CBOX

Calamos Tax-Aware Collateral ETF

Fund Stats

  • Bond Equivalent Yield

    4.05%

    As of 5/11/26

  • NAV

    $100.25

    $0.03 (0.03%)

    As of 5/15/26

  • Market Price

    $100.33

    As of 5/15/26

  • Total Net Assets

    $877.2 Million

    As of 5/15/26

  • Inception Date

    4/17/26

Calamos Tax-Aware Collateral ETF Overview

Calamos Tax-Aware Collateral ETF seeks to deliver stable growth by investing in FLEX options box spreads, principally on the SPDR S&P 500 ETF (SPY) to achieve tax-efficient cash management.

Key Features

  • Treasury Bill Alternative. Treasury bills are not the only option for short-term cash management.
  • Tax-Efficient Structure. Potential tax-efficient alternative to ultra-short duration bond exposure.
  • Outperformance Potential. Potential to generate returns above Treasury bills with limited incremental risk.
  • Institutional Investor Tested. A long-standing tool used by institutional investors to borrow and lend synthetic cash.

Portfolio Fit

Cash Management Alternative & Treasury Overlay. Seeks yields above risk-free rates in a tax-efficient structure.

Collateral Optimization. High-quality collateral without tying up capital.

Duration-Neutral Return Sleeve. Return engine without rate or equity beta.

Portfolio

A list of all fund holdings is made available daily through the link below.

View All Holdings

Holdings

As of 5/14/26
Holding %
Box Spread Flex Options Position - SPY Long Put 92.0%
Box Spread Flex Options Position - SPY Long Call 7.5%

Holdings and weightings are subject to change daily. Holdings are provided for informational purposes only and should not be deemed as a recommendation to buy or sell the securities mentioned.

Distributions

Schedule

Name Frequency
Distributions ANNUAL
Capital Gains ANNUAL

Pricing

Fund Details

As of 5/15/26
Detail Value
Ticker CBOX
NAV $100.25
Market Price $100.33
Premium/Discount 0.07%
Exchange Cboe BZX Exchange, Inc.
Inception Date 4/17/26

30 Day Median Bid/Ask

As of 5/14/26
30 Day Median Bid/Ask
0.06%

Premium / Discount

As of 5/15/26
Date Value
04/17/2026 0.01
04/20/2026 -0.01
04/21/2026 0.01
04/22/2026 0.02
04/23/2026 0.01
04/24/2026 0.02
04/27/2026 0.01
04/28/2026 0.01
04/29/2026 0
04/30/2026 0.02
05/01/2026 0.02
05/04/2026 0.01
05/05/2026 0.02
05/06/2026 0.02
05/07/2026 0.02
05/08/2026 0.03
05/11/2026 0.01
05/12/2026 -0.08
05/13/2026 0.01
05/14/2026 0.07
05/15/2026 0.07

Premium and Discount

As of 5/14/26
Q1 2026 Q2 2026 Q3 2026 Q4 2026
Days Traded at Premium 0 19 -- --
Days Traded at Discount 0 1 -- --

The above chart presents information about the difference between the daily market price for shares of the ETF and the ETF's net asset value. The market price displayed is the official closing price reported by the exchange​. The vertical axis of the chart shows the premium or discount expressed in basis points (bps). If the fund's market price exceeds its NAV, it is trading at a premium and is expressed by a positive value. If the fund's market price is below the NAV, the ETF is trading at a discount and is represented by a negative value. This value is recorded daily over the time period displayed along the horizontal axis.

Fees & Expenses

Fees & Expenses

Expense %
Management Fees 0.19%
Distribution and/or Service Fees (12b-1) 0.00%
Other Expenses1 0.00%
Total Annual Fund Operating Expenses 0.19%
Expense Reimbursement2 0.05%
Net Annual Fund Operating Expenses 0.14%

Fund Information

Name Fund
Inception Date 4/17/26
Ticker Symbol CBOX
CUSIP number 12811T514

Expenses and Fees as of the prospectus dated 4/13/26.

1"Other Expenses" is an estimate based on the expenses the Fund expects to incur for the current fiscal year.

2Calamos Advisors has entered into expense limitation agreement with the Trust pursuant to which Calamos Advisors has agreed to reimburse the Fund 0.05% of the average net assets of the Fund such that the unitary fee is reduced from 0.19% to 0.14%. The agreement extends to December 1, 2029.

Literature

About the Fund

Calamos Tax-Aware Collateral ETF Fact Sheet

The Calamos Tax-Aware Collateral ETF fact sheet provides a snapshot of the investment team and product strategy.

Prospectus and Reports

Summary Prospectus

This summary contains important information about the investment objective, fees and expenses, principal investment strategies, principal risks and performance.

Statutory Prospectus

You should read the accompanying prospectus and any accompanying prospectus supplement, which contain important information, before deciding whether to invest in our securities.

SAI

The statement of additional information is a supplementary document to the fund’s prospectus and contains additional information about the fund and includes further disclosure regarding its operations.

Calamos Financial Services LLC, Distributor

Check the background of the firm and its investment professionals on FINRA's BrokerCheck.

Before investing, carefully consider the fund's investment objectives, risks, charges and expenses. Please see the prospectus and summary prospectus containing this and other information which can be obtained by calling 1-866-363-9219. Read it carefully before investing.

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