APXM vs CPSM: Cap, Buffer & Days Left

As of Oct 9, 2026 APXM can fall 3.6% before its buffer engages and CPSM 2.4%, and APXM resets 14 days sooner. Net assets on Oct 9, 2026: $22m for FT Vest U.S. Equity Max Buffer ETF - April and $59m for Calamos S&P 500 ® Structured Alt Protection ETF - May.

CPSM costs 0.16 points a year less; their one-year returns differ by 0.3 points; CPSM is 2.7 times larger.

Points (pts) are percentage points.

APXM vs CPSM: Cap, Buffer & Days Left
APXMCPSM
Expense ratio0.85%0.69%
Net assets$22m$59m
Total return, 1 year+5.2%+4.9%
What it tracksSPYSPY
Holdings in commonnot published
Index fall to the buffer8.8%7.4%
APXMAt its cap
At its capAPXM: reference +9.6% since period start, fund +2.8%; buffer 0 to −50; cap +7.0%; At its cap. Figures to Oct 9, 2026.50.1 pts of buffer+7%−50.1% floor0% period start+7.0% capTODAY · SPY +9.6%At its capAPXM: reference +9.6% since period start, fund +2.8%; buffer 0 to −50; cap +7.0%; At its cap. Figures to Oct 9, 2026.50.1 pts of buffer−50.1% floor0% start+7.0% cap+7% gain capturedTODAY · SPY +9.6%

APXM: reference +9.6% since period start, fund +2.8%; buffer 0 to −50; cap +7.0%; At its cap. Figures to Oct 9, 2026.

APXM: reference +9.6% since period start, fund +2.8%; buffer 0 to −50; cap +7.0%; At its cap. Figures to Oct 9, 2026.

CPSMAt its cap
At its capCPSM: reference +8.0% since period start, fund +2.2%; buffer Floor; cap +6.7%; At its cap. Figures to Oct 9, 2026.full floor beneath+6.7%full floor0% period start+6.7% capTODAY · SPY +8.0%At its capCPSM: reference +8.0% since period start, fund +2.2%; buffer Floor; cap +6.7%; At its cap. Figures to Oct 9, 2026.full floor beneathfull floor0% start+6.7% cap+6.7% gain capturedTODAY · SPY +8.0%

CPSM: reference +8.0% since period start, fund +2.2%; buffer Floor; cap +6.7%; At its cap. Figures to Oct 9, 2026.

Figures to Oct 9, 2026.

These are two different products. CPSM is a floor fund, which caps how far a holder can fall. APXM 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

APXM resets first, on Apr 16, 2027, 189 days from now; CPSM runs to Apr 30, 2027, 203 days. A fall from here reaches APXM’s buffer after 3.6% and CPSM’s after 2.4%. Both track SPY, so what separates them is where each is in its own period.

Performance, window by window

Performance, window by window: APXM vs CPSM: Cap, Buffer & Days Left
Total returnGap to the reference's price return
WindowAPXMCPSMAPXMCPSM
3 months+1.5%+1.3%−1.6 pts−1.9 pts
6 months+2.9%+2.5%−11.7 pts−12.1 pts
1 year+5.2%+4.9%−10.8 pts−11.1 pts
Since launch
Not the same days: APXM Apr 2025 · CPSM May 2024
+9.6%+18.7%−41.9 pts−37.0 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

APXM
FT Vest U.S. Equity Max Buffer ETF - April · Absorbs the first 50% of loss on SPY and caps the gain at 7.0%, over a period ending Apr 16, 2027
CPSM
Calamos S&P 500 ® Structured Alt Protection ETF - May · Absorbs the whole loss on SPY and caps the gain at 6.7%, over a period ending Apr 30, 2027
Reference index SPY SPY
Buffer 50% 100%
Outcome period Apr 20, 2026 to Apr 16, 2027 May 1, 2026 to Apr 30, 2027
Days left 189 203
Starting cap +7.0% +6.7%
Can still gain 3.2% not published
Fall before buffer 3.6% 2.4%
Protection left, index points 50.1% of 50.1% 100.0% of 100.0%
Index return this period +9.6% +8.0%
Fund return this period +2.8% +2.2%
State today At cap At cap
Expense ratio 0.85% 0.69%
Net assets $22m $59m

As of Oct 9, 2026. Source: ETFIQ.

About APXM

SPY had already risen past this fund's cap of +7.0% for the period on Oct 9, 2026, so in index terms there is no more upside to collect. The fund's own price can still drift up to about 3.2% as the period runs out. The fund's price can fall 3.6% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 8.8% from today's level to the point where the buffer begins. Protection left, in index points: 50.1% of the 50.1% buffer still sits below today's SPY level. 189 days remained on Oct 9, 2026. On Apr 16, 2027 the period ends and a new cap is set.

About CPSM

SPY had already risen past this fund's cap of +6.7% for the period on Oct 9, 2026, so in index terms there is no more upside to collect. The fund's price can fall 2.4% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 7.4% 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. 203 days remained on Oct 9, 2026. On Apr 30, 2027 the period ends and a new cap is set.

Questions people ask

Which resets first, APXM or CPSM?
APXM ends its outcome period on Apr 16, 2027 and CPSM on Apr 30, 2027. A new cap is set the day after each.
Which is cheaper, APXM or CPSM?
APXM charges 0.85% a year and CPSM charges 0.69%, so CPSM is cheaper. Fees come from each fund's prospectus.
Other comparisons
Where these figures came from

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, APXM against CPSM, data as of Oct 9, 2026. https://etfiq.com/compare/buffer/apxm-vs-cpsm

Open data

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