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O'Shaughnessy Asset Management, LLC

Stamford, CTSEC-registered investment adviserCRD 144594

Filed as O'SHAUGHNESSY ASSET MANAGEMENT, LLC

O'Shaughnessy Asset Management, LLC is an SEC-registered investment advisory firm in Stamford, CT, registered since 2007, reporting over $5 billion in regulatory assets under management in its Form ADV filing dated December 16, 2025.

19 years
registered since 2007
$19,782,138,121
assets under management
3 arrangements
Percentage of assets, Performance-based and more
None
disclosure items (Item 11)

Quick answers

From the filing

How is O'Shaughnessy Asset Management, LLC compensated?

On its Form ADV (Item 5.E, October 2026), O'Shaughnessy Asset Management, LLC reports these compensation arrangements: a percentage of assets under its management; performance-based fees; other. The amounts are in Item 5 of its Form ADV Part 2A brochure.

Where is O'Shaughnessy Asset Management, LLC located?

O'Shaughnessy Asset Management, LLC's principal office is in Stamford, CT, according to its Form ADV.

Is O'Shaughnessy Asset Management, LLC registered with the SEC or a state?

O'Shaughnessy Asset Management, LLC is an SEC-registered investment advisory firm, registered since 2007. Status as filed: Approved. CRD 144594.

How much does O'Shaughnessy Asset Management, LLC manage?

O'Shaughnessy Asset Management, LLC reports $19,782,138,121 in regulatory assets under management in its Form ADV filing dated December 16, 2025 (100% discretionary).

How have O'Shaughnessy Asset Management, LLC's assets and staff changed since 2021?

In the Form ADV data for O'Shaughnessy Asset Management, LLC: Regulatory assets under management: $4,825,829,604 in the October 2021 data and $19,782,138,121 in the October 2026 data, up 310%. Total employees: 35 in October 2021 and 103 in October 2026. Assets under management move with markets as well as with clients coming and going.

What types of clients does O'Shaughnessy Asset Management, LLC serve?

By number of clients on Form ADV Item 5.D: high net worth individuals (10,734); corporations or other businesses not listed above (344); charitable organizations (40).

Does O'Shaughnessy Asset Management, LLC report any disciplinary disclosures?

Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/144594

What changed in O'Shaughnessy Asset Management, LLC's recent Form ADV filings?

In the January 2026 filing data: Employees performing advisory functions went from 47 to 53. Regulatory assets under management went from $12,599,503,777 to $19,782,138,121 (+57%). Updated its list of owners and control persons (Schedule A).

From the Form ADV filing

Every figure below is as the firm filed it with regulators, as of October 2026.

How the firm is compensated

Item 5.E
  • A percentage of assets under your management
  • Performance-based fees
  • Other

Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ

Fees and minimums

Form ADV Part 2A

The brochure lists different fees for different services or strategies. See the firm's brochure (dated December 16, 2025) for its fees and any account minimum, on the SEC's IAPD site.

Regulatory assets under management

Item 5.F
$19,782,138,121

$19,782,138,121 as of October 2026, filing dated December 16, 2025.

Discretionary: $19,782,138,121.Non-discretionary: $0.

A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means

Who the firm serves

Item 5.D
Individuals (other than high net worth individuals)
Clients Fewer than 5 Assets $0 (0%)
High net worth individuals
Clients 10,734 Assets $16,001,154,356 (81%)
Banking or thrift institutions
Clients Fewer than 5 Assets $0 (0%)
Investment companies
Clients 1 Assets $265,665,597 (1%)
Business development companies
Clients 0 Assets $0 (0%)
Pooled investment vehicles (other than investment companies and business development companies)
Clients 8 Assets $1,146,020,339 (6%)
Pension and profit sharing plans (but not the plan participants or government pension plans)
Clients 18 Assets $69,782,622 (0%)
Charitable organizations
Clients 40 Assets $235,816,479 (1%)
State or municipal government entities (including government pension plans)
Clients 9 Assets $207,089,791 (1%)
Other investment advisers
Clients Fewer than 5 Assets $0 (0%)
Insurance companies
Clients Fewer than 5 Assets $0 (0%)
Sovereign wealth funds and foreign official institutions
Clients 2 Assets $45,752,781 (0%)
Corporations or other businesses not listed above
Clients 344 Assets $1,810,856,156 (9%)

A firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.

Advisory services

Item 5.G
  • Portfolio management for individuals and/or small businesses
  • Portfolio management for investment companies (and business development companies)
  • Portfolio management for pooled investment vehicles (other than investment companies)
  • Portfolio management for businesses (other than small businesses) or institutional clients

Registration and firm details

Items 1, 2, 5
Registration
SEC-registered investment adviser. Status as filed: Approved.
Registered since
2007 (19 years)
Employees
Total: 103. Performing investment advisory functions: 53.
Wrap fee program participation
Yes.
States registered or notice-filed
53 states or jurisdictions
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SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration

Disclosures

Item 11

None Reports no disclosure items on Form ADV Item 11. View on IAPD.

Item 11 asks about criminal, regulatory, and civil events involving the firm and its advisory personnel. The detail of each yes answer is on the IAPD record. Reading a firm's disclosures

Assets and staff over time

Items 5.A, 5.F
$4.83B 2021 $6.89B 2022 $6.3B 2023 $7.98B 2024 $12.6B 2025 $19.8B 2026
Data periodAssets under managementEmployeesFiling dated
October 2026$19,782,138,121103December 16, 2025
October 2025$12,599,503,77781December 17, 2024
October 2024$7,983,580,24969August 5, 2024
October 2023$6,304,455,76360February 28, 2023
October 2022$6,885,813,75043September 30, 2022
October 2021$4,825,829,60435August 23, 2021

Regulatory assets under management: $4,825,829,604 in the October 2021 data and $19,782,138,121 in the October 2026 data, up 310%.

Total employees: 35 in October 2021 and 103 in October 2026.

As filed in each year's data for the same month. Assets under management move with markets as well as with clients coming and going; they measure scale, not skill or returns. Most firms update these figures once a year.

Changes in the filing

Last 12 months
  1. January 2026
    • Employees performing advisory functions went from 47 to 53.
    • Regulatory assets under management went from $12,599,503,777 to $19,782,138,121 (+57%).
    • Updated its list of owners and control persons (Schedule A).

Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.

Websites listed on Form ADV

Item 1.I

Source: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."

Cite this page

AdvisorCensus. O'Shaughnessy Asset Management, LLC (CRD 144594): Form ADV filing data as of October 2026.
https://advisorcensus.com/firm/o-shaughnessy-asset-management-llc-stamford-ct-144594