# 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.

- CRD: 144594
- Filed as: O'SHAUGHNESSY ASSET MANAGEMENT, LLC
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: Stamford, CT
- Filing period: October 2026
- Form ADV filing dated: December 16, 2025
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/144594
- AdvisorCensus page: https://advisorcensus.com/firm/o-shaughnessy-asset-management-llc-stamford-ct-144594

## Quick answers

**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

### Compensation (Item 5.E)
- A percentage of assets under your management
- Performance-based fees
- Other

### Regulatory assets under management (Item 5.F)
- Total: $19,782,138,121
- Discretionary: $19,782,138,121
- 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 | 10,734 | $16,001,154,356 |
| Banking or thrift institutions | Fewer than 5 | $0 |
| Investment companies | 1 | $265,665,597 |
| Business development companies | 0 | $0 |
| Pooled investment vehicles (other than investment companies and business development companies) | 8 | $1,146,020,339 |
| Pension and profit sharing plans (but not the plan participants or government pension plans) | 18 | $69,782,622 |
| Charitable organizations | 40 | $235,816,479 |
| State or municipal government entities (including government pension plans) | 9 | $207,089,791 |
| Other investment advisers | Fewer than 5 | $0 |
| Insurance companies | Fewer than 5 | $0 |
| Sovereign wealth funds and foreign official institutions | 2 | $45,752,781 |
| Corporations or other businesses not listed above | 344 | $1,810,856,156 |

### 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

### Firm details
- Registered since: 2007 (19 years)
- Employees: 103 total, 53 performing advisory functions
- Wrap fee program participation: Yes
- States registered or notice-filed: AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, PR, RI, SC, SD, TN, TX, UT, VA, VI, VT, WA, WI, WV, WY
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Websites listed on Form ADV (Item 1.I)
- [canvas.osam.com](https://canvas.osam.com)
- [osam.com](https://osam.com)
- [osfunds.com](https://osfunds.com)
- [vimeo.com/user110429897 - O'Shaughnessy Asset Management](https://vimeo.com/user110429897 - O'Shaughnessy Asset Management)
- Facebook @OSAMLLC
- Facebook @OSAMRESEARCH
- X @OSAMRESEARCH

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $4,825,829,604 | 35 | August 23, 2021 |
| October 2022 | $6,885,813,750 | 43 | September 30, 2022 |
| October 2023 | $6,304,455,763 | 60 | February 28, 2023 |
| October 2024 | $7,983,580,249 | 69 | August 5, 2024 |
| October 2025 | $12,599,503,777 | 81 | December 17, 2024 |
| October 2026 | $19,782,138,121 | 103 | December 16, 2025 |

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.

## 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).

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. O'Shaughnessy Asset Management, LLC (CRD 144594): Form ADV filing data as of October 2026.