AdvisorCensus / Financial advisors / Connecticut / Bridgeport / O'Shaughnessy Asset Management, LLC
O'Shaughnessy Asset Management, LLC
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.
Quick answers
From the filingHow 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 2AThe 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 as of October 2026, filing dated December 16, 2025.
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.DA 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
SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration
Disclosures
Item 11None 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| Data period | Assets under management | Employees | Filing dated |
|---|---|---|---|
| October 2026 | $19,782,138,121 | 103 | December 16, 2025 |
| October 2025 | $12,599,503,777 | 81 | December 17, 2024 |
| October 2024 | $7,983,580,249 | 69 | August 5, 2024 |
| October 2023 | $6,304,455,763 | 60 | February 28, 2023 |
| October 2022 | $6,885,813,750 | 43 | September 30, 2022 |
| October 2021 | $4,825,829,604 | 35 | August 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- 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.ISource: 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