Clients
Asset Management One serves 1,406 clients, 942 of them pooled investment vehicles. The average client has about $335 million with the firm.
- Pooled investment vehicles942 clients29%
- Pension and profit-sharing plans321 clients12%
- State or municipal government entities16 clients53%
- Insurance companies9 clients2%
- OtherBanking or thrift institutions, Charitable organizations, Other investment advisers, Sovereign wealth funds and foreign official institutions, Corporations and other businesses4%
Show client breakdownHide client breakdown
| Client type | Clients | Regulatory AUM | Share | Avg. per client |
|---|---|---|---|---|
| Banking or thrift institutions | 17 | $316,941,792 | 0.1% | $18.6M |
| Pooled investment vehicles | 942 | $138,082,146,905 | 29.3% | $146.6M |
| Pension and profit-sharing plans | 321 | $56,178,482,054 | 11.9% | $175.0M |
| Charitable organizations | 30 | $1,880,338,888 | 0.4% | $62.7M |
| State or municipal government entities | 16 | $249,176,313,534 | 53.0% | $15.57B |
| Other investment advisers | 11 | $2,203,602,299 | 0.5% | $200.3M |
| Insurance companies | 9 | $9,911,929,091 | 2.1% | $1.10B |
| Sovereign wealth funds and foreign official institutions | 1 | $7,761,887,282 | 1.6% | $7.76B |
| Corporations and other businesses | 59 | $5,030,738,878 | 1.1% | $85.3M |
| Total | 1,406 | $470,542,380,723 | 100% | $334.7M |
- Clients
- 17
- Regulatory AUM
- $316,941,792
- Share
- 0.1%
- Avg. per client
- $18.6M
- Clients
- 942
- Regulatory AUM
- $138,082,146,905
- Share
- 29.3%
- Avg. per client
- $146.6M
- Clients
- 321
- Regulatory AUM
- $56,178,482,054
- Share
- 11.9%
- Avg. per client
- $175.0M
- Clients
- 30
- Regulatory AUM
- $1,880,338,888
- Share
- 0.4%
- Avg. per client
- $62.7M
- Clients
- 16
- Regulatory AUM
- $249,176,313,534
- Share
- 53.0%
- Avg. per client
- $15.57B
- Clients
- 11
- Regulatory AUM
- $2,203,602,299
- Share
- 0.5%
- Avg. per client
- $200.3M
- Clients
- 9
- Regulatory AUM
- $9,911,929,091
- Share
- 2.1%
- Avg. per client
- $1.10B
- Clients
- 1
- Regulatory AUM
- $7,761,887,282
- Share
- 1.6%
- Avg. per client
- $7.76B
- Clients
- 59
- Regulatory AUM
- $5,030,738,878
- Share
- 1.1%
- Avg. per client
- $85.3M
Total
- Clients
- 1,406
- Regulatory AUM
- $470,542,380,723
- Share
- 100%
- Avg. per client
- $334.7M
What it does
Asset Management One provides portfolio management for pooled vehicles, portfolio management for institutions, selecting other managers and other activities. It is paid through a percentage of assets, fixed fees and performance-based fees.
Asset Management One advises no private funds.
100.0% of assets ($470.54B across 1,741 accounts) are managed with discretion. 99% of clients are outside the U.S., and 10 clients received advice without assets under management last fiscal year.
What the accounts hold
- Stocks48%
- Funds6%
- Pooled vehicles5%
- Registered funds1%
- Bonds44%
- Sovereign bonds32%
- U.S. government and agency bonds8%
- Investment grade corporate bonds4%
- Cash1%
Filed values cover 99%. The neutral 1% gap has no reported category.
Custodians
Asset Management One’s client accounts are held mainly at The Master Trust Bank of Japan ,LTD., with 43% of managed assets, and Custody Bank of Japan, with 25%. Asset Management One has custody of client assets.
- Custody Bank of JapanCustody Bank of Japan, LTD. · Tokyo · $116.99B25%
- The Master Trust Bank of Japan ,LTD.The Master Trust Bank of Japan ,LTD. · Tokyo · $201.59B43%
- All other custodians$151.96B32%
Ownership and leadership
Mizuho Financial Group, Inc. owns 50% to 75% of Asset Management One, and Noriyuki Sugihara is its CEO.
- Owns 50% to 75% of Asset Management One Co., LTD.
Mizuho Financial Group, Inc.
Control person · since March 2003
- Owns 25% to 50% of Asset Management One Co., LTD.
