Firm profile

Weiss Asset Management

BOSTON, MACRD 155564Registration Status: ApprovedEffective since March 30, 2012SEC # 801-73590Latest ADV March 20, 2026

Weiss Asset Management is an SEC registered investment adviser organized as a limited partnership with a primary office location in Boston, MA. Its latest Form ADV filing, dated March 20, 2026, reports $15.6B in regulatory assets under management, 139 employees, 4 offices, and 2 accounts.

Assets Under Management
$15.6B
Employees
139
Offices
4 offices
Total Clients
<5

Associated firm names

5 names listed
  • BIP GP LLCRelying adviser
  • WEISS ASSET MANAGEMENT LP
  • WEISS ASSET MANAGEMENT
  • NIPPON OPPORTUNITY MANAGEMENT LLCRelying adviser

Leadership

3 roles identified
CEOAndrew M. Weiss
CCOGeorgiy Nikitin
COOMatthew J. Rinaldi

Advisory services offered

1 types reported
Portfolio management for pooled investment vehicles

Fee models offered

3 types reported
Asset based fees
Other fee arrangements
Performance-based fees

Offices & Contact

Primary office

BOSTON, Massachusetts, United States

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Primary office regionOther reported regions

Shading shows states and countries with reported offices. Cities are listed below; shading does not indicate service coverage.

Massachusetts

BOSTONPrimary office

California

SAN FRANCISCO

Hong Kong

HONG KONG

New York

NEW YORK CITY

4 office records listed · 4 total offices reported. Counts can use different reporting dates. SEC filers may list only their largest 25 additional offices.

Contact and digital presence

ADV profile links

Regulatory Assets Under Management Breakdown

Total regulatory assets under management$15.6Bas of March 20, 2026
Discretionary100.0%
$15.6B
100% of total RAUM100.0%
Non-discretionary0.0%
$0
0% of total RAUM0.0%
All regulatory assets under management are discretionary.

Client Coverage Demographics

Top client segmentPooled Investment Vehicles represent 100.0% of total clients.
Top client categories% of clientsClients
1
Pooled Investment Vehicles
100.0%
2

Assets under management Growth by Quarter

Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.

Total AUM$15.6B
Total Accounts2
10Y AUM Change+$13.3B (+578.3%)

Private Funds

Private funds reported by Weiss Asset Management

Loading private fund disclosures…

Employee Growth by Quarter

Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.

Total Employees139
Clients per Employee0:1
10Y Employee Change+95 (+215.9%)

Historical AUM and employee figures reflect available SEC Form ADV filings under this CRD. Filing gaps may reflect registration status changes, dormant periods, state registration periods, firm restructuring, or other reporting changes. Rialytix does not interpolate missing periods.


Ownership

Ownership information is not yet available for this profile.

Compliance & Disclosures

Filing dated 3/20/2026 12:46:42 PM

Responses were selected by the RIA in its filing. Questions are shortened for readability; “you” refers to the reporting firm, and some questions also cover advisory affiliates.

RIA or supervised-person involvementThe RIA reported that one or more events below involve the firm or its supervised persons.RIA responseYes
AFelonies2 No

In the past ten years, have you or any advisory affiliate:

  • A1Been convicted of or pleaded guilty or no contest to a felony?No
  • A2Been charged with a felony?No
BMisdemeanors2 No

In the past ten years, have you or any advisory affiliate:

  • B1Been convicted of or pleaded guilty or no contest to a misdemeanor involving investments, an investment-related business, fraud, false statements or omissions, wrongful taking of property, bribery, perjury, forgery, counterfeiting, or extortion?No
  • B2Been charged with a misdemeanor of the kind listed above?No
CSEC or CFTC actions3 Yes2 No

Has the SEC or CFTC ever:

  • C1Found you or an advisory affiliate made a false statement or omission?No
  • C2Found you or an advisory affiliate violated SEC or CFTC regulations or statutes?Yes
  • C3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • C4Entered an order against you or an advisory affiliate in connection with investment-related activity?Yes
  • C5Imposed a civil money penalty on you or an advisory affiliate, or ordered you or an advisory affiliate to cease and desist from any activity?Yes
DOther regulatory actions5 No

Has any other federal regulatory agency, state regulatory agency, or foreign financial regulatory authority ever:

  • D1Found you or an advisory affiliate made a false statement or omission, or was dishonest, unfair, or unethical?No
  • D2Found you or an advisory affiliate violated investment-related regulations or statutes?No
  • D3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • D4In the past ten years, entered an order against you or an advisory affiliate in connection with investment-related activity?No
  • D5Denied, suspended, or revoked your or an advisory affiliate’s registration or license, or otherwise prevented association with an investment-related business or restricted activities?No
ESelf-regulatory organization actions4 No

Has a self-regulatory organization or commodities exchange ever:

