Which resets first, CPSN or SIXZ?

CPSN ends its outcome period on Oct 30, 2026 and SIXZ on Oct 31, 2026. A new cap is set the day after each.

Which is cheaper, CPSN or SIXZ?

CPSN charges 0.69% a year and SIXZ charges 0.74%, so CPSN is cheaper. Fees come from each fund's prospectus.

Open in the app Compare their flows Ask IQ about these two funds

CPSN vs SIXZ: Cap, Buffer & Days Left

As of Oct 13, 2026 SIXZ can fall 6.4% before its buffer engages and CPSN 6.1%, and CPSN resets 1 day sooner. Net assets on Oct 13, 2026: $34m for Calamos S&P 500 ® Structured Alt Protection ETF - November and $65m for AllianzIM U.S. Equity Buffer10 ETF - May.

CPSN costs 0.05 points a year less; their one-year returns differ by 5.8 points; SIXZ is 1.9 times larger.

Points (pts) are percentage points.

CPSN vs SIXZ: Cap, Buffer & Days Left
	CPSN	SIXZ
Expense ratio	0.69%	0.74%
Net assets	$34m	$65m
Total return, 1 year	+6.2%	+12.0%
What it tracks	SPY	SPY
Holdings in common	not published
Index fall to the buffer	12.2%	7.6%

CPSNAt its cap

CPSN: reference +13.8% since period start, fund +5.8%; buffer Floor; cap +6.8%; At its cap. Figures to Oct 13, 2026.

Figures to Oct 13, 2026.

SIXZAt its cap

SIXZ: reference +8.3% since period start, fund +6.5%; buffer 0 to −10; cap +7.7%; At its cap. Figures to Oct 13, 2026.

These are two different products. CPSN is a floor fund, which caps how far a holder can fall. SIXZ is a buffer fund, which absorbs the first part of a fall and leaves everything below it with the holder.

Both are already at their cap, so neither gains from more rise in the index before the period ends.

Where each one stands today

CPSN resets first, on Oct 30, 2026, 17 days from now; SIXZ runs to Oct 31, 2026, 18 days. A fall from here reaches CPSN’s buffer after 6.1% and SIXZ’s after 6.4%. Both track SPY, so what separates them is where each is in its own period.

Performance, window by window

Performance, window by window: CPSN vs SIXZ: Cap, Buffer & Days Left
	Total return		Gap to the reference's price return
Window	CPSN	SIXZ	CPSN	SIXZ
3 months	+1.9%	+3.3%	−1.6 pts	−0.2 pts
6 months	+4.1%	+9.4%	−7.9 pts	−2.6 pts
1 year	+6.2%	+12.0%	−11.2 pts	−5.3 pts
Since launch Not the same days: CPSN Nov 2024 · SIXZ May 2024	+12.8%	+31.0%	−23.5 pts	−24.4 pts

Each fund's gap is to its reference's price return, dividends left out: the basis the outcome period uses. Source: ETFIQ. Open this comparison in the app →

On the same fields

CPSN

Calamos S&P 500 ® Structured Alt Protection ETF - November · Absorbs the whole loss on SPY and caps the gain at 6.8%, over a period ending Oct 30, 2026

SIXZ

AllianzIM U.S. Equity Buffer10 ETF - May · Absorbs the first 10% of loss on SPY and caps the gain at 7.7%, over a period ending Oct 31, 2026

Issuer Calamos AllianzIM

Reference index SPY SPY

Buffer 100% 10%

Outcome period Nov 3, 2025 to Oct 30, 2026 May 1, 2026 to Oct 31, 2026

Days left 17 18

Starting cap +6.8% +7.7%

Can still gain not published 0.9%

Fall before buffer 6.1% 6.4%

Protection left, index points 100.0% of 100.0% 10.0% of 10.0%

Index return this period +13.8% +8.3%

Fund return this period +5.8% +6.5%

State today At cap At cap

Expense ratio 0.69% 0.74%

Net assets $34m $65m

As of Oct 13, 2026. Source: ETFIQ.

About CPSN

SPY had already risen past this fund's cap of +6.8% for the period on Oct 13, 2026, so in index terms there is no more upside to collect. The fund's price can fall 6.1% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 12.2% from today's level to the point where the buffer begins. Protection left, in index points: 100.0% of the 100.0% buffer still sits below today's SPY level. 17 days remained on Oct 13, 2026. On Oct 30, 2026 the period ends and a new cap is set.

About SIXZ

SPY had already risen past this fund's cap of +7.7% for the period on Oct 13, 2026, so in index terms there is no more upside to collect. The fund's own price can still drift up to about 0.9% as the period runs out. The fund's price can fall 6.4% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 7.6% from today's level to the point where the buffer begins. Protection left, in index points: 10.0% of the 10.0% buffer still sits below today's SPY level. 18 days remained on Oct 13, 2026. On Oct 31, 2026 the period ends and a new cap is set.

Questions people ask

Which resets first, CPSN or SIXZ?: CPSN ends its outcome period on Oct 30, 2026 and SIXZ on Oct 31, 2026. A new cap is set the day after each.
Which is cheaper, CPSN or SIXZ?: CPSN charges 0.69% a year and SIXZ charges 0.74%, so CPSN is cheaper. Fees come from each fund's prospectus.

Other comparisons

CPSN vs DDFN CPSN vs FHDG CPSN vs DHDG CPSN vs DECU SIXZ vs DDTN SIXZ vs NOVP SIXZ vs CPSO SIXZ vs XOCT

S&P 500 (SPY) →All buffer ETFs ranked by the Downside Cover Score →How the scores are computed →CPSN on its own →SIXZ on its own →How every figure is computed →Standards and sources →

Where these figures came from

CPSN filings on SEC EDGAR ↗CPSN prospectus with the expense ratio (SEC) ↗Calamos website ↗SIXZ filings on SEC EDGAR ↗AllianzIM page for SIXZ ↗

ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.

How this is computed

ETFIQ calculates every figure from each issuer’s published outcome-period terms. Buffer ETFs hold options on an index, not shares, so there is no holdings overlap to report.

Every figure is an ETFIQ calculation with distributions reinvested.

Cite this pageCitation, APA and Markdown

ETFIQ, CPSN against SIXZ, data as of Oct 13, 2026. https://etfiq.com/compare/buffer/cpsn-vs-sixz

Open data

Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.