CBOX

Calamos Tax-Aware Collateral ETF

Important Disclosure

Fund Stats

  • Bond Equivalent Yield

    3.91%

    As of 8/14/26

  • NAV

    $101.34

    $0.01 (0.01%)

    As of 8/19/26

  • Market Price

    $101.41

    As of 8/19/26

  • Total Net Assets

    $1.5 Billion

    As of 8/19/26

  • 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.

Performance

Annualized Total Returns (%)

As of 6/30/26

As of 7/31/26

Name 1 Month
CBOX Market Price 0.32
CBOX NAV 0.27
Bloomberg Short Treasury 1-3 Month Index 0.30
Name 1 Month Since Inception (04/17/26)
CBOX Market Price 0.35 1.15
CBOX NAV 0.47 1.14
Bloomberg Short Treasury 1-3 Month Index 0.33 1.06

Performance data quoted represents past performance, which is no guarantee of future results. Current performance may be lower or higher than the performance quoted. The principal value of an investment will fluctuate so that your shares, when sold, may be worth more or less than their original cost. Returns at NAV reflect the deduction of the Fund's management fee and other expenses, which can be found on the fund fees and expenses tab. You can purchase or sell common shares daily. Like any other stock, market price will fluctuate with the market. Upon sale, your shares may have a market price that is above or below net asset value and may be worth more or less than your original investment.

Unmanaged index returns, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

Average annual total return measures net investment income and capital gain or loss from portfolio investments as an annualized average. All performance shown assumes reinvestment of dividends and capital gains distributions.

The fund's expense ratio as of the prospectus dated 4/17/2026 is 0.19%.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

Portfolio

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

View All Holdings

Holdings

As of 8/19/26

Holding %
Box Spread Flex Options Position - SPY Long Put 92.1%
Box Spread Flex Options Position - SPY Long Call 7.7%

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 8/19/26

Detail Value
Ticker CBOX
NAV $101.34
Market Price $101.41
Premium/Discount 0.07%
Exchange Cboe BZX Exchange, Inc.
Inception Date 4/17/26

30 Day Median Bid/Ask

As of 8/19/26

30 Day Median Bid/Ask
0.07%

Premium / Discount

As of 8/19/26

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
05/18/2026 0.02
05/19/2026 0.04
05/20/2026 0.04
05/21/2026 0.02
05/22/2026 0.05
05/26/2026 0.01
05/27/2026 0
05/28/2026 0.06
05/29/2026 0.08
06/01/2026 0.08
06/02/2026 3.08
06/03/2026 0.07
06/04/2026 0.09
06/05/2026 0.07
06/08/2026 0.06
06/09/2026 0.03
06/10/2026 0.11
06/11/2026 0.03
06/12/2026 0.07
06/15/2026 0.03
06/16/2026 0.1
06/17/2026 0.07
06/18/2026 0.1
06/22/2026 0.05
06/23/2026 0.08
06/24/2026 0.07
06/25/2026 0.1
06/26/2026 0.1
06/29/2026 0.07
06/30/2026 0.13
07/01/2026 0.03
07/02/2026 0.02
07/06/2026 0.05
07/07/2026 0.05
07/08/2026 0.13
07/09/2026 0.06
07/10/2026 0.05
07/13/2026 0.05
07/14/2026 0.04
07/15/2026 0.06
07/16/2026 0.08
07/17/2026 0.05
07/20/2026 0.07
07/21/2026 0.07
07/22/2026 0.09
07/23/2026 0.02
07/24/2026 0.06
07/27/2026 0.01
07/28/2026 0.02
07/29/2026 0.01
07/30/2026 0.04
07/31/2026 0.01
08/03/2026 0
08/04/2026 0.07
08/05/2026 0.08
08/06/2026 -0.03
08/07/2026 0.02
08/10/2026 0.05
08/11/2026 0.09
08/12/2026 0.01
08/13/2026 0.06
08/14/2026 0.06
08/17/2026 0.06
08/18/2026 0.1
08/19/2026 0.07

Premium and Discount

As of 8/19/26

Q1 2026 Q2 2026 Q3 2026 Q4 2026
Days Traded at Premium -- 49 33 --
Days Traded at Discount -- 2 2 --

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.

