Calamos Bitcoin 90 Series Structured Alt Protection ETF - October

C000256944 Fund Overview

Calamos Bitcoin 90 Series Structured Alt Protection ETF - October is a US ETF managed by Calamos ETF Trust, categorised as Alternative. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.

• Type: US ETF
• Manager: Calamos ETF Trust
• Category: Alternative
• Assets under management: $9.96M
• SEC CIK: 0001579881
• SEC series ID: S000090067
• Share class ID: C000256944

C000256944 Investment Objective and Strategy

Calamos Bitcoin 90 Series Structured Alt Protection ETF - October describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Calamos ETF Trust.

Investment objective

"Calamos Bitcoin 90 Series Structured Alt Protection ETF ? October (the ""Fund"") seeks to provide investment results that, before taking total fund operating fees and expenses into account, track the positive price return of the CME CF Bitcoin Reference Rate New York Variant (""BRRNY"") (""Spot bitcoin""). As described below, the Fund seeks to achieve its investment objective through investments in over-the-counter Options (""OTC Options"") and/or, if and when available, FLexible EXchange Options (""FLEX Options"") and/or listed exchange traded options (""Listed Options""). The FLEX Options and/or Listed Options will each reference the price performance of (A) one or more of the iShares Bitcoin Trust ETF (""IBIT""), Grayscale Bitcoin Mini Trust (""BTC""), Bitwise Bitcoin ETF (""BITB""), Fidelity ?

Wise Origin ? Bitcoin Fund (""FBTC"") and ARK 21 Shares Bitcoin ETF (""ARKB"") (each, an ""Underlying ETP"" and collectively, the ""Underlying ETPs"") which, in turn, own bitcoin that is held by a bitcoin custodian in each instance on behalf of the respective Underlying ETPs and/or (B) one or more indexes that are designed to track the price of bitcoin (""Bitcoin Index"") up to a cap of 23.43% (the ""Cap""), while seeking to provide a Floor with protection against a loss exceeding 10% of the negative price return of Spot bitcoin (before total fund operating fees and expenses) over the Outcome Period for the period from October 7, 2025 through October 6, 2026."

Principal investment strategy

Each Funds prospectus contains one or more instances of a section titled Subsequent Outcome Periods. Each such section is hereby deleted in its entirety and replaced with the following: Approximately one week prior to the end of each Outcome Period, the Fund will file a prospectus supplement that will alert existing shareholders that the Outcome Period is approaching its conclusion and disclose the anticipated Cap range for the next Outcome Period. This filing will be mailed to existing shareholders. Following the close of business on the last day of the Outcome Period, the Fund will file a prospectus supplement that discloses the Funds Cap for the next Outcome Period. This filing will be mailed to existing shareholders. There is no guarantee the Cap will be within the anticipated Cap range.

The information referenced above will also be available on the Funds website at www.calamos.com . Please retain this supplement for future reference

C000256944 Holdings

Top 2 holdings of Calamos Bitcoin 90 Series Structured Alt Protection ETF - October by percentage of net assets, from the fund's latest SEC N-PORT filing.

View all C000256944 holdings

C000256944 Portfolio Allocation

Asset-class allocation of Calamos Bitcoin 90 Series Structured Alt Protection ETF - October by percentage of net assets, from the latest SEC N-PORT filing.

C000256944 Performance

Total returns for C000256944 (as of 2026-10-01), from SEC filings.

C000256944 Costs and Fees

C000256944 costs about $69 per $10,000 invested per year in fund expenses.

• Net expense ratio: 0.69%
• Gross expense ratio: 0.69%

C000256944 Cashflows

Over the 12 months to 2026-04, Calamos Bitcoin 90 Series Structured Alt Protection ETF - October had net inflows of $10.82M, from monthly SEC N-PORT filings.

C000256944 Debt Constituents

No individual debt constituents are reported in Calamos Bitcoin 90 Series Structured Alt Protection ETF - October's latest SEC N-PORT filing.

C000256944 Prospectus and SEC Filings

Official Calamos Bitcoin 90 Series Structured Alt Protection ETF - October filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.

• Prospectus (485BPOS) — filed 2025-11-26
• Prospectus (485BPOS) — filed 2025-01-31
• Prospectus supplement (497) — filed 2025-10-07
• Portfolio holdings (N-PORT) — filed 2026-09-29
• Portfolio holdings (N-PORT) — filed 2026-06-26
• Portfolio holdings (N-PORT) — filed 2026-03-31

Related Funds

Other Alternative funds tracked on ABC INVEST:

• iShares 0-3 Month Treasury Bond ETF (SGOV)
• Vanguard Short-Term Inflation-Protected Securities Index Fund (VTAPX)
• SPDR® Bloomberg Barclays 1-3 Month T-Bill ETF (BIL)
• Vanguard Inflation-Protected Securities Fund (VIPSX)
• iShares 0-1 Year Treasury Bond ETF (SHV)

Data Sources

ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.