Russell Investments Implementation Services, Llc
- Regulatory AUM
- $81.1B
- Discretionary
- $81.1B
- Clients
- 118
- Avg AUM / client
- $687M
- Accounts
- 146
- Employees
- 569
AUM over time
Annual snapshots from Form ADV filings · as of Mar 31, 2026
Asset allocation (SMA assets by investment type)
as of Mar 31, 2026Share of SMA assets by investment vehicle type, as filed in Form ADV Item 5.K. Dollar figures are percentages applied to total regulatory AUM.
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Pooled investment vehicles (non-investment companies) | 38 | $231M | 0.29% |
| Pension and profit sharing plans | 30 | $18.8B | 23.2% |
| Charitable organizations | 14 | $9.6B | 11.8% |
| State or municipal government entities | 24 | $52.1B | 64.2% |
| Other investment advisers | 10 | $232M | 0.29% |
| Insurance companies | 2 | $203M | 0.25% |
Retirement plan clients
Plans that reported this firm as an investment service provider on Form 5500 Schedule C.
| Plan | Location | Plan year |
|---|---|---|
| British Airways Plc Pension Plan (U.S.A.) British Airways Plc | 2024 | |
| Jpmorgan Chase Retirement Plan Jpmorgan Chase Bank, National Association | 2024 | |
| The Southern Company Pension Plan Southern Company Services, Inc. | 2024 | |
| The Southern California Edison Company Retirement Plan Southern California Edison Company | Rosemead, CA | 2024 |
People (10)
roster as of Jul 20, 2026| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| El Hillow, Katherine Anne | Director; President; Chief Investment Officer | May 2020 (6y) | Less than 5% | |
| Siegel, David Andrew | Financial And Operations Principal | Mar 2022 (4y) | Less than 5% | |
| Surloff, Howard Brian | Chief Legal Officer | Mar 2022 (4y) | Less than 5% | |
| Mortensen, Peter | Chief Risk Officer | Jun 2023 (3y) | Less than 5% | |
| Alvarez, Carlos Cid | Us Broker Dealer Chief Compliance Officer | Nov 2023 (3y) | Less than 5% | |
| Ostrovsky, Aaron Alexander | Director | Dec 2023 (3y) | Less than 5% | |
| Curran, Amy Elizabeth | Us Adviser Chief Compliance Officer | Mar 2024 (2y) | Less than 5% | |
| Lenzo, Jason Abram | Director | Jul 2024 (2y) | Less than 5% | |
| Rush Kirk Evans | Registered representative | Dec 2024 (2y) | ||
| Tim William Bond | Registered representative | Mar 2025 (1y) |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Russell Investments Us Institutional Holdco, Inc. | Owner | Jun 2016 | A | 75% or more |
| Emerald Acquisition Limited | Owner | Jun 2016 | B | ≈ 56.25% – 100% via Russell Investments Us Institutional Holdco, Inc. |
| Russell Investments Group, Ltd. | Owner | Sep 2016 | B | 75% or more of Russell Investments Cayman Midco, Ltd (indirect) |
| Russell Investments Cayman Midco, Limited | Owner | Jun 2016 | B | ≈ 42.19% – 100% via Emerald Acquisition Limited |
| Ta Xii A Eu Aiv, L.P. | Shareholder | Sep 2016 | B | 25% – 50% of Russell Investments Group, Ltd. (indirect) |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Emerald Acquisition Limited: 75% – 100% of Russell Investments Us Institutional Holdco, Inc. × 75% – 100% direct ≈ 56.25% – 100% of the firm
- Russell Investments Cayman Midco, Limited: 75% – 100% of Emerald Acquisition Limited × 75% – 100% of Russell Investments Us Institutional Holdco, Inc. × 75% – 100% direct ≈ 42.19% – 100% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Retirement plans served (4)
| Plan | Sponsor | Participants | Plan assets | As of |
|---|---|---|---|---|
| British Airways Plc Pension Plan (U.S.A.) | British Airways Plc | 206 | $315M | 04/01/2024 |
| Jpmorgan Chase Retirement Plan | Jpmorgan Chase Bank, National Association | 78,270 | $16.1B | 01/01/2024 |
| The Southern Company Pension Plan | Southern Company Services, Inc. | 26,369 | $15.3B | 01/01/2024 |
| The Southern California Edison Company Retirement Plan | Southern California Edison Company | 8,726 | $4.7B | 01/01/2024 |
From Form 5500 service-provider disclosures.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/31/2026 | 2.76 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Fixed fees
- • Commissions
- • Performance-based fees
- • Other fees
- • % OF REVENUE/INTRACOMPANY AGRMTS
Services
- • Portfolio management for pooled investment vehicles
- • Portfolio management for businesses/institutional clients
- • Other services
Custody
Reported custodians
- BNY Mellon $26.5B (33% of AUM) Mar 2026
- Northern Trust $22.3B (27% of AUM) Mar 2026
- State Street $21.0B (26% of AUM) Mar 2026
- Caisse Des Depots Et Consignations $11.0B (9% of AUM) May 2020
- J.P. Morgan $7.9B (10% of AUM) Mar 2026
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports having custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Mar 31, 2026.
View current Form ADV (SEC/IAPD) ↗