Data / Investment advisers / Connecticut / O'shaughnessy Asset Management, LLC
O'shaughnessy Asset Management, LLC, Stamford, CT: $19.8 billion AUM, SEC registered investment adviser
Updated November 7, 2026. Source: the SEC's Form ADV data files for investment advisers.
O'shaughnessy Asset Management, LLC is an SEC registered investment adviser with its main office in Stamford, Connecticut and reports $19.8 billion in regulatory assets under management in its Form ADV filed December 16, 2025. Its clients include high net worth individuals, corporations and other businesses and pooled investment vehicles. It is paid through a percentage of assets under management, performance based fees and other fees.
The request: Watch O'shaughnessy Asset Management, LLC (CRD number 144594): each new Form ADV amendment, with AUM, clients and private funds. $10 of work on sign-up, no card.
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- Registration
- SEC registered investment adviser
- CRD number
- 144594
- SEC file number
- 801-68177
- SEC status
- Approved, effective July 25, 2007
- Main office
- 100 First Stamford Place, Stamford, CT 06902
- Phone
- (203) 975-3333
- Website
- canvas.osam.com
- Regulatory AUM
- $19,782,138,121 in the Form ADV filed December 16, 2025
- Discretionary AUM
- $19,782,138,121
- Accounts
- 11,156
- Employees
- 103, of which 53 give investment advice
- Form of organization
- Limited Liability Company
- Paid through
- a percentage of assets under management, performance based fees, other fees
- Form ADV Item 11 disclosures
- None reported
- Latest Form ADV filing
- December 16, 2025
- SEC record
- Investment Adviser Public Disclosure
Clients
Client types the adviser reports in Form ADV item 5.D, with the AUM it attributes to each.
| Client type | Clients | AUM |
|---|---|---|
| High net worth individuals | 10,734 | $16.00 billion |
| Corporations or other businesses | 344 | $1.81 billion |
| Pooled investment vehicles | 8 | $1.15 billion |
| Investment companies | 1 | $265.7 million |
| Charitable organizations | 40 | $235.8 million |
| State or municipal government entities | 9 | $207.1 million |
| Pension and profit sharing plans | 18 | $69.8 million |
| Sovereign wealth funds and foreign official institutions | 2 | $45.8 million |
AUM in the SEC's monthly files
Each change in the AUM the adviser reported across the monthly SEC files held here, with the first file that shows the new value.
| First in the file of | AUM | Form ADV filed |
|---|---|---|
| January 2, 2026 | $19.78 billion | December 16, 2025 |
| December 1, 2025 | $12.60 billion | December 17, 2024 |
Other advisers in Stamford
| Adviser | City | AUM | Private funds | Source |
|---|---|---|---|---|
| Viking Global Investors LP | Stamford | $78.20 billion | 15 | adviserinfo.sec.gov |
| Hudson Bay Capital Management LP | Stamford | $40.71 billion | 11 | adviserinfo.sec.gov |
| Steward Partners Investment Advisory, LLC | Stamford | $36.73 billion | Not listed | adviserinfo.sec.gov |
| Hildene Capital Management | Stamford | $20.18 billion | 74 | adviserinfo.sec.gov |
| New Edge Wealth | Stamford | $19.93 billion | Not listed | adviserinfo.sec.gov |
| Spectrum Asset Management, Inc. | Stamford | $18.30 billion | 1 | adviserinfo.sec.gov |
| Amg Funds LLC | Stamford | $18.25 billion | Not listed | adviserinfo.sec.gov |
| Sustainable Growth Advisers, LP | Stamford | $16.66 billion | Not listed | adviserinfo.sec.gov |
Also on SpecStream
- Investment advisers in Stamford, CT
- Investment advisers in Connecticut
- Advisers with $10 billion to $100 billion in AUM
- Advisers serving high net worth individuals
- Advisers serving corporations and other businesses
- O'shaughnessy Asset Management, LLC on the SEC's adviser search
Public data published by the US Securities and Exchange Commission (US government work). Advisers report these values themselves in Form ADV, and neither the SEC nor the states approve or guarantee them. AUM is regulatory assets under management as the adviser reported it in Form ADV item 5.F, which can differ from the AUM a firm quotes elsewhere. Exempt reporting advisers do not report AUM. Office address, phone and website are the adviser's main office as filed; a firm that files its main office as a private residence shows no street address or phone. An Item 11 disclosure is a reported event, not a finding about the firm today. Details for each firm are on the SEC's Investment Adviser Public Disclosure site. This page uses SEC data and is not endorsed or certified by the SEC. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.