  • E1Found you or an advisory affiliate made a false statement or omission?No
  • E2Found you or an advisory affiliate violated its rules, other than a violation designated as a minor rule violation under an SEC-approved plan?No
  • E3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • E4Disciplined you or an advisory affiliate by expulsion, suspension, barring association with other members, or otherwise restricting activities?No
FProfessional authorizations1 No
  • FHas an authorization to act as an attorney, accountant, or federal contractor granted to you or an advisory affiliate ever been revoked or suspended?No
GPending regulatory proceedings1 No
  • GAre you or any advisory affiliate now the subject of a regulatory proceeding that could result in a “Yes” answer to any part of C, D, or E?No
HCivil judicial actions and proceedings4 No

(1) Court actions

Has a domestic or foreign court:

  • H(1)(a)In the past ten years, enjoined you or an advisory affiliate in connection with investment-related activity?No
  • H(1)(b)Found that you or an advisory affiliate violated investment-related statutes or regulations?No
  • H(1)(c)Dismissed, pursuant to a settlement agreement, an investment-related civil action brought against you or an advisory affiliate by a state or foreign financial regulatory authority?No

(2) Pending civil proceedings

  • H(2)Are you or any advisory affiliate now the subject of a civil proceeding that could result in a “Yes” answer to any part of H(1)?No
Additional DRP filings 1 source block

Verbatim excerpts from supporting DRP filings, which may concern the firm or advisory affiliates. Amounts retain their filed labels; no total or attribution is inferred.

regulatory · block 1PDF pages 86–88
Regulator name — filed text
SECURITIES AND EXCHANGE COMMISSION
Monetary/Fine Amount — filed text
$ 200,000.00
How was matter resolved — filed text
Settled

Action status / disposition — filed text

WEISS ASSET MANAGEMENT ENTERED INTO AN OFFER OF SETTLEMENT WITH THE SECURITIES AND EXCHANGE COMMISSION TO RESOLVE THE MATTER, AND IT WAS FILED AS A SETTLED REGULATORY PROCEEDING.
Other filed details

Description of allegations — filed text

THIS REGULATORY ACTION IS RELATED TO WEISS ASSET MANAGEMENT IDENTIFYING AND SELF-REPORTING SEVEN VIOLATIONS OF RULE 105 OF REGULATION M UNDER THE SECURITIES EXCHANGE ACT OF 1934. RULE 105 GENERALLY PROHIBITS BUYING AN EQUITY SECURITY IN AN UNDERWRITTEN SECONDARY PUBLIC OFFERING IF THE BUYER SOLD SHORT THE SAME SECURITY DURING THE RESTRICTED PERIOD SPECIFIED IN THE RULE (GENERALLY FIVE BUSINESS DAYS BEFORE THE PRICING OF THE OFFERING).

Sanction detail — filed text

PENALTY: $200,000; DISGORGEMENT: $6,508,792.81; PREJUDGMENT INTEREST: $190,210.84; TOTAL: $6,899,003.65, WHICH WAS PAID ON JUNE 15, 2022.
Full extracted filing text

Includes form instructions and options. Options shown in this text do not identify which boxes were selected.

GENERAL INSTRUCTIONS
This Disclosure Reporting Page (DRP ADV) is an 
INITIAL OR
AMENDED response used to report details for affirmative responses to Items 11.C., 11.D.,
11.E., 11.F. or 11.G. of Form ADV.
Regulatory Action
Check item(s) being responded to:
11.C(1)
11.C(2)
11.C(3)
11.C(4)
11.C(5)
11.D(1)
11.D(2)
11.D(3)
11.D(4)
11.D(5)
11.E(1)
11.E(2)
11.E(3)
11.E(4)
11.F.
11.G.
Use a separate DRP for each event or proceeding . The same event or proceeding may be reported for more than one person or entity using one DRP. File
with a completed Execution Page. 

