Data / Investment advisers / Massachusetts / Winthrop Square Capital, L.P.
Winthrop Square Capital, L.P., Boston, MA: $167 million AUM, SEC registered investment adviser
Updated November 7, 2026. Source: the SEC's Form ADV data files for investment advisers.
Winthrop Square Capital, L.P. is an SEC registered investment adviser with its main office in Boston, Massachusetts and reports $167 million in regulatory assets under management in its Form ADV filed February 24, 2026. Its clients include pooled investment vehicles. It is paid through a percentage of assets under management and performance based fees. It advises 3 private funds.
The request: Watch Winthrop Square Capital, L.P. (CRD number 321630): 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
- 321630
- SEC file number
- 801-125848
- SEC status
- Approved, effective June 9, 2022
- Main office
- 131 Dartmouth Street 3rd Floor, Boston, MA 02116
- Phone
- (617) 340-7670
- Website
- winthropsquarecapital.com
- Regulatory AUM
- $166,772,846 in the Form ADV filed February 24, 2026
- Discretionary AUM
- $166,772,846
- Accounts
- 3
- Employees
- 4, of which 4 give investment advice
- Form of organization
- Limited Partnership
- Paid through
- a percentage of assets under management, performance based fees
- Private funds
- 3: 3 venture capital funds
- Gross assets of private funds
- $95,016,647
- Form ADV Item 11 disclosures
- None reported
- Latest Form ADV filing
- February 24, 2026
- 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 |
|---|---|---|
| Pooled investment vehicles | 3 | $166.8 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 |
|---|---|---|
| March 2, 2026 | $166.8 million | February 24, 2026 |
| December 1, 2025 | $165.1 million | March 20, 2025 |
Other advisers in Boston
| Adviser | City | AUM | Private funds | Source |
|---|---|---|---|---|
| Epilog Partners, LP. | Boston | $181.6 million | 2 | adviserinfo.sec.gov |
| The Watermill Group | Boston | $178.1 million | 18 | adviserinfo.sec.gov |
| Sippican Capital Advisors | Boston | $175 million | Not listed | adviserinfo.sec.gov |
| Levatus LLC | Boston | $173.9 million | Not listed | adviserinfo.sec.gov |
| SF Advisers, LLC | Boston | $172.5 million | 4 | adviserinfo.sec.gov |
| Broadwater Capital Management LLC | Boston | $161 million | Not listed | adviserinfo.sec.gov |
| Blue Moon Capital Management LLC | Boston | $159.5 million | 1 | adviserinfo.sec.gov |
| Radius Wealth Management, Inc. | Boston | $158.7 million | Not listed | adviserinfo.sec.gov |
Also on SpecStream
- Investment advisers in Boston, MA
- Investment advisers in Massachusetts
- Advisers with $100 million to $500 million in AUM
- Advisers serving pooled investment vehicles
- Advisers that manage private funds
- Winthrop Square Capital, L.P. 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.