Calamos Investments

What Calamos Investments does

Calamos Investments is a privately held global investment management firm founded in 1977 by John P. Calamos Sr. and headquartered in Naperville, Illinois, managing approximately $47.2 billion in assets under management as of March 2026 and having crossed the $50 billion milestone during CEO John Koudounis' 10-year tenure. The firm operates a multi-channel distribution platform spanning mutual funds (140+ share classes), 50+ ETFs, seven NASDAQ-listed closed-end funds, three interval funds (Calamos Aksia platform), UCITS funds, and institutional separately managed accounts, serving institutional investors, registered investment advisors, high-net-worth clients via its Calamos Wealth Management subsidiary, and retail investors through major brokerage platforms (Schwab, Fidelity, Vanguard, Robinhood, SoFi, and others).

Calamos' core investment capabilities center on convertible securities — its founding competency since 1977 — combined with hedged equity, alternatives (market neutral, merger arbitrage, SPAC arbitrage, long/short via the Phineus team), and structured products. Its proprietary laddered autocallable ETF structure, launched in 2025 with CAIE and extended through CAIQ, CAGE, and a UCITS-listed version in April 2026, distributes exposure across portfolios of over 52 autocallable notes via swap agreements with JPMorgan as primary counterparty and MerQube indexes, democratizing access to a product category historically reserved for institutional and HNW clients. The firm also operates a structured-protection ETF franchise (S&P 500, Nasdaq-100, Russell 2000, and Bitcoin variants with 80-100% downside buffers using FLEX options) and a private credit interval fund (CAPIX, $1.19B AUM) co-developed with Aksia.

The firm earns recurring asset-based management fees across this product shelf — ETF expense ratios averaging 0.74-0.88% for autocallable products, mutual fund net expense ratios of 0.90-1.35% for institutional share classes, a 1.25% management fee on CAPIX with no performance fee, and negotiated separately managed account fees on a $5M institutional minimum. Go-to-market combines a dedicated institutional sales team, direct HNW advisory via Calamos Wealth Management, third-party brokerage platform distribution, EMEA/LatAm regional coverage, and event-driven thought leadership (CEO participation at the World Economic Forum and Greenwich Economic Forum).

Name

Calamos Investments

Legal name

Calamos Investments LLC

Website

https://calamos.com

Company type

Private

Founded year

1977

Operating status

Operating

Headcount range

251–500 employees

Short description

Calamos Investments is a privately held global asset manager founded in 1977, managing $47.2B+ in AUM across mutual funds, ETFs, closed-end funds, interval funds, and UCITS products, specializing in convertible securities, structured protection, autocallable strategies, alternatives, and private credit for institutional, RIA, HNW, and retail investors.

Ownership category

akta.pro rank

Product category

Asset Management

NAICS

Portfolio Management and Investment Advice (52394), Portfolio Management and Investment Advice (523940)

SIC

Investment Advice (6282)

akta.pro primary industry

OCIO Providers (Outsourced CIO) (FSAAAGAH)

akta.pro secondary industry

Fund of Funds & Multi-Manager Mutual Funds (FSAAAEAL)

Keywords

• Asset management services
• Convertible securities strategies
• Exchange traded funds
• Wealth management services
• Institutional separate accounts

