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Data as of .

CPSM vs HMAY: which one stands where?

As of Sep 21, 2026 HMAY can fall 5.0% before its buffer engages and CPSM 2.0%, and CPSM resets 3 days sooner.

Calamos S&P 500 ® Structured Alt Protection ETF - May and Corgi U.S. Equities 100% Structured Buffer ETF - May Series.

CPSMFull floor
full floor beneathfull floor−0.2% buffer start0% period start+6.5% capTODAY · SPY +5.7%full floor beneathfull floor−0.2% buffer start0% start+6.5% capTODAY · SPY +5.7%
HMAYFull floor
full floor beneathfull floor0% period start+6.5% capTODAY · SPY +5.3%full floor beneathfull floor0% start+6.5% capTODAY · SPY +5.3%

Where each one stands today

CPSM resets first, on Apr 30, 2027, 221 days from now; HMAY runs to Apr 30, 2027, 224 days. A fall from here reaches CPSM’s buffer after 2.0% and HMAY’s after 5.0%. Both track SPY, so what separates them is where each is in its own period.

Every figure is ETFIQ’s own, from the issuer’s published outcome-period terms. A buffer ETF holds FLEX options on its reference index rather than shares, so there is no holdings overlap between two of them to report.

Performance, window by window

CPSM and HMAY over each window. Every figure is an ETFIQ calculation with distributions reinvested. Source: ETFIQ.
WindowTotal returnGap to the reference
CPSMHMAYCPSMHMAY
3 months+1.0%+0.2%−1.2 pts−2.0 pts
6 months+2.6%not published−15.4 ptsnot published
1 year+4.6%not published−11.9 ptsnot published
Open the live comparison on ETFIQ
CPSM and HMAY on the same fields, as of Sep 21, 2026. Source: ETFIQ.
CPSM
Calamos S&P 500 ® Structured Alt Protection ETF - May
Absorbs losses from 0.2% to 100.0% on SPY and caps the gain at 6.5%, over a period ending Apr 30, 2027
HMAY
Corgi U.S. Equities 100% Structured Buffer ETF - May Series
Absorbs the whole loss on SPY and caps the gain at 6.5%, over a period ending Apr 30, 2027
IssuerCalamosCorgi
Reference indexSPYSPY
Buffer0% to 100%100%
Outcome periodMay 1, 2026 to Apr 30, 2027May 1, 2026 to Apr 30, 2027
Days left221224
Starting cap+6.5%+6.5%
Can still gainnot publishednot published
Fall before buffer2.0%5.0%
Protection left, index points99.8% of 99.8%100.0% of 100.0%
Index return this period+5.7%+5.3%
Fund return this period+1.8%+1.7%
State todayOpenOpen
Expense ratio0.69%0.30%
Net assets$58m$2m

CPSM in plain words

The fund's price can fall 2.0% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 5.6% from today's level to the point where the buffer begins. Protection left, in index points: 99.8% of the 99.8% buffer still sits below today's SPY level. 221 days remained on Sep 21, 2026. On Apr 30, 2027 the period ends and a new cap is set.

HMAY in plain words

The fund's price can fall 5.0% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 5.0% 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. 224 days remained on Sep 21, 2026.

Questions people ask

Which resets first, CPSM or HMAY?
CPSM ends its outcome period on Apr 30, 2027 and HMAY on Apr 30, 2027. A new cap is set the day after each.
Which is cheaper, CPSM or HMAY?
CPSM charges 0.69% a year and HMAY charges 0.30%, so HMAY is cheaper. Fees come from each fund's prospectus.

Other comparisons

Where these figures came from

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

CPSM against HMAY, ETFIQ, data as of Sep 21, 2026. Every figure is calculated from a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, CPSM against HMAY, data as of Sep 21, 2026. https://etfiq.com/compare/buffer/cpsm-vs-hmay Free to use with attribution; the underlying files are at Open data.

How every figure is computed · Standards and sources