BMAY vs MAYU: Cap, Buffer & Days Left
As of Oct 9, 2026 BMAY can fall 6.5% before its buffer engages and MAYU 6.4%. Net assets: $238m on Oct 9, 2026 for Innovator U.S. Equity Buffer ETF - May, and $44m on Oct 8, 2026 for AllianzIM U.S. Equity Buffer15 Uncapped ETF - May.
MAYU costs 0.05 points a year less; their one-year returns differ by 0.5 points; BMAY is 5.3 times larger.
| BMAY | MAYU | |
|---|---|---|
| Expense ratio | 0.79% | 0.74% |
| Net assets, as of Oct 8, 2026 | $238m | $44m |
| Total return, 1 year | +11.9% | +12.4% |
| What it tracks | SPY | SPY |
| Holdings in common | not published | |
| Index fall to the buffer | 7.7% | |
BMAY: reference +8.3% since period start, fund +6.6%; buffer 0 to −9; cap +16.9%; Between buffer and cap. Figures to Oct 9, 2026.
BMAY: reference +8.3% since period start, fund +6.6%; buffer 0 to −9; cap +16.9%; Between buffer and cap. Figures to Oct 9, 2026.
MAYU: reference +8.3% since period start, fund +6.0%; buffer 0 to −15; no cap; No cap. Figures to Oct 9, 2026.
MAYU: reference +8.3% since period start, fund +6.0%; buffer 0 to −15; no cap; No cap. Figures to Oct 9, 2026.
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
BMAY resets first, on Apr 30, 2027, 203 days from now; MAYU runs to Apr 30, 2027, 203 days. A fall from here reaches BMAY’s buffer after 6.5% and MAYU’s after 6.4%. Both track SPY, so what separates them is where each is in its own period.
Performance, window by window
| Total return | Gap to the reference's price return | |||
|---|---|---|---|---|
| Window | BMAY | MAYU | BMAY | MAYU |
| 3 months | +3.0% | +1.8% | −0.2 pts | −1.3 pts |
| 6 months | +7.3% | +12.3% | −7.3 pts | −2.3 pts |
| 1 year | +11.9% | +12.4% | −4.0 pts | −3.6 pts |
| 3 years | +56.1% | not published | −23.1 pts | not published |
Each fund's gap is to its reference's price return, dividends left out: the basis the outcome period uses. Source: ETFIQ. Open the live comparison on ETFIQ →
On the same fields
As of Oct 9, 2026. Source: ETFIQ.
BMAY in plain words
From its price on Oct 9, 2026, the fund can gain about 9.4% more before it reaches its cap. The fund's price can fall 6.5% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 7.7% from today's level to the point where the buffer begins. Protection left, in index points: 9.0% of the 9.0% 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.
MAYU in plain words
This fund has no cap. It takes a share of any further rise in SPY. The fund's price can fall 6.4% from here before the buffer starts absorbing losses, by the issuer's figure. Protection left, in index points: 15.0% of the 15.0% buffer still sits below today's SPY level. On Apr 30, 2027 the period ends and new terms are set.
Questions people ask
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.
ETFIQ, BMAY against MAYU, data as of Oct 9, 2026. https://etfiq.com/compare/buffer/bmay-vs-mayu
ETFIQ. (Oct 9, 2026). BMAY against MAYU. Retrieved from https://etfiq.com/compare/buffer/bmay-vs-mayu
[BMAY against MAYU (ETFIQ, Oct 9, 2026)](https://etfiq.com/compare/buffer/bmay-vs-mayu)
Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.