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Data as of Oct 28, 2026.

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CMAY vs IVV: Differences, Returns & Fees

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CMAY and IVV are measured over different days, and IVV charges 0.03% to CMAY's 0.30%.

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Net assets: $1.2m on Oct 28, 2026 for Corgi U.S. Equities 15% Structured Buffer ETF - May Series, and $885.1bn on Oct 27, 2026 for iShares Core S&P 500 ETF.

CMAY on its own →IVV on its own →
At a glance
+3.9%
CMAY total return, since launch, May 1, 2026
+13.7%
IVV total return, 1 year
0.30%
CMAY expense ratio
0.03%
IVV expense ratio

Pair scorecard

IVV costs 0.27 points a year less; IVV is far larger, $885.1bn against $1.2m.

CMAY vs IVV: Differences, Returns & Fees
MeasureCMAYIVV
Return
Total return, 1 yearnot published+13.7%
Drawdown
Index fall to the buffer6.6%
Fund price fall to the buffer6.6%
Benchmark
What it tracksSPYS&P 500
The outcome period
Buffer left, in index points15.0% of 15.0%
Days left in the period185
Period endsApr 30, 2027
Cost and size
Expense ratio0.30%0.03%
Net assets, as of Oct 27, 2026$1.2m$885.1bn
Holdings
Holdings in commonnot published
In the S&P 500, by weight100%
Top ten holdings, share of the fund38.1%

Method

Side by side

CMAY Corgi U.S. Equities 15% Structured Buffer ETF - May Series IVV iShares Core S&P 500 ETF
Where it sits Buffer ETF Stock ETF
Issuer Corgi iShares
What it is Defined outcome, 15% on SPY Tracks the S&P 500
Total return, 1 year +3.9% (since launch, May 1, 2026) +13.7%
Its benchmark over the same days +7.2% (SPY) (since launch, May 1, 2026) +13.6% (SPY)
Gap to its benchmark −3.3 pts vs SPY (since launch, May 1, 2026) +0.1 pts vs SPY
Expense ratio 0.30% 0.03%
Holdings not read by ETFIQ 505
Net assets, CMAY as of Oct 28, 2026 and IVV as of Oct 27, 2026 $1.2m $885.1bn

CMAY and IVV on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

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About each fund
CMAY

The fund's price can fall 6.6% from here before the buffer starts absorbing losses, by the issuer's number. In index terms, SPY can fall 6.6% 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. 185 days remained on Oct 27, 2026. On Apr 30, 2027 the period ends and a new cap is set.

IVV

IVV tracks the S&P 500. Over the year to Oct 28, 2026 it returned +13.7% with distributions reinvested, against +13.6% for its benchmark, the S&P 500. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer for Oct 27, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 505 positions, with the top ten at 38.1%.

Questions people ask

Are CMAY and IVV in the same category?
CMAY is a buffer ETF and IVV is a stock ETF, so they do different jobs. The table compares what both publish: return, cost and holdings.
Which is cheaper, CMAY or IVV?
IVV is cheaper, by 0.27 percentage points a year. That is about $27 on $10,000 held for a year. Fees come from each fund's prospectus.
Other comparisons
CMAY vs SPYCMAY vs VOOCMAY vs SPYMIVV vs PMMYIVV vs PMMRIVV vs PMJAIVV vs PMFBIVV vs PMAU
Where to next
SPY →CMAY on its own →IVV on its own →Hold both: look the portfolio through →Rankings →IVV dividend history →IVV holdings →Standards and sources →
Sources and dates
CMAY filings on SEC EDGAR ↗
Corgi website ↗
IVV filings on SEC EDGAR ↗
IVV prospectus with the expense ratio (SEC) ↗
iShares page for IVV ↗

Links are sources, not endorsements. A comparison is not a recommendation.

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ETFIQ, CMAY against IVV, data as of Oct 28, 2026. https://etfiq.com/compare/any/cmay-vs-ivv

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