# Calamos Investments

Calamos Investments is a Multi Family Office based in Naperville, United States.

## Overview

- **Organization type:** Multi Family Office
- **Headquarters:** Naperville, United States
- **Region:** North America
- **Address:** 2020 Calamos Court, Naperville, Illinois, United States
- **Founded:** 2007
- **Assets under management:** 48400 (Altss estimate)
- **Website:** www.calamos.com
- **LinkedIn:** https://www.linkedin.com/company/calamos-investments

## Regulatory record

- **Reports private funds:** No

## About

Calamos Wealth Management operates as the wealth management arm of Calamos Investments. The firm is based in Naperville, Illinois. It offers alternative mutual fund vehicles and traditional strategies to institutions and individuals through a risk-managed approach to investing.

## Sectors

- Private Equity
- Hedge Funds
- Private Credit
- Digital Assets
- FinTech

## People

- John P. Calamos Sr. — Founder, Chairman, and Global Chief Investment Officer
- John Koudounis — President and CEO

## Questions

### Who runs investment decisions at Calamos Investments?

John P. Calamos Sr. serves as Chairman and Global Chief Investment Officer. John Koudounis holds the role of President and CEO. Investment committees integrate research across public and private strategies.

### Does Calamos Investments participate in fund commitments or only direct deals?

The firm executes both fund commitments and direct co-investments. It has taken co-investor roles in venture rounds and buyouts since 2007. Interval funds provide additional access to private equity exposure.

### What investment stages does Calamos Investments typically target?

The firm targets buyout, growth equity, and venture capital stages. It has participated in early-stage rounds and later acquisitions. Holdings span public equities and private vehicles.

### How is Calamos Investments related to its parent or related vehicles?

Calamos Wealth Management operates as the multi-family office division of Calamos Investments. The structure maintains separation between listed funds and private client mandates. A 50 percent joint venture exists with Giannis Antetokounmpo.

### Does Calamos Investments maintain philanthropic structures?

The John P. Calamos Sr. Foundation was established in 2006. It focuses on education and Hellenic heritage with an estimated $1.6 million in annual giving. A $10 million commitment to Illinois Institute of Technology has been recorded.

### What is Calamos Investments known posture on co-investments alongside external GPs?

The firm acts as co-investor in venture, growth, and buyout transactions. Examples include participation in Unnax Series A and multiple acquisitions between 2015 and 2024. Co-investments sit alongside fund commitments.

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Last updated: 2026-08-10T15:54:10.904Z

Canonical page: https://altss.com/profile/calamos-investments

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