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IMPAX ASSET MANAGEMENT, LTD.
CRD 143247File 801-67631
APPROVED
Retail clients
Filing as of Dec 22, 2025
Feed vintage Oct 1, 2026
Regulatory AUM
$25.84B
Top 10% of cohort (national)
Discretionary AUM
$24.45B
Non-discretionary $1.39B
Clients
673
686 accounts
Employees
165
Identity & registration
ADV Item 1- Organization form
- Other (specify)
- Firm type
- Registered
- SEC region
- HQ
- Registration date
- Jan 7, 2008
- Principal office
- 7TH FLOOR, 30 PANTON STREET, LONDON, SW1Y 4AJ
- Phone
- 011 44 20 3912 3000
- Website
- HTTPS://WWW.IMPAXAM.COM/
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $25.84B
- Discretionary AUM
- $24.45B
- Non-discretionary AUM
- $1.39B
- Discretionary accounts
- 676
- Non-discretionary accounts
- 10
- Total accounts
- 686
- AUM per client
- $38.4M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Other | 17 | $14.3M |
| Investment companies | 4 | $2.25B |
| Charitable organizations | 7 | $12.8M |
| Other investment advisers | 11 | $1.57B |
| High net worth individuals | 562 | $218.5M |
| Pooled investment vehicles | 27 | $18.02B |
| Pension and profit sharing plans | 9 | $893.8M |
| State or municipal government entities | 3 | $1.47B |
| Individuals (other than high net worth individuals) | 33 | $7.1M |
Compensation & activities
ADV Items 5E, 5GCompensation
- Performance-based fees
- A percentage of assets under your management
Advisory activities
- Portfolio management for businesses
- Portfolio management for investment companies
- Portfolio management for pooled investment vehicles
- Portfolio management for individuals and/or small businesses
Custody
ADV Item 9- Firm Custody Cash
- No
- Firm Custody Assets
- No
- Firm Custody Clients
- No
- Firm Custody Securities
- No
- Related Person Custody Cash
- No
- Related Person Custody Assets
- No
- Related Person Custody Clients
- No
- Related Person Custody Securities
- No
Disclosure events
ADV Item 11This firm answered no to every Item 11 disclosure question in this filing.
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Aug 17, 2026 | Clients | 686 | 673 | decreased by13 |
| Jan 1, 2026 | Employees | 187 | 165 | decreased by22 |
| Jan 1, 2026 | Clients | 953 | 686 | decreased by267 |
| Jan 1, 2026 | AUM | $40,552,725,301 | $25,841,080,997 | decreased by$14,711,644,304 |
| Jan 1, 2026 | Accounts | 953 | 686 | decreased by267 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 133 | 187 | increased by54 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 1,251 | 953 | decreased by298 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $41,126,661,776 | $40,552,725,301 | decreased by$573,936,475 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 1,251 | 953 | decreased by298 |
| Jan 1, 2022 | Employees | 119 | 133 | increased by14 |
| Jan 1, 2022 | Clients | 220 | 1,251 | increased by1,031 |
| Jan 1, 2022 | AUM | $20,030,498,035 | $41,126,661,776 | increased by$21,096,163,741 |
| Jan 1, 2022 | Accounts | 230 | 1,251 | increased by1,021 |
| Apr 1, 2021 | Registration | — | APPROVED |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “IMPAX ASSET” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“IMPAX ASSET” may also match similarly-named firms). Confirm identity against each filing.
Every value above is reproduced from this firm's Form ADV filing. Fields the firm left blank are shown as “Not reported” rather than filled in from other sources.