Headquarters

HQ city

Naperville

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Mutual Fund Management Fees: Calamos earns investment advisory fees from its family of mutual funds across multiple share classes (A, C, I, R6). Fee structures vary by fund: equity funds typically charge 1.03%-1.28% gross for A shares; fixed income and alternative funds have different fee schedules. Class I shares (available to institutional investors with $1M+ minimum) carry lower fees than retail share classes. Class R6 shares carry the lowest expense ratios.
2. ETF Management Fees: Calamos earns ongoing management fees from its ETF suite. Structured protection ETFs charge approximately 0.74% for autocallable income ETFs (CAIE, CAIQ). Autocallable income ETFs average 0.88% expense ratios across the category. Protected Bitcoin ETFs and other structured products carry their own fee schedules. UCITS autocallable ETF carries fees for international distribution.
3. Closed-End Fund Management: Calamos manages seven closed-end funds (CHI, CHY, CSQ, CGO, CHW, CCD, CPZ) listed on NASDAQ, earning advisory fees. These funds trade at premiums or discounts to NAV and employ leverage to enhance income distributions. Distribution rates vary: CHY offers 9.35% yield; CSQ offers 7.11% yield; CHW offers 7.41% yield; CCD offers 9.39% yield. Some funds have maintained consecutive dividend payments for 20-24 years.
4. Interval Fund / Private Markets Fees: Calamos Aksia Alternative Credit and Income Fund (CAPIX) is an interval fund providing access to private credit with a 1.25% management fee, quarterly repurchases, and no performance fee. The private credit portfolio targets 10.2% yield with 176 underlying loans across 91 sourcing partners. Aksia provides private markets research and due diligence.
5. Institutional Separate Account Management: Calamos offers separately managed accounts to institutional clients with minimums of $5 million for strategies like Timpani Small Cap Growth ($802.8M strategy assets). Fees are negotiated based on strategy and asset size, typically charged on assets under management.
6. Wealth Management Services: Calamos Wealth Management (CWM), a subsidiary, provides investment management and advisory services to high-net-worth individuals and families, managing assets exceeding $5 billion in 2025. Services include portfolio construction, philanthropy planning, and comprehensive wealth management.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels7 records

Core offering

Calamos Investments is a global investment management firm that manages $47.2 billion in assets under management across mutual funds, closed-end funds, exchange-traded funds (ETFs), interval funds, and institutional separate account strategies. The firm specializes in convertible securities, alternatives, structured products (autocallable and structured protection ETFs), traditional equity and fixed income, and private markets through its Calamos Aksia partnership. It serves institutional investors, financial advisors, high-net-worth individuals (via Calamos Wealth Management), and retail investors through major brokerage platforms and UCITS structures internationally.

Product overview

Calamos Investments is a global investment management firm offering a comprehensive platform of investment products spanning mutual funds, closed-end funds, exchange-traded funds (ETFs), interval funds, and institutional separate account strategies. The firm specializes in convertibles, alternatives, structured products, and traditional equity/fixed income strategies. Key product families include: (1) Autocallable ETFs (CAIE, CAGE, CAIQ) offering income and growth through laddered autocallable structures; (2) Structured Protection ETFs providing S&P 500, Nasdaq-100, Russell 2000, and Bitcoin exposure with downside protection; (3) Protected Bitcoin ETFs with 80-100% downside protection; (4) Private credit interval funds (CAPIX, CAPVX, HEDGX) through AC Private Markets partnership; (5) Alternative mutual funds including Market Neutral Income, Phineus Long/Short, Merger Arbitrage, and Hedged Equity strategies; (6) Equity funds spanning growth (CGRIX, CTSIX, CTIGX), convertibles (CICVX, CXGCX), international (CIGIX, CNWIX), and global (CGCIX, CIGEX); (7) Fixed income funds including Total Return Bond, Short Term Bond, and High Income Opportunities; (8) Seven closed-end funds (CSQ, CHY, CHI, CCD, CHW, CGO, CPZ); and (9) Institutional separate account strategies. The firm, founded in 1977 and headquartered in Naperville, Illinois, manages $47.2 billion in assets under management as of March 2026.

Differentiator

Problem solved

Functional benefit

Brands

• Calamos Wealth Management: Wealth management subsidiary offering personalized investment management services for high-net-worth clients
• Calamos Antetokounmpo
• Calamos Aksia / AC Private Markets
• Calamos Phineus
• Calamos Timpani

