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CJUN vs CPSU: Cap, Buffer & Days Left

As of Oct 9, 2026 CJUN can fall 2.6% before its buffer engages and CPSU 1.6%, and CPSU resets 3 days sooner. Net assets on Oct 9, 2026: $1m for Corgi U.S. Equities 15% Structured Buffer ETF and $29m for Calamos S&P 500 ® Structured Alt Protection ETF - June.

CJUN costs 0.39 points a year less; CPSU is far larger, $29m against $1m.

Points (pts) are percentage points.

CJUN vs CPSU: Cap, Buffer & Days Left
CJUNCPSU
Expense ratio0.30%0.69%
Net assets$1m$29m
Total return, 1 yearnot published+4.9%
What it tracksSPYSPY
Holdings in commonnot published
CJUNBetween buffer and cap
Between buffer and capCJUN: reference +2.6% since period start, fund +3.1%; buffer 0 to −15; cap +13.9%; Between buffer and cap. Figures to Oct 9, 2026.15 pts of buffer+11.3% to cap−15.0% floor0% period start+13.9% cap+2.6% gain capturedTODAY · SPY +2.6%Between buffer and capCJUN: reference +2.6% since period start, fund +3.1%; buffer 0 to −15; cap +13.9%; Between buffer and cap. Figures to Oct 9, 2026.15 pts−15.0% floor0% start+13.9% cap+2.6% gain captured+11.3% more to the capTODAY · SPY +2.6%

CJUN: reference +2.6% since period start, fund +3.1%; buffer 0 to −15; cap +13.9%; Between buffer and cap. Figures to Oct 9, 2026.

CJUN: reference +2.6% since period start, fund +3.1%; buffer 0 to −15; cap +13.9%; Between buffer and cap. Figures to Oct 9, 2026.

CPSUFull floor
Full floorCPSU: reference +2.6% since period start, fund +1.5%; buffer Floor; cap +7.3%; Full floor. Figures to Oct 9, 2026.full floor beneathfull floor0% period start+7.3% cap+2.6% gain captured+4.6% more to the capTODAY · SPY +2.6%Full floorCPSU: reference +2.6% since period start, fund +1.5%; buffer Floor; cap +7.3%; Full floor. Figures to Oct 9, 2026.full floor beneathfull floor0% start+7.3% cap+2.6% gain captured+4.6% more to the capTODAY · SPY +2.6%

CPSU: reference +2.6% since period start, fund +1.5%; buffer Floor; cap +7.3%; Full floor. Figures to Oct 9, 2026.

Figures to Oct 9, 2026.

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

Where each one stands today

CPSU resets first, on May 28, 2027, 231 days from now; CJUN runs to May 31, 2027, 234 days. A fall from here reaches CJUN’s buffer after 2.6% and CPSU’s after 1.6%. Both track SPY, so what separates them is where each is in its own period.

Performance, window by window

Performance, window by window: CJUN vs CPSU: Cap, Buffer & Days Left
Total returnGap to the reference's price return
WindowCJUNCPSUCJUNCPSU
3 months+2.4%+1.4%−0.8 pts−1.8 pts
6 monthsnot published+2.4%not published−12.2 pts
1 yearnot published+4.9%not published−11.1 pts
Since launch
Not the same days: CJUN Jun 2026 · CPSU Jun 2025
+2.5%+8.0%−0.1 pts−23.4 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

CJUN
Corgi U.S. Equities 15% Structured Buffer ETF · Absorbs the first 15% of loss on SPY and caps the gain at 13.9%, over a period ending May 31, 2027
CPSU
Calamos S&P 500 ® Structured Alt Protection ETF - June · Absorbs the whole loss on SPY and caps the gain at 7.3%, over a period ending May 28, 2027
Issuer Corgi Calamos
Reference index SPY SPY
Buffer 15% 100%
Outcome period Jun 1, 2026 to May 31, 2027 Jun 1, 2026 to May 28, 2027
Days left 234 231
Starting cap +13.9% +7.3%
Can still gain not published not published
Fall before buffer 2.6% 1.6%
Protection left, index points 15.0% of 15.0% 100.0% of 100.0%
Index return this period +2.6% +2.6%
Fund return this period +3.1% +1.5%
State today Open Open
Expense ratio 0.30% 0.69%
Net assets $1m $29m

As of Oct 9, 2026. Source: ETFIQ.

About CJUN

The fund's price can fall 2.6% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 2.6% from today's level to the point where the buffer begins. Protection left, in index points: 15.0% of the 15.0% buffer still sits below today's SPY level. 234 days remained on Oct 9, 2026. On May 31, 2027 the period ends and a new cap is set.

About CPSU

The fund's price can fall 1.6% from here before the buffer starts absorbing losses, by the issuer's figure. Protection left, in index points: 100.0% of the 100.0% buffer still sits below today's SPY level. 231 days remained on Oct 9, 2026. On May 28, 2027 the period ends and a new cap is set.

Questions people ask

Which resets first, CJUN or CPSU?
CJUN ends its outcome period on May 31, 2027 and CPSU on May 28, 2027. A new cap is set the day after each.
Which is cheaper, CJUN or CPSU?
CJUN charges 0.30% a year and CPSU charges 0.69%, so CJUN is cheaper. Fees come from each fund's prospectus.
Other comparisons
CJUN vs DDTZCJUN vs MAYMCJUN vs JNEUCJUN vs XMAYCPSU vs JUNCCPSU vs CTJNCPSU vs HJUNCPSU vs PMJN
SPY →All buffer ETFs ranked by the Downside Cover Score →How the scores are computed →CJUN on its own →CPSU on its own →How every figure is computed →Standards and sources →
Where these figures came from
Corgi website ↗CPSU filings on SEC EDGAR ↗Calamos website ↗

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, CJUN against CPSU, data as of Oct 9, 2026. https://etfiq.com/compare/buffer/cjun-vs-cpsu

Open data

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