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CBOO Calamos Bitcoin Structured Alt Protection ETF - October

Absorbs losses from 1.2% to 100.0% on Bitcoin and caps the gain at 7.3%, over a period ending Oct 7, 2026Calamos0.69% fee$6mFund page at the issuer ↗SEC filings ↗Every Calamos fund ETFIQ covers
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As of Oct 1, 2026, Bitcoin is down 30.8% and CBOO's protection has held the loss to 1.2%.

not published
Can still gain
0.0%
Fall before the buffer
69.2%
Protection left, index points
6
Days to reset
Buffer working
Buffer workingCBOO: reference −30.8% since period start, fund −0.8%; buffer −1 to floor; cap +7.3%; Buffer working.full floor beneath+7.3% to capfull floor−1.2% buffer start0% period start+7.3% capTODAY · Bitcoin −30.8%Buffer workingCBOO: reference −30.8% since period start, fund −0.8%; buffer −1 to floor; cap +7.3%; Buffer working.full floor beneathfull floor−1.2% buffer start0% start+7.3% capTODAY · Bitcoin −30.8%

CBOO: reference −30.8% since period start, fund −0.8%; buffer −1 to floor; cap +7.3%; Buffer working.

WindowTotal return
3M Jul 1 – Sep 30, 2026+0.7%
6M Apr 1 – Sep 30, 2026+1.2%

CBOO over each window to Oct 1, 2026. Every figure is an ETFIQ calculation. Source: ETFIQ.

Funds near this one
CBOACBOJCBOYCBTA

In plain words

6 days remained on Oct 1, 2026. On Oct 7, 2026 the period ends and a new cap is set.
Reference indexBitcoin
Buffer1% to 100%
Outcome periodOct 7, 2025 to Oct 7, 2026
Starting cap+7.3%
Bitcoin return since period start−30.8%
Fund return since period start−0.8%
Net assets (issuer page, as of Sep 30, 2026)$6m
Band state today (ETFIQ)Buffer working
Can still gain (issuer, fund price)not published
Fall before buffer (issuer, fund price)0.0%
Fall to the buffer in index terms (ETFIQ)0.0%
Protection left in index points (ETFIQ)69.2% of 98.8%
Days left in period6
Expense ratio (issuer page, Oct 1, 2026)0.69%
CBOO (Calamos Bitcoin Structured Alt Protection ETF - October), buffer ETFs fields as of Oct 1, 2026. Source: ETFIQ.
Issuer-published figures as of the date shown; ETFIQ calculations marked. Definitions on the learn page. How these figures are computed

Questions people ask about CBOO

How far can CBOO fall before the buffer helps?
0.0% in fund-price terms on Oct 1, 2026, by the issuer's figure. In index terms Bitcoin can fall 0.0% from that level before the buffer begins. Losses until that point are the holder's.
How much of the CBOO buffer is left?
69.2% of the 98.8% buffer sat below the Bitcoin level on Oct 1, 2026. That is an ETFIQ calculation in index points, on one definition for every issuer.
When does CBOO reset?
The outcome period ends on Oct 7, 2026, 6 days from the data on Oct 1, 2026. A new cap is set the next day and the buffer starts again.
What does CBOO cost?
The prospectus expense ratio is 0.69% a year.
Sources and dates
Prices, CBOOTiingo end-of-day · Oct 1, 2026
Fee, 0.69%Issuer page · Oct 1, 2026
Net assets, $6mIssuer page · Sep 30, 2026
IssuerCalamos page for CBOO ↗
IssuerCalamos product table ↗
All fund filingsProspectus filings on SEC EDGAR ↗

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.

How these figures are computed →Standards and sources →Open data →
Cite this page

ETFIQ, CBOO, buffer ETFs, data as of Oct 1, 2026. https://etfiq.com/funds/cboo

Open CBOO live on ETFIQ

The outcome band for CBOO, redrawn every trading night. Free to use with the credit link.

Free to use with attribution; the underlying files are at Open data.

Buffer
The first slice of loss the fund absorbs for you over its outcome period, stated on the reference index. A 15% buffer means the index can fall 15% before you take any of it.
Cap
The most the fund can return over the period if held from the first day to the last. Quoted gross and net of fees. Set by the option market on day one, so the same fund can have a different cap each year.
Outcome period
The window, usually twelve months and sometimes six or three, over which the cap and buffer apply. On its last day the options expire, the fund resets, and a new cap is struck from that day’s option prices.
Reset
The day one outcome period ends and the next begins, with a fresh buffer and a fresh cap struck at that day’s level.
Protection left
How much of the buffer still sits below today’s index level. All of it when the index is above its starting level; less once the index is inside the buffer range.
Every term used here, defined in full on the buffer ETFs vocabulary page. →
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