Sompo Asset Management Co., Ltd.
- Regulatory AUM
- $25.4B
- Discretionary
- $25.4B
- Clients
- 541
- Avg AUM / client
- $46.9M
- Accounts
- 541
- Employees
- 204
AUM over time
Annual snapshots from Form ADV filings · as of Jun 12, 2026
Asset allocation (SMA assets by investment type)
as of Jun 12, 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 |
|---|---|---|---|
| Banking or thrift institutions | 2 | $14.9M | 0.06% |
| Pooled investment vehicles (non-investment companies) | 295 | $11.8B | 46.4% |
| Pension and profit sharing plans | 220 | $11.3B | 44.3% |
| Other investment advisers | 3 | $302M | 1.19% |
| Insurance companies | 8 | $1.9B | 7.58% |
| Corporations and other businesses | 13 | $103M | 0.4% |
People (11)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Nakao, Goya, Nmn | Managing Executive Officer | Apr 2018 (8y) | Less than 5% | |
| Kojima, Nobuhiro, Nmn | President & Ceo, Director | Apr 2019 (7y) | Less than 5% | |
| Kondo, Toshinobu, Nmn | Director (Part Time) | Apr 2022 (4y) | Less than 5% | |
| Fujimura, Eiji, Nmn | Chief Compliance Officer | Apr 2023 (3y) | Less than 5% | |
| Udo, Tadaaki, Nmn | Director (Outside) | Jun 2023 (3y) | Less than 5% | |
| Akihiko, Kayaoka, Nmn | Executive Officer | Apr 2024 (2y) | Less than 5% | |
| Koichiro, Suzuki, Nmn | Executive Officer | Apr 2024 (2y) | Less than 5% | |
| Oyama, Motokazu, Nmn | Managing Executive Officer | Apr 2024 (2y) | Less than 5% | |
| Sakakibara, Kazuhisa, Nmn | Managing Executive Officer | Apr 2024 (2y) | Less than 5% | |
| Sato, Yoshihisa, Nmn | Managing Executive Officer | Apr 2024 (2y) | Less than 5% | |
| Watanabe, Hiroshi, Nmn | Director, Executive Officer | Apr 2024 (2y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Sompo Holdings, Inc. | Shareholder | Feb 1986 | A | 75% or more |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
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.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 06/12/2026 | 1.2 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
- • Performance-based fees
Services
- • Portfolio management for pooled investment vehicles
- • Portfolio management for businesses/institutional clients
Custody
Reported custodians
- Custody Bank Of Japan, Ltd. $6.6B (26% of AUM) Jun 2026
- Japan Trustee Services Bank, Ltd. $4.9B (18% of AUM) Jun 2020
- State Street $3.8B (15% of AUM) Jun 2026
- Trust And Custody Services Bank Ltd $3.2B (12% of AUM) Jun 2020
- The Master Trust Bank Of Japan, Ltd $1.3B (5% of AUM) Jun 2026
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports it does not have 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: Jun 12, 2026.
View current Form ADV (SEC/IAPD) ↗