Calamos Advisors LLC
Calamos Advisors LLC, founded in 1977, is a diversified global investment firm headquartered in Naperville, IL, in the Chicago metropolitan area. It is a subsidiary of Calamos Investments and provides a broad array of investment strategies including convertible, liquid alternatives, sustainable equity, fixed income, and multi-asset solutions. The firm serves institutional investors, corporations, pension funds, endowments, foundations, and individuals through various vehicles like mutual funds, separately managed portfolios, private funds, and UCITS. Calamos employs over 300 professionals and has offices across major US cities, maintaining a reputation for innovation in risk-managed investing and thought leadership.
Investment Strategy
Calamos Advisors LLC follows an active, high-conviction approach driven by combining top-down macroeconomic insights with rigorous bottom-up fundamental research. Portfolios are built collaboratively by specialized teams focusing on their area of expertise, leveraging risk management and proprietary research. The firm's strategies encompass convertible securities, alternatives, multi-asset portfolios, and sustainability factors for select funds. The Calamos Investment Committee helps shape macro views, asset allocation, and sector positioning, maintaining excellence in both performance and client service.
Latest 13F Filing Activity
Calamos Advisors LLC filed their most recent 13F report on Sep 30, 2025 disclosing 591 equity positions and 43 options positions with a total 13F market value of $27B. The fund increased holdings in Nvidia Corporation, Apple Inc., Alphabet Inc. among other positions. Calamos Advisors LLC reduced exposure to Hess Corp., Juniper Networks Inc., Ansys Inc. among others.
Top Holdings
Equity Positions (591)
| Ticker | Security | Weight | Market Value | Shares | Avg Cost | Price | Change (QoQ) |
|---|---|---|---|---|---|---|---|
N NVDA | NVIDIA CORPORATION | 5.15% | $1.39B | 7,475,880 | $8.03 | $186.58 | +$197.7M |
M MSFT | MICROSOFT CORP | 4.20% | $1.14B | 2,197,239 | $119.54 | $517.95 | +$28.0M |
A AAPL | APPLE INC | 3.83% | $1.04B | 4,074,858 | $55.83 | $254.63 | +$193.2M |
A AMZN | AMAZON COM INC | 2.61% | $705.6M | 3,213,654 | $77.07 | $219.57 | -$14.6M |
G GOOGL | ALPHABET INC | 2.01% | $544.8M | 2,241,020 | $65.43 | $243.10 | +$129.0M |
Options Positions (10)
| Ticker | Security | Action | Type | Notional Value | Contracts | Underlying Price | Premium Paid | Change (Contracts) | Change (Value) |
|---|---|---|---|---|---|---|---|---|---|
S SPY | SPDR S&P 500 ETF TR | Sold | Put | $711.3M | 11,513 | $666.18 | $557.66 | -3,677 | -$138.4M |
Q QQQ | INVESCO QQQ TR | Bought | Put | $414.6M | 7,515 | $600.37 | $552.74 | +4,605 | +$278.1M |
S SPY | SPDR S&P 500 ETF TR | Sold | Call | $362.8M | 5,872 | $666.18 | $570.85 | -1,352 | -$41.3M |
I IWM | ISHARES TR | Sold | Call | $150.3M | 6,963 | $241.96 | $213.95 | -415 | +$3.1M |
I IWM | ISHARES TR | Sold | Put | $140.7M | 6,519 | $241.96 | $213.61 | -9 | +$10.4M |
Industry Allocation
Investment Team (45)
| Name | Role | Location | |
|---|---|---|---|
 | Vice President - Investment Consultant -RIA and BANKS | Denver, CO , United States | |
 | Equity Trader | Naperville, IL , United States | |
 | Portfolio Manager | Oak Park, IL , United States | |
D Doug Berman | Vice President - Senior Investment Consultant | Jupiter, FL , United States | |
 | Vice President, Investment Consultant | Philadelphia, PA , United States | |
 | Co-Chief Investment Officer, Senior Co-PM, Head of Alternatives and Co-Head of Convertibles | Chicago, IL , United States | |
G Glen Ingalls | SVP and Co-Portfolio Manager | Oakland, CA , United States | |
 | Research Associate | Chicago, IL , United States | |
 | Senior Vice President, Senior Co-Portfolio Manager | Naperville, IL , United States | |
J Joe Mariano | SVP, Head of Global Trading and ETF Capital Markets | Naperville, IL , United States |