Assets under management Growth by Quarter
Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.
Total AUM
Total Accounts
10Y AUM Change
Private Funds
Private funds reported by Cgam
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Employee Growth by Quarter
Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.
Total Employees
Clients per Employee
10Y Employee Change
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
Reported direct and indirect ownership ranges
Each range applies to a separate reported relationship and should not be added together.
Reported ownership ranges
Highlighted bands show the percentage range reported in Form ADV.
0%25%50%75%100%
CALAMOS ADVISORS LLCDirect owner · Schedule AInterest in CGAM
50% to < 75%
ORIGINAL C FUND LLCDirect owner · Schedule AInterest in CGAM
50% to < 75%
GIANNIS SINA UGO ANTETOKOUNMPODirect owner · Schedule AInterest in CGAM
25% to < 50%
CALAMOS INVESTMENTS LLCIndirect owner · Schedule BInterest in CALAMOS ADVISORS LLC
75%+
CALAMOS PARTNERS LLCIndirect owner · Schedule BInterest in CALAMOS INVESTMENTS LLC
75%+
JOHN P. CALAMOS, TRUSTEE, UNDER THE JOHN P. CALAMOS 1985 TRUSTIndirect owner · Schedule BInterest in CALAMOS FAMILY PARTNERS, INC.
75%+
JOHN PETER CALAMOS SR.Indirect owner · Schedule BInterest in JOHN P. CALAMOS, TRUSTEE, UNDER THE JOHN P. CALAMOS 1985 TRUST
75%+
ORIGINAL PE, LLCIndirect owner · Schedule BInterest in ORIGINAL C FUND LLC
75%+
GIANNIS SINA UGO ANTETOKOUNMPOIndirect owner · Schedule BInterest in ORIGINAL PE, LLC
75%+
JOHN PETER CALAMOS SR.Indirect owner · Schedule BInterest in JOHN P. CALAMOS QTIP TRUST
75%+
JOHN P. CALAMOS QTIP TRUSTIndirect owner · Schedule BInterest in CALAMOS PARTNERS LLC
75%+
JOHN SPIRO KOUDOUNISIndirect owner · Schedule BInterest in CALAMOS EQUITY PARTNERS LLC
75%+
ORIGINAL PE, LLCIndirect owner · Schedule BInterest in ORIGINAL C FUND LLC
50% to < 75%
JOHN P. CALAMOS QTIP TRUSTIndirect owner · Schedule BInterest in CALAMOS ASSET MANAGEMENT, INC.
50% to < 75%
JOHN SPIRO KOUDOUNISIndirect owner · Schedule BInterest in CALAMOS ASSET MANAGEMENT, INC.
25% to < 50%
Bars represent the reported range at that individual ownership step, not an estimated percentage of the advisory firm. Indirect relationships may refer to intermediate entities rather than directly to Cgam.
Reported ownership and control details
Form ADV · Filing date 2026-07-23 · Schedules A and B
| # | Owner / person & role | Interest in entity | Reported interest | Control person | Title / status acquired | Source |
|---|---|---|---|---|---|---|
| 1 | CALAMOS ADVISORS LLCMEMBERDomestic entity | CGAM | 50% to less than 75%Code D | Yes | MEMBER07/2022 | Schedule APDF page 44 |
| 2 | JOHN PETER CALAMOS SR.GLOBAL CHIEF INVESTMENT OFFICERIndividual | CGAM | Less than 5%Code NA | Yes | GLOBAL CHIEF INVESTMENT OFFICER07/2022 | Schedule APDF page 44 |
| 3 | JOHN SPIRO KOUDOUNISDIRECTOR, CHAIRMAN AND CHIEF EXECUTIVE OFFICERIndividual | CGAM | Less than 5%Code NA | Yes | DIRECTOR, CHAIRMAN AND CHIEF EXECUTIVE OFFICER07/2022 | Schedule APDF page 44 |
| 4 | Thomas Edward HermanCHIEF FINANCIAL OFFICER AND TREASURERIndividual | CGAM | Less than 5%Code NA | Yes | CHIEF FINANCIAL OFFICER AND TREASURER07/2022 | Schedule APDF page 44 |
| 5 | Daniel Leo DufresnePRESIDENTIndividual | CGAM | Less than 5%Code NA | Yes | PRESIDENT07/2022 | Schedule APDF page 44 |
| 6 | Constance E Stavropoulos PalasCHIEF COMPLIANCE OFFICERIndividual | CGAM | Less than 5%Code NA | No | CHIEF COMPLIANCE OFFICER07/2022 | Schedule APDF page 44 |
| 7 | ORIGINAL C FUND LLCMEMBERDomestic entity | CGAM | 50% to less than 75%Code D | Yes | MEMBER08/2022 | Schedule APDF page 44 |
| 8 | GIANNIS SINA UGO ANTETOKOUNMPODIRECTORIndividual | CGAM | 25% to less than 50%Code C | Yes | DIRECTOR07/2022 | Schedule APDF page 44 |
| 9 | JOHN HARRY SIANISDIRECTORIndividual | CGAM | Less than 5%Code NA | Yes | DIRECTOR07/2022 | Schedule APDF page 44 |
| 10 | CHRISTOPHER STEPHEN RUSSELLSECRETARYIndividual | CGAM | Less than 5%Code NA | Yes | SECRETARY07/2022 | Schedule APDF page 44 |