Products and services

• Calamos Autocallable Income ETF (CAIE) First autocallable income ETF providing high monthly income through a laddered portfolio of over 52 autocallable yield notes linked to the MerQube US Large-Cap Vol Advantage Index with -40% downside barrier levels. Designed for retail and advisor access to institutional-quality autocallable structures.
• Calamos Autocallable Growth ETF (CAGE) First ETF to deliver exposure to a portfolio of laddered autocallable growth notes targeting long-term capital appreciation. Uses JPMorgan as primary swap counterparty and MerQube for the underlying index; listed on NYSE.
• Calamos Nasdaq Autocallable Income ETF (CAIQ) First ETF offering an autocallable income strategy based on the Nasdaq-100 index, delivering high income through laddered autocallable structured products with barrier levels.
• Laddered Structured Protection ETFs (S&P 500 suite) Suite of structured protection ETFs providing S&P 500 exposure with downside protection through FLEX options and laddered structures with various cap rates and protection levels. Includes multiple monthly series (CPSL, CPSA, CPSM, CPSF, CPSJ, CPSO, CPSN, CPSU, CPSY, CPST, CPSR, CPNM, CPNQ, CPNJ, CPSD, CPSP).
• Protected Bitcoin ETFs Suite of Bitcoin structured protection ETFs (CBOA, CBOY, CBOO, CBTA, CBTJ, CBTY, CBXA, CBXJ, CBOL, CBXL, CBTL, CBXY) offering 80-100% downside protection with various cap rates, enabling risk-managed Bitcoin exposure through FLEX options and laddered structures.
• Russell 2000 Structured Alt Protection ETFs (CPRY, CPRJ, CPRA, CPRO) Structured protection ETFs providing Russell 2000 small-cap exposure with downside protection and cap on upside returns across multiple monthly series.
• Nasdaq-100 Structured Alt Protection ETFs (CPNJ, CPNQ, CPNM, CPSN) Structured protection ETFs providing Nasdaq-100 exposure with downside protection through laddered option strategies across multiple monthly series.
• Calamos Aksia Alternative Credit and Income Fund (CAPIX) Income-focused private credit interval fund providing access to diversified private credit opportunities across direct lending, specialty finance, real estate credit, and distressed assets. 176 underlying loans across 91 sourcing partners, targeting 10.2% yield with quarterly repurchases.
• Calamos Aksia Private Equity and Alternatives Fund (CAPVX) Private equity and alternatives interval fund offering access to diversified alternative investments through Aksia partnership.
• Calamos Aksia Hedged Strategies Fund (HEDGX) Hedged strategies interval fund providing exposure to various hedged alternative investment approaches through the Calamos Aksia partnership.
• Calamos Market Neutral Income Fund (CMNIX) Absolute return liquid alternative strategy employing hedged equity, convertible arbitrage, merger arbitrage, and SPAC arbitrage strategies for stable performance in volatile markets with low correlation to traditional equity and bond markets.
• Calamos Growth Fund (CGRIX) Broad US growth equity fund investing across all market capitalizations and sectors seeking long-term capital growth through high-conviction fundamentally researched stocks.
• Calamos Growth and Income Fund (CGIIX) Multi-asset fund combining equity exposure with convertibles and options overlays for growth and income generation with downside risk management; received 5-star overall Morningstar rating as of 5/31/26.
• Calamos Timpani Small Cap Growth Fund (CTSIX) Small-cap growth equity fund investing in small capitalization companies with high sustainable growth potential, focusing on underestimated growth differential. Returned 43.62% over 1 year (vs. Russell 2000 Growth 23.58%) and 14.57% annualized over 10 years.
• Calamos Timpani SMID Growth Fund (CTIGX) Small and mid-cap growth fund investing in companies with high sustainable growth potential using fundamental research and estimate revision analysis.
• Calamos Convertible Fund (CICVX) Fund investing primarily in convertible securities issued by US and foreign companies, aiming for current income with growth as secondary objective.
• Calamos Global Convertible Fund (CXGCX) Global convertible securities fund providing exposure to convertibles across US, Asia, and Europe with focus on technology and AI-related opportunities.
• Calamos Hedged Equity Fund (CIHEX) Hedged equity strategy with low beta designed to capture 60-65% of market upside while limiting downside to 35-40%.
• Calamos Phineus Long/Short Fund (CPLIX) Long/short equity fund focused on US industrial, defense, and energy infrastructure sectors with combined short exposure and option protection.
• Calamos Global Opportunities Fund (CGCIX) Global equity fund seeking strong risk-adjusted returns through security selection and sector overweighting, especially in technology; received 5-star overall Morningstar rating.
• Calamos International Growth Fund (CIGIX) International growth equity fund investing in developed and emerging markets outside the US for long-term capital appreciation.
• Calamos Total Return Bond Fund (CTRIX) Multi-sector fixed income strategy investing predominantly in US issuers for high current income and total return exceeding benchmark.
• Calamos High Income Opportunities Fund (CIHYX) High yield bond fund focusing on high income opportunities in the high yield credit market.
• Calamos Convertible and High Income Fund (CHY) Closed-end fund offering approximately 9.35% yield through 69% convertible bonds and 23% corporate bonds portfolio; has maintained consecutive dividend payments for 24 years.
• Calamos Convertible Opportunities and Income Fund (CHI) Closed-end fund investing in convertibles and high-yield securities for income and capital appreciation; 24 consecutive years of dividend payments.
• Calamos Strategic Total Return Fund (CSQ) Closed-end fund focused on total return through diversified portfolio of equity and debt securities; offers 7.11% yield with 20 consecutive years of dividend payments.
• Calamos Dynamic Convertible and Income Fund (CCD) Closed-end fund offering 9.39% yield through convertible securities and high-yield bonds with 43.9% technology weighting.
• Calamos Global Dynamic Income Fund (CHW) Global closed-end fund providing high current income and capital appreciation through diversified income-producing securities; offers 7.41% yield.
• Calamos Long/Short Equity & Dynamic Income Trust (CPZ) Closed-end fund combining long/short equity strategy with dynamic income generation.
• Calamos Global Total Return Fund (CGO) Global closed-end fund seeking total return through equity and debt securities with leverage around 33%.
• Calamos Wealth Management Comprehensive wealth management services for high-net-worth individuals and families, including portfolio construction, philanthropy planning, and financial planning. Manages over $5 billion in assets as of 2025; recognized by Forbes as one of America's Top 100 RIAs in 2025.
• Institutional Separate Account Strategies Customized investment strategies delivered via separately managed accounts to institutional clients with $5 million minimums. Includes Calamos US Convertible Strategy, Global Convertible Strategy, Timpani Small Cap Growth Strategy ($802.8M strategy assets), Timpani SMID Growth Strategy, Hedged Equity Strategy, Market Neutral Income Strategy, and High Income Opportunities Strategy.
• Calamos Autocallable Income UCITS ETF World's first autocallable UCITS ETF offering global investors access to a laddered portfolio of over 52 autocallables with single-ticker access through two share classes, delivering approximately 14% annualized weighted average coupon. Listed on Xetra (Germany), LSE, and SIX (Switzerland).
• UCITS Global Convertible Fund UCITS-compliant Global Convertible Fund available in multiple share classes (A, C, I, N, Z) and currencies (EUR, USD, GBP, CHF) for international investors.

