13F
Filed May 12, 2026
 287 $14.3B
Q4 2025 13F
Filed Jan 29, 2026
 279 $16.0B
Q3 2025 13F
Filed Nov 6, 2025
 275 $17.1B
Q2 2025 13F
Filed Aug 8, 2025
 280 $17.4B
Q1 2025 13F
Filed Apr 29, 2025
 295 $16.6B
Q4 2024 13F
Filed Feb 4, 2025
 312 $22.1B
Q3 2024 13F
Filed Oct 30, 2024
 313 $25.4B
Q2 2024 13F
Filed Aug 5, 2024
 315 $24.6B
Q1 2024 13F
Filed Apr 30, 2024
 308 $26.1B
Q4 2023 13F
Filed Jan 26, 2024
 366 $24.9B
Q3 2023 13F
Filed Nov 7, 2023
 395 $22.4B
Q2 2023 13F
Filed Aug 7, 2023
 388 $24.9B
Q1 2023 13F
Filed May 10, 2023
 391 $23.9B
Q4 2022 13F
Filed Feb 9, 2023
 381 $22.4B
Q3 2022 13F
Filed Nov 8, 2022
 387 $19.5B
Q2 2022 13F
Filed Aug 2, 2022
 389 $20.5B
Q1 2022 13F
Filed May 16, 2022
 411 $24.2B
Q4 2021 13F
Filed Feb 14, 2022
 419 $27.3B

13 earlier quarters on file — choose one from the quarter menu above.

Top 20 holdings · Q1 2023

# Holding Reported value % of portfolio
1 LIN Linde PLC $1.1B 4.57%
2 MSFT Microsoft Corp $911.3M 3.81%
3 AWK American Water Works Co Inc $831.2M 3.47%
4 PNR Pentair PLC $704.2M 2.94%
5 CTAS Cintas Corp $576.5M 2.41%
6 APTV Aptiv PLC $576.1M 2.41%
7 TRMB Trimble Inc $544.9M 2.28%
8 EQIX Equinix Inc $460.7M 1.92%
9 IEX IDEX Corp $459.8M 1.92%
10 A Agilent Technologies Inc $428.0M 1.79%
11 WM Waste Management Inc $421.1M 1.76%
12 TELXXXX TE Connectivity Ltd $414.7M 1.73%
13 MA Mastercard Inc $399.0M 1.67%
14 URI United Rentals Inc $363.8M 1.52%
15 TMO Thermo Fisher Scientific Inc $357.6M 1.49%
16 BSX Boston Scientific Corp $348.3M 1.46%
17 IQV IQVIA Holdings Inc $344.0M 1.44%
18 AMAT Applied Materials Inc $332.9M 1.39%
19 WTS Watts Water Technologies Inc $329.5M 1.38%
20 RSG Republic Services Inc $329.2M 1.38%

Values as reported on the Q1 2023 Form 13F. Every position is in the holdings table below.

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