← Directory
NEWMARKET INVESTMENT MANAGEMENT, LP
CRD 308098File 801-118684
APPROVED
Custody
Filing as of May 20, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$2.82B
Top 25% of cohort (national)
Discretionary AUM
$2.82B
Clients
28
28 accounts
Employees
30
Top 25% of cohort in PA
Identity & registration
ADV Item 1- Organization form
- Limited Partnership
- Firm type
- Registered
- SEC region
- PLRO
- Registration date
- May 8, 2020
- Principal office
- 1325 NORTH BEACH STREET, SUITE 201, PHILADELPHIA, PA, 19125
- Phone
- 215-701-9690
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $2.82B
- Discretionary AUM
- $2.82B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 28
- Non-discretionary accounts
- 0
- Total accounts
- 28
- AUM per client
- $100.7M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Pooled investment vehicles | 28 | $2.82B |
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
- Yes
- Firm Custody Clients
- Yes
- Firm Custody Securities
- No
- Related Person Custody Cash
- No
- Related Person Custody Assets
- No
- Related Person Custody Clients
- No
- Related Person Custody Securities
- Yes
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 | AUM | $2,817,715,763 | $2,820,324,742 | increased by$2,608,979 |
| Apr 1, 2026 | Employees | 29 | 30 | increased by1 |
| Apr 1, 2026 | Clients | 26 | 28 | increased by2 |
| Apr 1, 2026 | AUM | $2,670,238,988 | $2,817,715,763 | increased by$147,476,775 |
| Apr 1, 2026 | Accounts | 26 | 28 | increased by2 |
| Dec 1, 2025 vs May 1, 2025 | AUM | $2,673,419,460 | $2,670,238,988 | decreased by$3,180,472 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 16 | 29 | increased by13 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 9 | 26 | increased by17 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $1,571,339,611 | $2,673,419,460 | increased by$1,102,079,849 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 9 | 26 | increased by17 |
| Apr 1, 2022 | Clients | 6 | 9 | increased by3 |
| Apr 1, 2022 | AUM | $1,036,662,817 | $1,571,339,611 | increased by$534,676,794 |
| Apr 1, 2022 | Accounts | 6 | 9 | increased by3 |
| 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 “NEWMARKET INVESTMENT” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“NEWMARKET INVESTMENT” 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.