Unclaimed Profile

John Harry Sianis

CALAMOS ANTETOKOUNMPO ASSET MANAGEMENT LLC·NAPERVILLE, Illinois

Series 3, Series 6513 years registeredCALAMOS ANTETOKOUNMPO ASSET MANAGEMENT LLC

2020 CALAMOS COURT, NAPERVILLE, IL 60563CRD# 4634195Firm CRD# 322813

Profile Verification

Sourced · FINRA · SEC · CFP Board · Self-disclosed

Identity

John Harry Sianis · NAPERVILLE, IL

Registration

CRD #4634195 · CALAMOS ANTETOKOUNMPO ASSET MANAGEMENT LLC · 13 years registered

Brand Profile

Not yet started

Career History

CALAMOS ADVISORS LLC

Jul 2019 – present

CALAMOS WEALTH MANAGEMENT LLC

Jan 2013 – present

Registrations & Exams

FINRA examinations passed

Series 3

Series 65

Registration record

First registered · January 1, 2013

Years registered · 13

Disclosure History

2013Judgment / Lien

1 disclosure event on file · Verify on FINRA BrokerCheck →

Source: SEC IAPD, as of 14 August 2026. Resolutions may have changed since.

Firm Overview

Firm

CALAMOS ANTETOKOUNMPO ASSET MANAGEMENT LLC

CRD 322813 · SEC 801-126711

AUM

$16M

Regulatory assets under management

Employees

3 client accounts

Services offered by CALAMOS ANTETOKOUNMPO ASSET MANAGEMENT LLC

Per Form ADV

Portfolio management (pooled investments)

Client types served by the firm

Per Form ADV

Institutional Investors

View all advisors at CALAMOS ANTETOKOUNMPO ASSET MANAGEMENT LLC →

Introduction

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Frequently Asked Questions

What services does John Harry Sianis offer?

John Harry Sianis specializes in Investment Management, Fee-Only Advisory. Contact their office in NAPERVILLE, Illinois for a consultation.

What are John Harry Sianis's credentials?

John Harry Sianis is a registered investment adviser representative. Check their firm's Form ADV filing for detailed qualification information.

Where is John Harry Sianis located?

John Harry Sianis is based in NAPERVILLE, Illinois, working with CALAMOS ANTETOKOUNMPO ASSET MANAGEMENT LLC. Their office serves clients in the NAPERVILLE metropolitan area and surrounding communities.

How does John Harry Sianis charge for services?

John Harry Sianis's firm is compensated through percentage of aum. Always review the firm's Form ADV Part 2 for complete fee details before engaging an advisor.

How large is CALAMOS ANTETOKOUNMPO ASSET MANAGEMENT LLC?

CALAMOS ANTETOKOUNMPO ASSET MANAGEMENT LLC has approximately 16 employees and manages $16M in regulatory assets under management. The firm is registered with the SEC as an investment adviser.

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