Quantifiable outcome

• CAIE achieved 25.52% annualized total return since inception as of May 31, 2026, and attracted over $1 billion in AUM within its first year
• +5 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Northern TrustcoreTechnology or Integration · 27 April 2026Northern Trust announced support for the launch of the Calamos Autocallable Income UCITS sub-fund on Waystone's Irish-domiciled ETF ICAV platform. Northern Trust provides fund administration, transfer agency, and custodian services for the UCITS ETF, enabling Calamos' entry into European markets with listing on Xetra and London Stock Exchanges.
• WaystonecoreTechnology or Integration · 27 April 2026Waystone provides the ICAV (Irish Collective Asset-management Vehicle) platform for the Calamos Autocallable Income UCITS ETF, enabling the fund to be domiciled in Ireland and distributed to European, Asian, and Middle Eastern investors under the UCITS regulatory framework.
• J.P. MorgancoreTechnology or Integration · 15 April 2026J.P. Morgan serves as the primary swap counterparty for Calamos' autocallable ETF structures, including CAIE, CAGE, and the UCITS autocallable ETF. Swap agreements with JPMorgan provide the synthetic exposure to MerQube indexes underlying the autocallable products. This is a critical infrastructure partnership enabling Calamos to offer retail-accessible autocallable income and growth products.
• MerQubecoreTechnology or Integration · 15 April 2026MerQube provides the underlying indexes for Calamos' autocallable ETFs: the MerQube US Large-Cap Vol Advantage Index (for CAIE) and the MerQube Nasdaq-100 Vol Advantage Autocallable Index (for CAIQ and CAGE). These indexes track laddered portfolios of autocallable notes with defined barrier levels, enabling retail access to institutional-quality autocallable structures.
• Aksia LLCcoreStrategic or Co-development Partner · 8 June 2023Calamos partnered with Aksia LLC (a private markets research and consulting firm) to co-manage the Calamos Aksia Alternative Credit and Income Fund (CAPIX) and the Calamos Aksia Private Equity and Alternatives Fund. Aksia provides private credit investment research, due diligence on managers, and sourcing of private credit opportunities. Aksia's platform covers hundreds of private credit originators and PE sponsors, enabling Calamos to access a broad private credit opportunity set. Calamos Aksia funds had $1.19B in AUM for CAPIX as of mid-2026.
• U.S. Bancorp (Transfer Agent)minorOthersU.S. Bancorp serves as the transfer agent for Calamos Family of Funds, handling shareholder recordkeeping, transaction processing, and investor communications for mutual fund investors. Address: 801 Pennsylvania Ave., Suite 219252, Kansas City, MO 64105-1307.
• Chicago BullsminorGTM or Marketing PartnerCalamos Investments has an established multi-year partnership with the Chicago Bulls, extending to the newly launched Chicago Sports Network. This sponsorship/partnership provides brand visibility and community engagement in the Chicago market where Calamos is headquartered.

