CALAMOS ADVISORS LLC

CRD

105758

SEC file #

801-29688

EIN

000000000

DBA names

—

Economics

AUM

$43.89B

AUM band

$1B+

AUM trajectory

'20 · $20.74B

'21 · $25.24B

'22 · $31.14B

'23 · $41.99B

'25 · $38.18B

'26 · $43.89B

'20'26

$20.74B → $43.89B▲ +112%

sec adv history

Client mix

Individuals High Net Worth	1,372
Individuals Other	364
Investment Companies	74
Corporations	70
Pension Profit Sharing Plans	41

Operations

Employees (total)

300

Advisory staff (per ADV)

114

Advisory staff (5-yr trend)

'20 · 92 advisors

'21 · 108 advisors

'22 · 103 advisors

'23 · 110 advisors

'25 · 106 advisors

'26 · 114 advisors

'20'26

92 advisors → 114 advisors▲ +24%

sec adv history

Primary office

NAPERVILLE IL

Branches

—

Custodian & Brokerage

Primary custodian

Morgan Stanleylow confidence

adv brochure

Services offered

Portfolio mgmt — individualsPortfolio mgmt — investment companiesPortfolio mgmt — pooled vehiclesPortfolio mgmt — businesses

Fee basis

% of AUM

Filings

Latest ADV filing

04/30/2026

linkedin.com/company/calamos-investments(social)

ADV-W filed at

—

Website

Compliance

Disclosures (firm)

Trademark

—

Additional signalsExpand ▾

Ownership & succession ★

Who controls the firm + pre-computed succession flags

Top Owner Name

CALAMOS INVESTMENTS LLC

Top Owner Pct

87.5

Top Owner Entity Kind

Owner Count

Control Persons

CALAMOS INVESTMENTS LLC

CALAMOS SR., JOHN, PETER

Solo Advisor Indicator

Succession Risk Solo Owner

Is Parent Owned Subsidiary

Yes

Availability / M&A ★

Already-acquired = skip; deal comps

Adv W Filed

sec adv w

Web presence ★

Stale website = winding down

Web Signal Quality

fallback_guess:calamos.com

rdap

Retirement-plan book (Form 5500) ★

401(k)/plan business — cross-sell value

Retirement Plan Book

Form 5500 Plan Count

Form 5500 Total Compensation

30,808

Form 5500 Compensation Trajectory 3y

2025

30,808

Form 5500 Plan Count Trajectory 3y

2025

Schedule C Total Compensation

30,808

Schedule C Service Provider Rows

SEC EDGAR

Edgar Cik

0001403002

Edgar Registered

Yes

Edgar Filing Count

Edgar First Filing Date

2007-06-08

Edgar Last Filing Date

2026-02-10

Edgar Form D Count

Edgar Form D Offerings

2026-02-102026-02-10 · 0001403002-26-000001

2025-01-032025-01-03 · 0001403002-25-000001

Compliance & brand

Firm Registration Status

active

sec adv w

All other collected signals (11)

Everything else we've pulled for this record, not yet curated into a section.

Adv W Recently Filed

sec adv w

Bc Firm Active Bc Count

brokercheck firm search

Bc Firm Active IA Count

brokercheck firm search

Bc Firm IAR Count

brokercheck firm search

Custodian Candidates

Full

Morgan Stanley	7
Charles Schwab	6
State Street	6
E*trade	4
Bny Mellon	3

adv brochure

Edgar Addresses

Mailing

2020 Calamos CtNaperville, IL 60563

Business

2020 Calamos CtNaperville, IL 60563

Edgar EIN

000000000

Edgar Recent Filings

D/A2026-02-10 · 0001403002-26-000001

D/A2025-01-03 · 0001403002-25-000001

Firm Has Custody

Yes

Mailing Office Differs

Trust Company Affiliate

Yes

IAR · Executive Officer · 2.5%

People (46)

CALAMOS SR., JOHN, PETER

38210

Kiley, Thomas, Patrick

IAR · Executive Officer · 2.5%

2869770

Dufresne, Daniel, Leo

2852606

Herman, Thomas, Edward

4915058

KOUDOUNIS, JOHN, SPIRO

1878118

Ojala, Erik, Donald

4758365

Kelly, Walter, Morrissey