John Spiro Koudounis
President And Chief Executive OfficerCalamos Advisors LLCCRD 1878118
About John Spiro Koudounis
John Spiro Koudounis is listed as President And Chief Executive Officer at Calamos Advisors LLC in Naperville, IL. Form ADV reports a beneficial ownership band of Under 5%. John Spiro Koudounis is associated with 16 registered advisers.
Reported ownership
Owns Under 5% of Calamos Advisors LLC
Ownership band reported on Form ADV Schedule A
Frequently asked questions
Where does John Spiro Koudounis work?
John Spiro Koudounis is listed as President And Chief Executive Officer at Calamos Advisors LLC on SEC Form ADV.
How much of Calamos Advisors LLC does John Spiro Koudounis own?
Form ADV reports a beneficial ownership band of Under 5%.
Calamos Advisors LLC
| Title | President And Chief Executive Officer |
| Ownership | Under 5% |
| Control person | Yes |
| Since | 2016 |
Calamos Antetokounmpo Asset Management LLC
| Title | Director, Chairman And Chief Executive Officer |
| Ownership | Under 5% |
| Control person | Yes |
| Since | 2022 |
Calamos Private Equity LLC
| Title | President And Chief Executive Officer |
| Ownership | Under 5% |
| Control person | Yes |
| Since | 2022 |
Calamos Wealth Management LLC
| Title | President & Chief Executive Officer |
| Ownership | Under 5% |
| Control person | Yes |
| Since | 2016 |
Calamos Advisors LLC
| Title | Manager And Shareholder |
| Ownership | — |
| Control person | Yes |
| Since | 2016 |
Calamos Advisors LLC
| Title | Shareholder |
| Ownership | 25-50% |
| Control person | Yes |
| Since | 2020 |
Calamos Advisors LLC
| Title | Member |
| Ownership | Over 75% |
| Control person | Yes |
| Since | 2026 |
Calamos Antetokounmpo Asset Management LLC
| Title | Shareholder |
| Ownership | 25-50% |
| Control person | Yes |
| Since | 2020 |
Calamos Antetokounmpo Asset Management LLC
| Title | Manager And Shareholder |
| Ownership | — |
| Control person | Yes |
| Since | 2016 |
Calamos Antetokounmpo Asset Management LLC
| Title | Member |
| Ownership | Over 75% |
| Control person | Yes |
| Since | 2026 |
Calamos Private Equity LLC
| Title | Manager And Shareholder |
| Ownership | — |
| Control person | Yes |
| Since | 2016 |
Calamos Private Equity LLC
| Title | Shareholder |
| Ownership | 25-50% |
| Control person | Yes |
| Since | 2020 |
Calamos Private Equity LLC
| Title | Member |
| Ownership | Over 75% |
| Control person | Yes |
| Since | 2026 |
Calamos Wealth Management LLC
| Title | Manager And Shareholder |
| Ownership | — |
| Control person | Yes |
| Since | 2016 |
Calamos Wealth Management LLC
| Title | Shareholder |
| Ownership | 25-50% |
| Control person | Yes |
| Since | 2020 |
Calamos Wealth Management LLC
| Title | Member |
| Ownership | Over 75% |
| Control person | Yes |
| Since | 2026 |