Calamos Advisors LLC

Registered investment advisor · Naperville, Illinois · CRD #105758

Assets Under Management

$43.9B

Client Accounts

1,957

Employees

300

CRD Number

105758

Registration

SEC Registered

Custodian

National Financial Services Llc, U.s. Bank National Association

Source: SEC Form ADV filings. Data as of 2026-07-06.

About Calamos Advisors LLC

Calamos Investments is a global investment management firm based in Naperville, Illinois, founded in 1977 by John P. Calamos, Sr. The firm specializes in innovative, risk-managed strategies, particularly in convertible securities, to generate returns while controlling risk. It manages approximately $39.5–43.7 billion in assets and employs over 363 professionals across multiple offices, including locations in New York, San Francisco, Milwaukee, and the Miami area. Calamos offers a wide range of

Fee Structure

Percentage of assets under management Yes

Fixed fees Not reported

Hourly charges Yes

Performance-based fees Yes

Contacts, 13F holdings & brochure intel for Calamos Advisors LLC

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Frequently Asked Questions

What is Calamos Advisors LLC's AUM?

Calamos Advisors LLC reports approximately $43.9B in regulatory assets under management, based on its most recent SEC Form ADV filing.

Where is Calamos Advisors LLC headquartered?

Calamos Advisors LLC is headquartered in Naperville, Illinois.

What is Calamos Advisors LLC's CRD number?

Calamos Advisors LLC's CRD number is 105758. You can use it to look up the firm's full regulatory record on the SEC's Investment Adviser Public Disclosure site.