Calamos Advisors Llc
SEC-registered
Mutual Fund / Asset Manager · Large ($10B–$100B)
CRD 105758
· SEC file 801-29688
· Naperville, IL
· X.COM
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ADV data as of Jul 23, 2026
- Regulatory AUM
- $43.9B
- Discretionary
- $43.9B
- Clients
- 1,957
- Avg AUM / client
- $22.4M
- Accounts
- 1,957
- Employees
- 300
AUM over time
$18.3B
$43.9B
Dec 2011
Jul 2026
Annual snapshots from Form ADV filings · as of Jul 23, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Individuals (non-high net worth) | 364 | $370M | 0.84% |
| High net worth individuals | 1,372 | $1.5B | 3.49% |
| Investment companies | 74 | $40.0B | 91.1% |
| Pension and profit sharing plans | 41 | $427M | 0.97% |
| Charitable organizations | 24 | $75.9M | 0.17% |
| State or municipal government entities | 4 | $49.5M | 0.11% |
| Insurance companies | 8 | $883M | 2.01% |
| Corporations and other businesses | 70 | $555M | 1.26% |
Private funds (2)
Reported in Form ADV Section 7.B.(1), filing of Mar 2024 · $156M combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Calamos Global Opportunities Fund Lp | Other Private Fund | Delaware | $153M | 9 |
| Calamos Ares Quant Fund I, Lp | Other Private Fund | Delaware | $3.0M | 2 |
Retirement plan clients
Plans that reported this firm as an investment service provider on Form 5500 Schedule C.
| Plan | Location | Plan year |
|---|---|---|
| Fulton Financial Affiliates Defined Benefit Pension Plan Fulton Financial Corporation | 2024 | |
| Laborers District Council Of W Pa Pension Fund Laborers District Council Of W Pa Pension Fund Board Of Trustees | 2024 |
People (44)
roster as of Jul 20, 2026| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| John Peter Calamos Sr. | Manager | Jan 2015 (12y) | GP / trustee / elected manager of Calamos Partners Llc (indirect) | |
| Koudounis, John, Spiro | Manager | Jul 2016 (10y) | GP / trustee / elected manager of Calamos Partners Llc (indirect) | |
| Takahashi, William, J | Manager | Jul 2016 (10y) | GP / trustee / elected manager of Calamos Partners Llc (indirect) | |
| Dufresne, Daniel, Leo | Evp, Chief Operating Officer | Apr 2021 (5y) | Less than 5% | |
| Ojala, Erik, Donald | Svp General Counsel & Secretary | Jul 2023 (3y) | Less than 5% | |
| Richard Scott Henderson | Registered representative | CFA | Dec 2012 (14y) | |
| Carlos Alfonso Soriano | Registered representative | Dec 2012 (14y) | ||
| Neil Justin Hyneman | Registered representative | CFP | Dec 2012 (14y) | |
| Timothy Eric Meek | Registered representative | CFP | Dec 2012 (14y) | |
| Douglas Evan Berman | Registered representative | Mar 2013 (13y) | ||
| Evan Michael Wright | Registered representative | CFA | Aug 2013 (13y) | |
| Paul Joseph Giovanniello | Registered representative | Mar 2014 (12y) | ||
| Megan Frances Cleary | Registered representative | Jul 2014 (12y) | ||
| Gregory Matthew Kuhl | Registered representative | CFA | Mar 2015 (11y) | |
| Michael Dean Grant | Registered representative | Oct 2015 (11y) | ||
| Christian John Brobst | Registered representative | Jul 2017 (9y) | ||
| Joseph F Cusick | Registered representative | Mar 2019 (7y) | ||
| John Harry Sianis | Registered representative | Jul 2019 (7y) | ||
| Kevin R Crouch | Registered representative | Nov 2019 (7y) | ||
| Michael George Kassab | Registered representative | CFA | Nov 2019 (7y) | |
| Lisa Marie Mursu | Registered representative | Nov 2019 (7y) | ||
| Anthony S Tursich | Registered representative | CFA | Sep 2021 (5y) | |
| Jeffrey Eric Shelton | Registered representative | Jun 2023 (3y) | ||
