CMAY vs PBMY: Cap, Buffer & Days Left

CMAY can fall 7.6% before its buffer engages as of Oct 12, 2026, and PBMY 4.9% as of Oct 13, 2026. Net assets: $2m on Oct 12, 2026 for Corgi U.S. Equities 15% Structured Buffer ETF - May Series, and $39m on Oct 13, 2026 for PGIM S&P 500 Buffer 20 ETF - May .

CMAY costs 0.20 points a year less; PBMY is far larger, $39m against $2m.

Points (pts) are percentage points.

CMAY vs PBMY: Cap, Buffer & Days Left
CMAYPBMY
Expense ratio0.30%0.50%
Net assets, as of Oct 12, 2026$2m$39m
Total return, 1 yearnot published+9.3%
What it tracksSPYSPY
Holdings in commonnot published
Index fall to the buffer7.6%7.5%
CMAYBetween buffer and cap
Between buffer and capCMAY: reference +8.3% since period start, fund +5.3%; buffer 0 to −15; cap +11.0%; Between buffer and cap. Figures to Oct 12, 2026.15 pts of buffer+8.3% gain captured−15.0% floor0% period start+11.0% cap+2.7% more to the capTODAY · SPY +8.3%Between buffer and capCMAY: reference +8.3% since period start, fund +5.3%; buffer 0 to −15; cap +11.0%; Between buffer and cap. Figures to Oct 12, 2026.15 pts+8.3%−15.0% floor0% start+11.0% cap+2.7% more to the capTODAY · SPY +8.3%

CMAY: reference +8.3% since period start, fund +5.3%; buffer 0 to −15; cap +11.0%; Between buffer and cap. Figures to Oct 12, 2026.

CMAY: reference +8.3% since period start, fund +5.3%; buffer 0 to −15; cap +11.0%; Between buffer and cap. Figures to Oct 12, 2026.

PBMYBetween buffer and cap
Between buffer and capPBMY: reference +8.2% since period start, fund +4.7%; buffer 0 to −20; cap +11.3%; Between buffer and cap. Figures to Oct 13, 2026.20 pts of buffer+8.2% gain captured−20.0% floor0% period start+11.3% cap+3.2% more to the capTODAY · SPY +8.2%Between buffer and capPBMY: reference +8.2% since period start, fund +4.7%; buffer 0 to −20; cap +11.3%; Between buffer and cap. Figures to Oct 13, 2026.20 pts of buffer+8.2%−20.0% floor0% start+11.3% cap+3.2% more to the capTODAY · SPY +8.2%

PBMY: reference +8.2% since period start, fund +4.7%; buffer 0 to −20; cap +11.3%; Between buffer and cap. Figures to Oct 13, 2026.

PBMY: reference +8.2% since period start, fund +4.7%; buffer 0 to −20; cap +11.3%; Between buffer and cap. Figures to Oct 13, 2026.

ETFIQ Downside Cover Score · PBMY scores higherIf the market falls into a bear market from here, how much does the buffer absorb?
0.2, the lowest in this set99.8, the highest

A percentile among the 292 buffer ETFs on stocks with a live outcome period. Today's position against one 20% fall; it ignores smaller falls, and stock buffers are never ranked against bond or commodity ones. All buffer ETFs ranked by it → How it is computed →

Where each one stands today

PBMY resets first, on Apr 30, 2027, 199 days from now; CMAY runs to Apr 30, 2027, 200 days. A fall from here reaches CMAY’s buffer after 7.6% and PBMY’s after 4.9%. Both track SPY, so what separates them is where each is in its own period.

Performance, window by window

Performance, window by window: CMAY vs PBMY: Cap, Buffer & Days Left
Total returnGap to the reference's price return
WindowCMAYPBMYCMAYPBMY
3 months+2.3%+2.7%−1.5 pts−1.2 pts
6 monthsnot published+4.9%not published−8.5 pts
1 yearnot published+9.3%not published−9.8 pts
Since launch
Not the same days: CMAY May 2026 · PBMY May 2024
+4.2%+28.5%−3.8 pts−27.0 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

CMAY
Corgi U.S. Equities 15% Structured Buffer ETF - May Series · Absorbs the first 15% of loss on SPY and caps the gain at 11.0%, over a period ending Apr 30, 2027
PBMY
PGIM S&P 500 Buffer 20 ETF - May · Absorbs the first 20% of loss on SPY and caps the gain at 11.3%, over a period ending Apr 30, 2027
Issuer Corgi PGIM
Reference index SPY SPY
Buffer 15% 20%
Outcome period May 1, 2026 to Apr 30, 2027 May 1, 2026 to Apr 30, 2027
Days left 200 199
Starting cap +11.0% +11.3%
Can still gain not published 5.9%
Fall before buffer 7.6% 4.9%
Protection left, index points 15.0% of 15.0% 20.0% of 20.0%
Index return this period +8.3% +8.2%
Fund return this period +5.3% +4.7%
State today Open Open
Expense ratio 0.30% 0.50%
Net assets, CMAY as of Oct 12, 2026 and PBMY as of Oct 13, 2026 $2m $39m

As of Oct 13, 2026. Source: ETFIQ.

About CMAY

The fund's price can fall 7.6% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 7.6% 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. 200 days remained on Oct 12, 2026. On Apr 30, 2027 the period ends and a new cap is set.

About PBMY

From its price on Oct 13, 2026, the fund can gain about 5.9% more before it reaches its cap. The fund's price can fall 4.9% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 7.5% from today's level to the point where the buffer begins. Protection left, in index points: 20.0% of the 20.0% buffer still sits below today's SPY level. 199 days remained on Oct 13, 2026.

Questions people ask

Which resets first, CMAY or PBMY?
CMAY ends its outcome period on Apr 30, 2027 and PBMY on Apr 30, 2027. A new cap is set the day after each.
Which is cheaper, CMAY or PBMY?
CMAY charges 0.30% a year and PBMY charges 0.50%, so CMAY 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

It is a place in a set, not a rating or a recommendation.

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, CMAY against PBMY, data as of Oct 13, 2026. https://etfiq.com/compare/buffer/cmay-vs-pbmy

Open data

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