Skip to content

Weiss Asset Management

SEC-registered adviser since 2012Boston, MACRD 155564

2
Clients
64
Advisory staff

From Form ADV filed 20 March 2026 · data retrieved 15 October 2026SEC record

Weiss Asset Management is an investment adviser headquartered in Boston, Massachusetts, and registered with the SEC since 2012. Its clients include pooled investment vehicles.

Its services include portfolio management for pooled vehicles. Fee arrangements include a percentage of assets under management, performance-based fees and other arrangements. Wam Employee LLC owns 75% or more of Weiss Asset Management, and Andrew Weiss is its CEO.

Clients

Weiss Asset Management serves 2 clients. The average client has about $7.78 billion with the firm.

Regulatory assets by client type
  • Pooled investment vehicles2 clients100%
Show client breakdown
Pooled investment vehicles
Clients
2
Regulatory AUM
$15,557,388,898
Share
100.0%
Avg. per client
$7.78B

Total

Clients
2
Regulatory AUM
$15,557,388,898
Share
100%
Avg. per client
$7.78B

What it does

Weiss Asset Management provides portfolio management for pooled vehicles. It is paid through a percentage of assets, performance-based fees and other arrangements.

Weiss Asset Management advises 2 private funds.

100.0% of assets ($15.56B across 2 accounts) are managed with discretion. 50% of clients are outside the U.S., and 0 clients received advice without assets under management last fiscal year.

Custodians

Weiss Asset Management has custody of client assets.

Managed account assets by custodian
  • All other custodians$15.56B100%

Ownership and leadership

Wam Employee LLC owns 75% or more of Weiss Asset Management, and Andrew Weiss is its CEO.

Who owns the firm
Weiss Asset Management LP· the adviser
  • Wam Employee LLC

    Control person · since February 2025

    Owns 75% or more of Weiss Asset Management LP
  • Andrew Weiss

    Control person · since May 2017

    Owns 25% to 50% of Weiss Asset Management LP

Leadership

  • Andrew Weiss
    Chief Executive Officer of General Partner
  • Matthew Rinaldi
    Vice President, Chief Operating Officer
  • Georgiy Nikitin
    Chief Compliance Officer
  • Eric Ruiz
    General Counsel

Staff

  • 139 employees
  • 64 in advisory functions

Reported holdings

Weiss Asset Management’s reported 13F holdings total $9.54B across 624 positions, and the ten largest make up 37.6% of it.

$9.54B
Reported 13F value
624
Positions
37.6%
In the 10 largest
+60.6%
Value vs. prior quarter
Ten largest positions, share of reported value
  1. Nvidia Corporation11.0%
  2. Micron Technology Inc.9.0%
  3. Super Micro Computer Inc. · 7 Dep CM SR A WI2.6%
  4. Super Micro Computer Inc. · Note 2.250% 7/12.6%
  5. Super Micro Computer Inc. · Note 3.500% 3/02.2%
  6. Super Micro Computer Inc.Put2.2%
  7. Nvidia CorporationPut2.1%
  8. Tesla Inc.2.0%
  9. Boeing CO · Dep Conv Pfd A2.0%
  10. Strategy Inc. · Note 0.625% 3/11.9%

Together, the ten largest are 37.6% of reported value.

The 50 largest positions and quarterly changesQuarter ended 30 June 2026 · filed 14 August 2026

A 13F covers only exchange-traded long positions the firm holds with discretion, so this $9.54B is not its $15.56B in regulatory assets and does not represent any individual client's portfolio.

Fees

Weiss Asset Management is paid through a percentage of assets under management, performance-based fees and other.

Weiss Asset Management’s fee rates are not included in this profile. Find its brochure on the SEC’s site.

Offices and registrations

Besides its headquarters, Weiss Asset Management has 3 offices, with 3 listed addresses across 3 states.

Listed office addresses by state

Massachusetts · 1 listed address

  • 222 Berkeley Street, 16th Floor, BostonHQ

Registration details

Legal name
Weiss Asset Management LP
Headquarters
222 Berkeley Street, 16th Floor, Boston, MA 02116
SEC file
801-73590
Structure
Delaware limited partnership
Fiscal year end
December

This directory does not report disciplinary history, for any firm or individual, in either direction. The SEC publishes the complete record, including any disciplinary events, and it is the authoritative place to check one. See this firm's record on adviserinfo.sec.gov

Common questions

How many clients does Weiss Asset Management have?

Weiss Asset Management has 2 clients and manages $15.6 billion for them, as of March 2026.

Source: Form ADV Part 1A, Items 5.D and 5.F, filed 20 March 2026

What services does Weiss Asset Management offer?

Weiss Asset Management provides portfolio management for pooled vehicles.

Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file

How many financial advisors does Weiss Asset Management have?

Weiss Asset Management has 0 investment adviser representatives registered with state securities authorities, out of 139 employees, and 64 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.

Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file

Who owns Weiss Asset Management?

Weiss Asset Management’s direct owners are Andrew Weiss (25% to 50%) and Wam Employee LLC (75% or more).

Source: Form ADV Part 1A, Schedules A and B, filed 20 March 2026

How does Weiss Asset Management get paid?

Weiss Asset Management is paid through a percentage of assets under management, performance-based fees and other arrangements. Its Form ADV lists no commissions among how it is paid.

Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file

Sources

  1. Form ADV Part 1A, amendment filed 20 March 2026. Items 1, 5, 9, 11 and Schedules A, B and D.
  2. IAPD firm record, CRD 155564.
  3. Form 13F-HR, filed 14 August 2026 for the quarter ended 30 June 2026.

Retrieved 15 October 2026. All are published by the SEC and may have been amended since.

Download source data (JSON)How this directory is compiledReport a correction

This profile is compiled from public regulatory filings and is provided for informational purposes only. Niva Wealth is not affiliated with Weiss Asset Management LP and makes no representation about the quality of its services. Figures reflect the filing dates shown and may have changed. Ownership percentages are the bands reported to the SEC, not exact figures.