| Robert Girgis | Registered representative | Mar 2024 (2y) | ||
| Matthew Jon Eastman | Registered representative | Mar 2024 (2y) | ||
| Seth Edwin Steele | Registered representative | Apr 2024 (2y) | ||
| Thomas Patrick Kiley | Registered representative | Apr 2024 (2y) | ||
| Micah Welton | Registered representative | May 2024 (2y) | ||
| Giancarlo Conti | Registered representative | CFA | May 2024 (2y) | |
| George Taylor | Registered representative | Oct 2024 (2y) | ||
| Christopher Mcfaddin Clegg | Registered representative | Dec 2024 (2y) | ||
| Harrison Bogusz | Registered representative | Dec 2024 (2y) | ||
| Michael Thomas Joyce | Registered representative | Dec 2024 (2y) | ||
| Matthew Hurd | Registered representative | Mar 2025 (1y) | ||
| Jeffrey I Blum | Registered representative | Mar 2025 (1y) | ||
| Gregory Alan Jones | Registered representative | Mar 2025 (1y) | ||
| Paul Bogdan Ticu | Registered representative | May 2025 (1y) | ||
| Jax Wardwell | Registered representative | Aug 2025 (1y) | ||
| Brent Pressentin | Registered representative | Oct 2025 (1y) | ||
| Grant A Einhorn | Registered representative | Oct 2025 (1y) | ||
| Joshua Govek | Registered representative | Dec 2025 (1y) | ||
| Patrick Coffey | Registered representative | Dec 2025 (1y) | ||
| Remi Peyrot | Registered representative | Mar 2026 (0y) | ||
| Taylor Renee Cowdrey | Registered representative | Mar 2026 (0y) |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Calamos Partners Llc | Member | Jul 2016 | B | 75% or more of Calamos Investments Llc (indirect) |
| Calamos Family Partners, Inc. | Member | Sep 2014 | B | 75% or more of Calamos Partners Llc (indirect) |
| Calamos Asset Management, Inc. | Sole Manager/Member | Oct 2004 | B | GP / trustee / elected manager of Calamos Investments Llc (indirect) |
Undisclosed: 90% – 100% of the firm is not attributable from the filed Schedule A bands.
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Private funds (2, $156M gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Calamos Global Opportunities Fund Lp | Other Private Fund | $153M | $5.0M | 9 |
| Calamos Ares Quant Fund I, Lp | Other Private Fund | $3.0M | $5.0M | 2 |
From Form ADV Section 7.B private fund reporting.
Retirement plans served (2)
| Plan | Sponsor | Participants | Plan assets | As of |
|---|---|---|---|---|
| Fulton Financial Affiliates Defined Benefit Pension Plan | Fulton Financial Corporation | 76 | $85.6M | 01/01/2024 |
| Laborers District Council Of W Pa Pension Fund | Laborers District Council Of W Pa Pension Fund Board Of Trustees | 6,572 | $948M | 01/01/2024 |
From Form 5500 service-provider disclosures.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 04/30/2026 | 2.1 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
Services
- • Portfolio management for individuals/small businesses
- • Portfolio management for investment companies
- • Portfolio management for pooled investment vehicles
- • Portfolio management for businesses/institutional clients
Custody
Reported custodians
- National Financial Services (Fidelity) $1.8B (4% of AUM) Apr 2026
- U.S. Bank $771M (2% of AUM) Apr 2026
- Fidelity Brokerage Services $439M (2% of AUM) Jun 2019
- U.S. Bancorp Investments, Inc. $409M (2% of AUM) Jun 2019
- BNY Mellon $303M (1% of AUM) Aug 2023
- Morgan Stanley $195M (1% of AUM) Jun 2020
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports having custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Jul 23, 2026.
View current Form ADV (SEC/IAPD) ↗