One event may result in more than one affirmative answer to Items 11.C., 11.D., 11.E., 11.F. or 11.G. Use only one DRP to report details related to the
same event. If an event gives rise to actions by more than one regulator, provide details for each action on a separate DRP.
PART I
A.  The person(s) or entity(ies) for whom this DRP is being filed is (are):
You (the advisory firm)
You and one or more of your advisory affiliates
One or more of your advisory affiliates
If this DRP is being filed for an advisory affiliate, give the full name of the advisory affiliate below (for individuals, Last name, First name, Middle name). 
If the advisory affiliate has a CRD number, provide that number. If not, indicate "non-registered" by checking the appropriate box.
ADV DRP - ADVISORY AFFILIATE
No Information Filed
This DRP should be removed from the ADV record because the advisory affiliate(s) is no longer associated with the adviser.
This DRP should be removed from the ADV record because: (1) the event or proceeding occurred more than ten years ago or (2) the adviser is
registered or applying for registration with the SEC or reporting as an exempt reporting adviser with the SEC and the event was resolved in the
adviser's or advisory affiliate's favor.
If you are registered or registering with a state securities authority , you may remove a DRP for an event you reported only in response to Item
11.D(4), and only if that event occurred more than ten years ago. If you are registered or registering with the SEC, you may remove a DRP for any
event listed in Item 11 that occurred more than ten years ago.
This DRP should be removed from the ADV record because it was filed in error, such as due to a clerical or data-entry mistake. Explain the
circumstances: 
B.
If the advisory affiliate is registered through the IARD system or CRD system, has the advisory affiliate submitted a DRP (with Form ADV, BD or U-4) to
the IARD or CRD for the event? If the answer is "Yes," no other information on this DRP must be provided.
 Yes
 No
NOTE: The completion of this form does not relieve the advisory affiliate of its obligation to update its IARD or CRD records.
PART II
1.  Regulatory Action initiated by:
SEC   
Other Federal   
State   
SRO
Foreign
(Full name of regulator, foreign financial regulatory authority, federal, state, or SRO) 
SECURITIES AND EXCHANGE COMMISSION
2.
Principal Sanction:
Cease and Desist
Other Sanctions: 
DISGORGEMENT; PREJUDGMENT INTEREST; CIVIL MONEY PENALTY
3.
Date Initiated (MM/DD/YYYY): 
06/14/2022
 Exact
 Explanation
If not exact, provide explanation:
THIS IS THE DATE OF THE SEC ORDER INSTITUTING CEASE-AND-DESIST PROCEEDINGS.
4.
Docket/Case Number:
ADMINISTRATIVE PROCEEDING FILE NO. 3-20899
5.
Advisory Affiliate Employing Firm when activity occurred which led to the regulatory action (if applicable):
6.
Principal Product Type:
Equity Listed (Common & Preferred Stock)
Other Product Types: 
7.
Describe the allegations related to this regulatory action (your response must fit within the space provided):
THIS REGULATORY ACTION IS RELATED TO WEISS ASSET MANAGEMENT IDENTIFYING AND SELF-REPORTING SEVEN VIOLATIONS OF RULE 105 OF
REGULATION M UNDER THE SECURITIES EXCHANGE ACT OF 1934. RULE 105 GENERALLY PROHIBITS BUYING AN EQUITY SECURITY IN AN
UNDERWRITTEN SECONDARY PUBLIC OFFERING IF THE BUYER SOLD SHORT THE SAME SECURITY DURING THE RESTRICTED PERIOD SPECIFIED IN THE
RULE (GENERALLY FIVE BUSINESS DAYS BEFORE THE PRICING OF THE OFFERING).

8.
Current Status?      
 Pending
 On Appeal
 Final
9.
If on appeal, regulatory action appealed to (SEC, SRO, Federal or State Court) and Date Appeal Filed:
If Final or On Appeal, complete all items below. For Pending Actions, complete Item 13 only.
10. How was matter resolved:
Settled
11. Resolution Date (MM/DD/YYYY):
06/14/2022
 Exact
 Explanation
If not exact, provide explanation:
12. Resolution Detail:
A.  Were any of the following Sanctions Ordered (check all appropriate items)?
 Monetary/Fine Amount: $ 200,000.00
 Revocation/Expulsion/Denial
 Disgorgement/Restitution
 Censure
 Cease and Desist/Injunction
 Bar
 Suspension
B.
Other Sanctions Ordered:
PREJUDGMENT INTEREST
Sanction detail: if suspended, enjoined or barred, provide duration including start date and capacities affected (General Securities Principal,
Financial Operations Principal, etc.). If requalification by exam/retraining was a condition of the sanction, provide length of time given to
requalify/retrain, type of exam required and whether condition has been satisfied. If disposition resulted in a fine, penalty, restitution,
disgorgement or monetary compensation, provide total amount, portion levied against you or an advisory affiliate, date paid and if any portion
of penalty was waived: 
PENALTY: $200,000; DISGORGEMENT: $6,508,792.81; PREJUDGMENT INTEREST: $190,210.84; TOTAL: $6,899,003.65, WHICH WAS PAID ON
JUNE 15, 2022.
13. Provide a brief summary of details related to the action status and (or) disposition and include relevant terms, conditions and dates (your response
must fit within the space provided).
WEISS ASSET MANAGEMENT ENTERED INTO AN OFFER OF SETTLEMENT WITH THE SECURITIES AND EXCHANGE COMMISSION TO RESOLVE THE MATTER,
AND IT WAS FILED AS A SETTLED REGULATORY PROCEEDING.

* Metrics are based on the latest available data, including Form ADV filings, brochures, and relationship summaries pulled from the SEC IAPD, and may be subject to change. Learn what is included in the Rialytix data. Please refer to the firm's official disclosures for the most accurate information using their CRD number. This is not investment advice.