©2026 Calamos Investments LLC. All Rights Reserved. Calamos®, Calamos Investments® and Investment strategies for your serious money® are registered trademarks of Calamos Investments LLC.

Calamos Investments LLC, referred to herein as Calamos Investments®, is a financial services company offering such services through its subsidiaries: Calamos Advisors LLC, Calamos Wealth Management LLC, Calamos Financial Services LLC and Calamos Antetokounmpo Asset Management LLC.

The personal data collected by Calamos on this website, or by any other means, is collected and stored in accordance with the General Data Protection Regulation (EU) 2016/679 ("GDPR").

Important Legal Information | Privacy Policy | Business Continuity | Code of Business Conduct and Ethics | ERISA 408(b)(2)

Important Fund Information

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.

An investment in the Fund is subject to risks, and you could lose money on your investment in the Fund. There can be no assurance that the Fund will achieve its investment objective. Your investment in the Fund is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. The risks associated with an investment in the Fund can increase during times of significant market volatility. The Fund also has specific principal risks, which are described below. More detailed information regarding these risks can be found in the Fund's prospectus.

The principal risks of investing in the Calamos Tax-Aware Collateral ETF include: authorized participant concentration risk, box spread risk, cash holdings risk, clearing member default risk, correlation risk, costs of buying and selling fund shares, credit risk, derivatives risk, equity securities risk, FLEX Options risk, interest rate risk, liquidity risk, market maker risk, market risk, new fund risk, non-diversification risk, options risk, premium-discount risk, secondary market trading risk, sector risk, tax risk, trading issues risk, underlying ETF risk, and valuation risk.

Box Spread Risk: If one or more of the individual option positions that comprise a Box Spread are modified or closed separately prior to the option contract's expiration, then the Box Spread may no longer effectively eliminate risk tied to underlying reference asset's price movement. Furthermore, the Box Spread's value is derived in the market and is in part based on the time until the options comprising the Box Spread expire and the prevailing market interest rates. The Fund's ability to utilize Box Spreads effectively is dependent on the availability and willingness of other market participants to sell the FLEX option contracts that comprise the Box Spreads to the Fund at competitive prices. If the Box Spread does not perform as intended, the Fund could have exposure to the underlying reference asset of the options comprising the Box Spread, which is expected to be the SPY. In such a scenario, the Fund would be subject to the risks of equity securities markets. Equity securities prices fluctuate for several reasons, including changes in investors' perceptions of the financial condition of an issuer or the general condition of the relevant equity market, such as market volatility, or when political or economic events affecting an issuer occur.

The S&P 500 Price Index (SPX) tracks the price return of the S&P 500 Index, which is generally considered representative of the US stock market.

Notes

Bond Equivalent Yield (BEY) is the annualized yield of the Fund's box spread option positions, calculated on a simple interest basis using the number of days to expiration and scaled to a 365-day year, before fees, expenses, or commissions. The fund-level BEY represents the weighted average of all individual position BEYs, weighted by market value, and is updated daily as positions mature and new positions are initiated.

30-day SEC yield reflects the dividends and interest earned by the Fund during the 30-day period ended as of the date stated above after deducting the Fund's expenses for that same period.

Distribution yield is calculated by annualizing the Fund's most recent distribution paid and dividing by the Fund's NAV as of the date of the period presented. Distributions may include interest and/or dividend income that represents the income accrued by the Fund during the period and are not guaranteed. Distribution Yield is based on distributions made in the past and therefore may not be reflective of the Fund's current portfolio.

Market price refers to the price at which shares of the fund trade in the market.

NAV or Net asset value refers to the net value of all the assets held in the fund on a per share basis.

CUSIP identifiers have been provided by CUSIP Global Services, managed on behalf of the American Bankers Association by S&P Global Market Intelligence LLC, and are not for use or dissemination in a manner that would serve as a substitute for any CUSIP service. The CUSIP Database, © 2011 American Bankers Association. "CUSIP" is a registered trademark of the American Bankers Association.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE