# Asset Management One Co., Ltd.

> Asset Management One Co., Ltd. is an SEC-registered investment advisory firm in Tokyo, Japan, registered since 1997, reporting over $5 billion in regulatory assets under management in its Form ADV filing dated June 29, 2026.

- CRD: 110843
- Filed as: ASSET MANAGEMENT ONE CO., LTD.
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: Tokyo, Japan
- Filing period: October 2026
- Form ADV filing dated: June 29, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/110843
- AdvisorCensus page: https://advisorcensus.com/firm/asset-management-one-co-ltd-tokyo-110843

## Quick answers

**How is Asset Management One Co., Ltd. compensated?**
On its Form ADV (Item 5.E, October 2026), Asset Management One Co., Ltd. reports these compensation arrangements: a percentage of assets under its management; fixed fees (other than subscription fees); performance-based fees. The amounts are in Item 5 of its Form ADV Part 2A brochure.

**Where is Asset Management One Co., Ltd. located?**
Asset Management One Co., Ltd.'s principal office is in Tokyo, Japan, according to its Form ADV.

**Is Asset Management One Co., Ltd. registered with the SEC or a state?**
Asset Management One Co., Ltd. is an SEC-registered investment advisory firm, registered since 1997. Status as filed: Approved. CRD 110843.

**How much does Asset Management One Co., Ltd. manage?**
Asset Management One Co., Ltd. reports $470,542,380,723 in regulatory assets under management in its Form ADV filing dated June 29, 2026 (100% discretionary).

**How have Asset Management One Co., Ltd.'s assets and staff changed since 2021?**
In the Form ADV data for Asset Management One Co., Ltd.: Regulatory assets under management: $497,037,028,547 in the October 2021 data and $470,542,380,723 in the October 2026 data, down 5%. Total employees: 903 in October 2021 and 950 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Asset Management One Co., Ltd. serve?**
By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (942); pension and profit sharing plans (but not the plan participants or government pension plans) (321); corporations or other businesses not listed above (59).

**Which custodians does Asset Management One Co., Ltd. use?**
Asset Management One Co., Ltd.'s most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Custody Bank of Japan, Ltd. (affiliated with the firm) and The Master Trust Bank of Japan ,Ltd. as custodians holding 10% or more of its separately managed account assets.

**Does Asset Management One Co., Ltd. report any disciplinary disclosures?**
Reports 2 disclosure items on Form ADV Item 11: yes answers to 11.D(4) (another regulator's order in the past ten years) and 11.H(1)(b) (court finding of a violation). Each question covers the firm and its advisory affiliates, and one event can produce several yes answers. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/110843

**What changed in Asset Management One Co., Ltd.'s recent Form ADV filings?**
In the July 2026 filing data: Employees performing advisory functions went from 282 to 290.

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Fixed fees (other than subscription fees)
- Performance-based fees

### Custodians (Schedule D, Section 5.K(3))
- Custody Bank of Japan, Ltd. (affiliated with the firm)
- The Master Trust Bank of Japan ,Ltd.

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

### Regulatory assets under management (Item 5.F)
- Total: $470,542,380,723
- Discretionary: $470,542,380,723
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Individuals (other than high net worth individuals) | Fewer than 5 | $0 |
| High net worth individuals | Fewer than 5 | $0 |
| Banking or thrift institutions | 17 | $316,941,792 |
| Investment companies | 0 | $0 |
| Business development companies | 0 | $0 |
| Pooled investment vehicles (other than investment companies and business development companies) | 942 | $138,082,146,905 |
| Pension and profit sharing plans (but not the plan participants or government pension plans) | 321 | $56,178,482,054 |
| Charitable organizations | 30 | $1,880,338,888 |
| State or municipal government entities (including government pension plans) | 16 | $249,176,313,534 |
| Other investment advisers | 11 | $2,203,602,299 |
| Insurance companies | 9 | $9,911,929,091 |
| Sovereign wealth funds and foreign official institutions | 1 | $7,761,887,282 |
| Corporations or other businesses not listed above | 59 | $5,030,738,878 |

### Advisory services (Item 5.G)
- Portfolio management for pooled investment vehicles (other than investment companies)
- Portfolio management for businesses (other than small businesses) or institutional clients
- Selection of other advisers (including private fund managers)
- Other

### Firm details
- Registered since: 1997 (28 years)
- Employees: 950 total, 290 performing advisory functions
- Wrap fee program participation: No
- Disclosures (Item 11): Reports 2 disclosure items on Form ADV Item 11.

### Item 11 questions answered yes
- 11.D(4): In the past ten years, has another federal regulator, a state regulator, or a foreign financial regulator entered an order against the firm or an advisory affiliate in connection with investment-related activity?
- 11.H(1)(b): Has a domestic or foreign court ever found that the firm or an advisory affiliate was involved in a violation of investment-related statutes or regulations?

Each question covers the firm and its advisory affiliates: its current employees other than clerical staff, its officers, partners, and directors, and anyone who controls the firm or is controlled by it. One event can produce yes answers to several questions. SEC-registered advisers and exempt reporting advisers may leave out events more than ten years old, and may answer 11.A(2) and 11.B(2) for pending charges only. The detail of each yes answer is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/110843

### Websites listed on Form ADV (Item 1.I)
- am-one.co.jp/english/contact

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $497,037,028,547 | 903 | June 29, 2021 |
| October 2022 | $481,195,755,403 | 885 | August 30, 2022 |
| October 2023 | $460,434,249,062 | 907 | June 29, 2023 |
| October 2024 | $456,316,074,923 | 918 | June 28, 2024 |
| October 2025 | $450,647,441,991 | 927 | June 30, 2025 |
| October 2026 | $470,542,380,723 | 950 | June 29, 2026 |

Regulatory assets under management: $497,037,028,547 in the October 2021 data and $470,542,380,723 in the October 2026 data, down 5%.
Total employees: 903 in October 2021 and 950 in October 2026.

## Changes in the filing (last 12 months)

### July 2026
- Employees performing advisory functions went from 282 to 290.

### May 2026
- Updated its list of owners and control persons (Schedule A).

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Asset Management One Co., Ltd. (CRD 110843): Form ADV filing data as of October 2026.