Daiichi Life Group, Inc
Control person · since October 1999
Leadership
- Noriyuki SugiharaDirector, President & Chief Executive Officer
- Yuichiro AbeChief Financial Officer, Director, Managing Executive Officer, Head of Planning Division
- Kohei HorikawaChief Compliance Officer, Chief Legal Officer, Director, Managing Executive Officer, Head of Risk Management Division
- Masako ItoManaging Executive Officer, Deputy-Head of Planning Division
- Koya IwabuchiExecutive Officer, Deputy Head of Institutional Fiduciary Management Division
- Takeshi MikiManaging Executive Officer, Head of Institutional Fiduciary Management Division
- Shigeki MuramatsuManaging Executive Officer, Head of Investments Division
- Nobuyuki NagahamaChief Operations Officer, Executive Officer, Head of DX & Process Innovation Division
- Hirofumi NoguchiManaging Executive Officer, Head of Retail & Wealth Solutions Division
- Takao OnoExecutive Officer, Deputy Head of Risk Management Division
- Yusuke SasakiDirector, Managing Executive Officer, Head of Strategic Fund Investment Division, Head of Product Division
- Hiromichi ShimadaExecutive Officer, Deputy Head of Strategic Fund Investments Division
- Toshinao SuzukiExecutive Officer, Deputy Head of DX & Process Innovation Division
- Tetsuji TodaDirector, Member of Audit and Supervisory Committee
- Toshihiro TsumikiExecutive Officer, Deputy Head of Product Division
- Akito YanagiharaDirector, Member of Audit and Supervisory Committee
Staff
- 950 employees
- 290 in advisory functions
Reported holdings
Asset Management One’s reported 13F holdings total $38.97B across 957 positions, and the ten largest make up 32.7% of it.
- $38.97B
- Reported 13F value
- 957
- Positions
- 32.7%
- In the 10 largest
- +14.9%
- Value vs. prior quarter
- iShares TR · Core S&P500 ETF6.3%
- Nvidia Corporation5.5%
- Apple Inc.5.0%
- Microsoft Corp.3.3%
- Amazon Com Inc.2.9%
- Alphabet Inc. · Cap Stk CL A2.6%
- Broadcom Inc.2.1%
- Alphabet Inc. · Cap Stk CL C2.0%
- Micron Technology Inc.1.6%
- Meta Platforms Inc. · CL A1.6%
Together, the ten largest are 32.7% of reported value.
A 13F covers only exchange-traded long positions the firm holds with discretion, so this $38.97B is not its $470.54B in regulatory assets and does not represent any individual client's portfolio.
Fees
Asset Management One is paid through a percentage of assets under management, fixed fees (other than subscription fees) and performance-based fees.
Asset Management One’s fee rates are not included in this profile. Find its brochure on the SEC’s site.
Offices and registrations
Besides its headquarters, Asset Management One has 0 offices, with 1 listed address with no US state reported.
Registration details
- Legal name
- Asset Management One Co., LTD.
- Headquarters
- Tekko Building, 8-2, Marunouchi 1 Chome, Chiyoda-Ku, Tokyo, Japan 100-0005
- Phone
- 81367745000
- Website
- Not reported
- SEC file
- 801-55047
- Structure
- corporation organized in Japan
- Fiscal year end
- March
This directory does not report disciplinary history, for any firm or individual, in either direction. The SEC publishes the complete record, including any disciplinary events, and it is the authoritative place to check one. See this firm's record on adviserinfo.sec.gov
Common questions
How many clients does Asset Management One have?
Asset Management One has 1,406 clients and manages $470.5 billion for them, as of June 2026. They include 942 pooled investment vehicles, 321 pension and profit-sharing plans and 59 corporations and other businesses.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 29 June 2026
What services does Asset Management One offer?
Asset Management One provides portfolio management for pooled vehicles, portfolio management for institutions, selecting other managers and other activities.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
Which custodians does Asset Management One use?
Asset Management One’s separately managed account assets are held at The Master Trust Bank of Japan ,LTD. (Tokyo), with $201,588,758,459 and Custody Bank of Japan, LTD. (Tokyo), with $116,989,418,931. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 29 June 2026
How many financial advisors does Asset Management One have?
Asset Management One has 0 investment adviser representatives registered with state securities authorities, out of 950 employees, and 290 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
What does Asset Management One invest in?
At the end of its last fiscal year, Asset Management One’s separately managed accounts held 48% exchange-traded equities, 32% sovereign bonds, 8% U.S. government and agency bonds, 5% pooled vehicles (private funds and similar), 4% investment grade corporate bonds, 1% registered funds (mutual funds, ETFs, BDCs) and 1% cash and equivalents. It advises no private funds of its own.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Asset Management One?
Asset Management One’s direct owners are Daiichi Life Group, Inc (25% to 50%) and Mizuho Financial Group, Inc. (50% to 75%).
Source: Form ADV Part 1A, Schedules A and B, filed 29 June 2026
How does Asset Management One get paid?
Asset Management One is paid through a percentage of assets under management, fixed fees and performance-based fees. Its Form ADV lists no commissions among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file