Data as of Nov 4, 2026.

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Buffer ETFs

FMAY vs ZJUN: Cap, Buffer & Days Left

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As of Nov 4, 2026 FMAY can fall 4.5% before its buffer engages and ZJUN 1.9%, and FMAY resets 10 days sooner.

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Net assets: $1.5bn on Nov 3, 2026 for FT Vest U.S. Equity Buffer ETF - May, and $155m on Nov 4, 2026 for Innovator Equity Defined Protection ETF - 1 Yr June.

At a glance
4.5%
FMAY can fall this far before its buffer
1.9%
ZJUN can fall this far before its buffer
12.0%
FMAY can still gain
6.0%
ZJUN can still gain
FMAY Between buffer and cap
Between buffer and capFMAY: reference +3.7% since period start, fund +3.8%; buffer 0 to −10; cap +17.1%; Between buffer and cap. Data to Nov 4, 2026.10 pts+13.4% more to the cap−10.0% floor0% period start+17.1% cap+3.7% gain capturedTODAY · SPY +3.7%Between buffer and capFMAY: reference +3.7% since period start, fund +3.8%; buffer 0 to −10; cap +17.1%; Between buffer and cap. Data to Nov 4, 2026.−10.0% floor0% start+17.1% cap10 pts of buffer+3.7% gain captured+13.4% more to the capTODAY · SPY +3.7%

FMAY: reference +3.7% since period start, fund +3.8%; buffer 0 to −10; cap +17.1%; Between buffer and cap. Data to Nov 4, 2026.

FMAY: reference +3.7% since period start, fund +3.8%; buffer 0 to −10; cap +17.1%; Between buffer and cap. Data to Nov 4, 2026.
ZJUN Full floor
Full floorZJUN: reference +1.3% since period start, fund +1.6%; buffer Floor; cap +8.1%; Full floor. Data to Nov 4, 2026.full floor beneathfull floor0% period start+8.1% cap+1.3% gain captured+6.7% more to the capTODAY · SPY +1.3%Full floorZJUN: reference +1.3% since period start, fund +1.6%; buffer Floor; cap +8.1%; Full floor. Data to Nov 4, 2026.full floor beneathfull floor0% start+8.1% cap+1.3% gain captured+6.7% more to the capTODAY · SPY +1.3%

ZJUN: reference +1.3% since period start, fund +1.6%; buffer Floor; cap +8.1%; Full floor. Data to Nov 4, 2026.

Data to Nov 4, 2026.

Pair scorecard

ZJUN costs 0.06 points a year less; their one-year returns differ by 5.1 points; FMAY is 9.7 times larger.

Points (pts) are percentage points.

FMAY vs ZJUN: Cap, Buffer & Days Left
MeasureFMAYZJUN
Return
Total return, 1 year+9.9%+4.8%
Drawdown
Index fall to the buffer3.6%1.3%
Benchmark
What it tracksSPYSPY
Cost and size
Expense ratio0.85%0.79%
Net assets, as of Nov 3, 2026$1.5bn$154m
Holdings
Holdings in commonnot published

Method

Risk and return

Jun 13, 2025 to Oct 30, 2026 · 72 weekly returns · each against SPY
FMAY ZJUN
Return
Total return edge FMAY +16.8% +7.3%
Annualized edge FMAY +11.8% +5.2%
Price return edge FMAY +16.8% +7.3%
Risk
Volatility edge ZJUN 6.1% 1.9%
Max drawdown edge ZJUN −3.7% −0.9%
Downside capture 52.0% 12.0%
Beta 0.50 0.14
Risk-adjusted
Sharpe edge FMAY 1.23 0.65
Sortino edge FMAY 2.07 1.05
Treynor 0.150 0.083
Calmar edge ZJUN 3.16 5.51
Against the benchmark
Alpha 0.0% a year −1.0% a year
Alpha t-stat 0.01 −1.40
Information ratio −1.23 −1.38
Tracking error 6.1% 10.0%
Reading

From Jun 2025 to Oct 2026, FMAY returned more: +16.8% to +7.3%. ZJUN swung less: 1.9% to 6.1%. ZJUN fell less at its worst: −0.9% to −3.7%.