| 11 | Erik Donald OjalaCHIEF LEGAL OFFICERIndividual | CGAM | Less than 5%Code NA | Yes | CHIEF LEGAL OFFICER07/2023 | Schedule APDF page 44 |
| 12 | Dylan Richard WondraDIRECTORIndividual | CGAM | Less than 5%Code NA | Yes | DIRECTOR10/2023 | Schedule APDF page 44 |
| 13 | CALAMOS INVESTMENTS LLCSOLE MEMBER / MANAGERDomestic entity | CALAMOS ADVISORS LLC | 75% or moreCode E | Yes | SOLE MEMBER / MANAGER10/2004 | Schedule BPDF page 44 |
| 14 | CALAMOS PARTNERS LLCSOLE MANAGER/MEMBERDomestic entity | CALAMOS INVESTMENTS LLC | 75% or moreCode E | Yes | SOLE MANAGER/MEMBER07/2016 | Schedule BPDF page 44 |
| 15 | CALAMOS ASSET MANAGEMENT, INC.MEMBERDomestic entity | CALAMOS INVESTMENTS LLC | Percentage not specifiedCode F | Yes | MEMBER10/2004 | Schedule BPDF page 44 |
| 16 | CALAMOS FAMILY PARTNERS, INC.MEMBERDomestic entity | CALAMOS PARTNERS LLC | Percentage not specifiedCode F | Yes | MEMBER09/2014 | Schedule BPDF page 44 |
| 17 | JOHN P. CALAMOS, TRUSTEE, UNDER THE JOHN P. CALAMOS 1985 TRUSTSHAREHOLDERDomestic entity | CALAMOS FAMILY PARTNERS, INC. | 75% or moreCode E | Yes | SHAREHOLDER10/2004 | Schedule BPDF page 44 |
| 18 | JOHN PETER CALAMOS SR.TRUSTEE AND SHAREHOLDERIndividual | JOHN P. CALAMOS, TRUSTEE, UNDER THE JOHN P. CALAMOS 1985 TRUST | 75% or moreCode E | Yes | TRUSTEE AND SHAREHOLDER08/1985 | Schedule BPDF page 44 |
| 19 | JOHN SPIRO KOUDOUNISSHAREHOLDERIndividual | CALAMOS ASSET MANAGEMENT, INC. | 25% to less than 50%Code C | Yes | SHAREHOLDER12/2020 | Schedule BPDF page 44 |
| 20 | JOHN SPIRO KOUDOUNISMANAGER AND SHAREHOLDERIndividual | CALAMOS PARTNERS LLC | Percentage not specifiedCode F | Yes | MANAGER AND SHAREHOLDER07/2016 | Schedule BPDF page 45 |
| 21 | JOHN PETER CALAMOS SR.MANAGERIndividual | CALAMOS PARTNERS LLC | Percentage not specifiedCode F | Yes | MANAGER07/2016 | Schedule BPDF page 45 |
| 22 | ORIGINAL PE, LLCCLASS A MEMBERDomestic entity | ORIGINAL C FUND LLC | 75% or moreCode E | Yes | CLASS A MEMBER08/2022 | Schedule BPDF page 45 |
| 23 | ORIGINAL PE, LLCCLASS B MEMBERDomestic entity | ORIGINAL C FUND LLC | 50% to less than 75%Code D | Yes | CLASS B MEMBER08/2022 | Schedule BPDF page 45 |
| 24 | GIANNIS SINA UGO ANTETOKOUNMPOMEMBERIndividual | ORIGINAL PE, LLC | 75% or moreCode E | Yes | MEMBER06/2021 | Schedule BPDF page 45 |
| 25 | JOHN P. CALAMOS QTIP TRUSTSHAREHOLDERDomestic entity | CALAMOS ASSET MANAGEMENT, INC. | 50% to less than 75%Code D | Yes | SHAREHOLDER06/2026 | Schedule BPDF page 45 |
| 26 | JOHN PETER CALAMOS SR.TRUSTEE AND SHAREHOLDERIndividual | JOHN P. CALAMOS QTIP TRUST | 75% or moreCode E | Yes | TRUSTEE AND SHAREHOLDER06/2026 | Schedule BPDF page 45 |
| 27 | JOHN P. CALAMOS QTIP TRUSTSHAREHOLDERDomestic entity | CALAMOS PARTNERS LLC | 75% or moreCode E | Yes | SHAREHOLDER06/2026 | Schedule BPDF page 45 |
| 28 | CALAMOS EQUITY PARTNERS LLCMEMBERDomestic entity | CALAMOS INVESTMENTS LLC | Percentage not specifiedCode F | Yes | MEMBER06/2026 | Schedule BPDF page 45 |
| 29 | JOHN SPIRO KOUDOUNISMEMBERIndividual | CALAMOS EQUITY PARTNERS LLC | 75% or moreCode E | Yes | MEMBER06/2026 | Schedule BPDF page 45 |
| 30 | Daniel Leo DufresneMEMBERIndividual | CALAMOS EQUITY PARTNERS LLC | Percentage not specifiedCode F | Yes | MEMBER06/2026 | Schedule BPDF page 45 |
Less than 5% may include zero. Code F identifies a role without specifying a percentage. Reported interests may overlap and may not include every owner. Total indirect ownership is not calculated.
Compliance & Disclosures
Filing dated 7/23/2026 6:41:08 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 none of the events below involve the firm or its supervised persons.RIA responseNo
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 actions5 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?No
- 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?No
- 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?No
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
* 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.