Which is cheaper, CMAY or SPY?

CMAY charges 0.30% a year and SPY charges 0.09%, so SPY is cheaper. Fees come from each fund's prospectus.

Are CMAY and SPY the same kind of fund?

No. CMAY is a buffer ETF and SPY is an index ETF, so they are built for different jobs. The table compares what both publish: return, cost and what each actually holds.

Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

CMAY vs SPY: how they differ

CMAY and SPY are measured over different days, and SPY charges 0.09% against 0.30%.

Corgi U.S. Equities 15% Structured Buffer ETF - May Series and SPDR S&P 500 ETF Trust.

CMAY and SPY on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
	CMAY Corgi U.S. Equities 15% Structured Buffer ETF - May Series	SPY SPDR S&P 500 ETF Trust
Where it sits	Buffer ETF	Core index fund
Issuer	Corgi	State Street
What it is	Defined outcome, 15% on SPY	S&P 500, book from IVV
Total return, 1 year	not published	+17.5%
S&P 500 over the same days	not published	+17.5%
Gap to the S&P 500	not available	0.0 pts
Expense ratio	0.30%	0.09%
Holdings	not filed	504

CMAY in plain words

The fund's price can fall 6.0% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 6.0% 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. 231 days remained on Sep 12, 2026. On Apr 30, 2027 the period ends and a new cap is set.

SPY in plain words

SPY is an index equity fund tracking the S&P 500. Over the year to Sep 11, 2026 it returned +17.5% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.09% a year. By its holdings filed for Jun 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 504 positions, with the top ten at 36.4%.

Questions people ask

Which is cheaper, CMAY or SPY?: CMAY charges 0.30% a year and SPY charges 0.09%, so SPY is cheaper. Fees come from each fund's prospectus.
Are CMAY and SPY the same kind of fund?: No. CMAY is a buffer ETF and SPY is an index ETF, so they are built for different jobs. The table compares what both publish: return, cost and what each actually holds.

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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.

CMAY against SPY, ETFIQ, data as of Sep 12, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, CMAY against SPY, data as of Sep 12, 2026. https://etfiq.com/compare/any/CMAY-SPY Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources