Calamos Tax-Aware Collateral ETF
CBOX
Chicago Board Options Exchange- -
USD
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- Sector
- Financial Services
- Industry
- Asset Management
- Address
- 2020 Calamos Court Naperville IL United States of America 60563
- IPO Date
- Apr 17, 2026
- CIK
- 0001579881
- Website
- calamos.com
- Similar Companies
- Business
- Calamos Tax-Aware Collateral ETF is an actively managed exchange-traded fund and a Calamos Investments product that seeks to deliver stable growth through FLEX options box spreads, principally on the SPDR S&P 500 ETF (SPY), to provide tax-efficient cash management and collateral optimization. The fund offers a Treasury bill alternative and a duration-neutral return sleeve designed to target yields above risk-free rates with limited incremental risk. Calamos Investments, founded in 1977 and headquartered in Naperville, Illinois, manages the ETF through its broader global investment platform, with offices in Chicago, New York, San Francisco, Milwaukee, Portland, and the Miami area. The fund’s core offerings include FLEX options box spreads; tax-efficient cash management solutions; collateral optimization; and exposure to a structured options-based strategy that uses synthetic long and short exchange-listed options positions, with portfolio exposure principally linked to SPY. As of 9/8/26, CBOX reported $1.5 billion in total net assets, a NAV of $101.58, a market price of $101.55, and a net annual fund operating expense ratio of 0.14% after reimbursement. Shares trade on Cboe BZX Exchange, Inc., and the fund pays distributions and capital gains annually. Recent developments include the ETF’s launch on 4/17/26 and its listing on Cboe BZX Exchange the same day, marking a major expansion of Calamos’ ETF platform into tax-aware collateral strategies. Since inception, the fund has reported ongoing asset growth and updated fund statistics, including a bond equivalent yield of 3.60% as of 8/28/26 and daily holdings disclosures showing substantial exposure to State Street SPDR S&P 500 ETF Trust. The product is positioned for institutional and sophisticated investors seeking short-duration cash-management alternatives within Calamos’ broader alternatives and ETF business.