Data / Investment advisers / Massachusetts / Weiss Asset Management
Weiss Asset Management, Boston, MA: $15.6 billion AUM, SEC registered investment adviser
Weiss Asset Management is an SEC registered investment adviser with its main office in Boston, Massachusetts and reports $15.6 billion in regulatory assets under management in its Form ADV filed March 20, 2026. Its clients include pooled investment vehicles. It is paid through a percentage of assets under management, performance based fees and other fees. It advises 2 private funds.
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- Registration
- SEC registered investment adviser
- CRD number
- 155564
- SEC file number
- 801-73590
- SEC status
- Approved, effective March 30, 2012
- Legal name
- Weiss Asset Management LP
- Main office
- 222 Berkeley Street 16th Floor, Boston, MA 02116
- Phone
- (617) 778-7780
- Website
- weissasset.com
- Regulatory AUM
- $15,557,388,898 in the Form ADV filed March 20, 2026
- Discretionary AUM
- $15,557,388,898
- Accounts
- 2
- Employees
- 139, of which 64 give investment advice
- Form of organization
- Limited Partnership
- Paid through
- a percentage of assets under management, performance based fees, other fees
- Private funds
- 2: 2 hedge funds
- Gross assets of private funds
- $15,557,388,898
- Other offices
- 3
- Umbrella registration
- 3 relying advisers
- Form ADV Item 11 disclosures
- Reported: SEC or CFTC regulatory actions
- Latest Form ADV filing
- March 20, 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 | 2 | $15.56 billion |
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 |
|---|---|---|
| April 1, 2026 | $15.56 billion | March 20, 2026 |
| December 1, 2025 | $10.73 billion | September 5, 2025 |
Other advisers in Boston
| Adviser | City | AUM | Private funds | Source |
|---|---|---|---|---|
| Mackenzie Investments | Boston | $18.07 billion | 8 | adviserinfo.sec.gov |
| Merganser Capital Management, LLC | Boston | $17.66 billion | 4 | adviserinfo.sec.gov |
| Ra Capital Management, LP | Boston | $16.40 billion | 6 | adviserinfo.sec.gov |
| Bain Capital Asset Management, LP | Boston | $16.29 billion | 43 | adviserinfo.sec.gov |
| Battery Management Corp. | Boston | $15.61 billion | 60 | adviserinfo.sec.gov |
| CW Advisors, LLC | Boston | $15.22 billion | 4 | adviserinfo.sec.gov |
| Abry Partners II, LLC | Boston | $14.90 billion | 29 | adviserinfo.sec.gov |
| Congress Asset Management Company, LLP | Boston | $14.20 billion | Not listed | adviserinfo.sec.gov |
Also on SpecStream
- Investment advisers in Boston, MA
- Investment advisers in Massachusetts
- Advisers with $10 billion to $100 billion in AUM
- Advisers serving pooled investment vehicles
- Advisers that manage private funds
- Weiss Asset Management on the SEC's adviser search
Updated November 7, 2026. Read from the SEC's Form ADV data files for investment advisers. 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.