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PORTMAN SQUARE CAPITAL LLP
CRD 319011File 801-126696
APPROVED
Filing as of May 14, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$4.58B
Top 25% of cohort (national)
Discretionary AUM
$4.58B
Clients
4
4 accounts
Employees
27
Identity & registration
ADV Item 1- Organization form
- Limited Liability Partnership
- Firm type
- Registered
- SEC region
- HQ
- Registration date
- Oct 6, 2022
- Principal office
- 10 PORTMAN SQUARE, LONDON, W1H 6AZ
- Phone
- 44 203 627 6800
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $4.58B
- Discretionary AUM
- $4.58B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 4
- Non-discretionary accounts
- 0
- Total accounts
- 4
- AUM per client
- $1.15B
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Pooled investment vehicles | 4 | $4.58B |
Compensation & activities
ADV Items 5E, 5GCompensation
- Performance-based fees
- A percentage of assets under your management
Advisory activities
- Portfolio management for pooled investment vehicles
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 |
|---|---|---|---|---|
| Jun 1, 2026 | Employees | 28 | 27 | decreased by1 |
| Jun 1, 2026 | Clients | 7 | 4 | decreased by3 |
| Jun 1, 2026 | AUM | $3,361,686,579 | $4,581,447,405 | increased by$1,219,760,826 |
| Jun 1, 2026 | Accounts | 6 | 4 | decreased by2 |
| Dec 1, 2025 vs May 1, 2025 | Employees | 34 | 28 | decreased by6 |
| Dec 1, 2025 vs May 1, 2025 | AUM | $4,153,366,509 | $3,361,686,579 | decreased by$791,679,930 |
| Dec 1, 2025 vs May 1, 2025 | Accounts | 7 | 6 | decreased by1 |
| May 1, 2025 | Registration | — | APPROVED |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “PORTMAN SQUARE” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“PORTMAN SQUARE” 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.