Scale indicators14 records

Recent moves12 records

Expansion highlights6 records

Direct peers

• Nuveen: Nuveen operates a comparable multi-product platform spanning mutual funds, closed-end funds, ETFs, and interval funds with strong institutional and wealth management distribution. Its income-oriented and multi-asset strategies directly overlap with Calamos's closed-end fund suite (CHI, CHY, CSQ) and structured product offerings.
• Eaton Vance: Eaton Vance (now part of Morgan Stanley Investment Management) historically operated a directly comparable product mix including mutual funds, closed-end funds, interval funds, and structured/option-overlay strategies. Its tax-managed and option-income funds closely parallel Calamos's hedged equity and structured protection ETF offerings.
• Virtus Investment Partners: Virtus is a multi-boutique asset manager offering mutual funds, ETFs, and closed-end funds with strong intermediary distribution. Its product breadth, sub-advisor model, and focus on actively managed equity, fixed income, and alternative strategies directly mirror Calamos's product structure and distribution channels.
• Cohen & Steers: Cohen & Steers is a specialty asset manager with a multi-product platform spanning mutual funds, closed-end funds, and interval funds, with strong institutional and wealth management presence. Its income-oriented strategies and use of structured/alternative approaches parallel Calamos's closed-end fund suite and alternative strategies.
• Innovator ETFs: Innovator pioneered defined-outcome ETFs with buffer and floor protection and is the closest direct competitor to Calamos's structured protection ETF suite (CPSL, CPSM, etc.) and autocallable ETFs (CAIE, CAGE). Both firms use FLEX options to engineer retail-accessible structured strategies.
• Simplify ETFs: Simplify is an emerging ETF issuer focused on option-based income and convexity strategies that directly competes with Calamos's structured protection and autocallable ETFs. Both firms target advisor channels with sophisticated option-overlay products.

Broad incumbents

• First Trust: First Trust is a large multi-product ETF and closed-end fund sponsor with significant structured product innovation (defined outcome, buffered, and laddered ETFs). Its broad portfolio of buffered/structured ETFs places it in direct competition with Calamos's structured protection and autocallable product families.
• abrdn (Aberdeen): abrdn is a global asset manager with comparable multi-channel distribution including mutual funds, closed-end funds, UCITS, and ETFs, with strong presence in convertibles and income strategies. Its Global Convertibles strategy directly competes with Calamos's CXGCX global convertible product.
• Allianz Global Investors: AllianzGI is a global investment manager with a comparable product mix spanning mutual funds, ETFs, UCITS, structured products, and convertibles across institutional and retail channels. Its structured US equity and convertible strategies directly overlap with Calamos's structured protection and convertible suites.
• Victory Capital: Victory Capital operates a multi-boutique active asset management platform with mutual funds, ETFs, and separately managed accounts. Its intermediary-focused distribution model and active equity/fixed income strategies overlap materially with Calamos's distribution and product approach.

Market position

Strengths1 record

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/calamos
• LinkedInlinkedin.com/company/calamos-investments
• Instagraminstagram.com/calamos_investments
• Facebookfacebook.com/calamos

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Calamos Investments