Full scorecard

19 measures, with how each is measured
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Risk and return: FMAY vs ZJUN: Cap, Buffer & Days Left
MeasureFMAYZJUNSPYEdgeHow it is measured
Return
Total return+16.8%+7.3%FMAYPrice change plus distributions, reinvested.
Annualized+11.8%+5.2%FMAYTotal return as a yearly rate.
Price return+16.8%+7.3%FMAYPrice change alone, distributions left out.
Risk
Volatility6.1%1.9%ZJUNSpread of weekly returns, annualized. Lower is steadier.
Downside deviation3.6%1.1%ZJUNLike volatility, counting only weeks below the Treasury bill rate.
Max drawdown−3.7%−0.9%ZJUNDeepest fall from a high to the low after it.
Upside capture42.9%12.5%100.0%FMAYShare of its benchmark's rise caught in the weeks it rose.
Downside capture52.0%12.0%100.0%ZJUNShare of its benchmark's fall taken in the weeks it fell. Lower is better.
Beta0.500.141.00ZJUN lowerHow far it moves for each 1% its benchmark moves.
R squared0.910.821.00Not an edgeShare of its weekly moves its benchmark explains.
Risk-adjusted
Sharpe1.230.65FMAYReturn above Treasury bills per unit of volatility.
Sortino2.071.05FMAYReturn above Treasury bills per unit of downside deviation.
Treynor0.1500.0830.150FMAYReturn above Treasury bills per unit of beta.
Calmar3.165.51ZJUNAnnualized return divided by the max drawdown.
Against the benchmark
BenchmarkSPYSPYSPYThe ETF each fund is measured against.
Alpha0.0% a year−1.0% a year0.0%Not significantYearly return beyond what its beta to the benchmark predicts.
Alpha t-stat0.01−1.40Not an edgeHow sure the alpha is. Below 2, it could be chance.
Alpha range−3.2% to +3.2%−2.3% to +0.4%Both include zeroThe 95% range for the yearly alpha.
Information ratio−1.23−1.38FMAYReturn against its benchmark per unit of tracking error.
Tracking error6.1%10.0%0.0%Not an edgeHow far weekly returns stray from the benchmark, annualized.

Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 72 weekly returns. Cash rate: the 13-week Treasury bill.

Window by window

Window by window: FMAY vs ZJUN: Cap, Buffer & Days Left
Total returnGap to the reference's price return
WindowFMAYZJUNFMAYZJUN
3 months+0.5%+0.7%+0.9 pts+1.1 pts
6 months+3.8%+1.9%−0.7 pts−2.6 pts
1 year+9.9%+4.8%−3.6 pts−8.7 pts
3 years+48.5%–−27.9 pts–
Since launchNot the same days: FMAY May 2020 · ZJUN Jun 2025+85.5%+7.9%−74.4 pts−21.5 pts

Each fund's gap is to its reference's price return, dividends left out: the basis the outcome period uses. – means no data for this window. Open this comparison in the app →

Side by side

FMAY FT Vest U.S. Equity Buffer ETF - May · Absorbs the first 10% of loss on SPY and caps the gain at 17.1%, over a period ending May 21, 2027 ZJUN Innovator Equity Defined Protection ETF - 1 Yr June · Absorbs the whole loss on SPY and caps the gain at 8.1%, over a period ending May 31, 2027
Reference index SPY SPY
Buffer 10% 100%
Outcome period May 18, 2026 to May 21, 2027 May 31, 2026 to May 31, 2027
Days left 198 208
Starting cap +17.1% +8.1%
Can still gain 12.0% 6.0%
Fall before buffer 4.5% 1.9%
Protection left, index points 10.0% of 10.0% 100.0% of 100.0%
Index return this period +3.7% +1.3%
Fund return this period +3.8% +1.6%
State today Open Open
Expense ratio 0.85% 0.79%
Net assets, FMAY as of Nov 3, 2026 and ZJUN as of Nov 4, 2026 $1.5bn $155m

As of Nov 4, 2026. Source: ETFIQ.

These are two different products. ZJUN is a floor fund, which caps how far a holder can fall. FMAY is a buffer fund, which absorbs the first part of a fall and leaves everything below it with the holder.

Where each one stands today

FMAY resets first, on May 21, 2027, 198 days from now; ZJUN runs to May 31, 2027, 208 days. FMAY can still gain 12.0% before its cap, ZJUN 6.0%. A fall from here reaches FMAY’s buffer after 4.5% and ZJUN’s after 1.9%. Both track SPY, so what separates them is where each is in its own period.

Client brief:

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About each fund
FMAY

From its price on Nov 4, 2026, the fund can gain about 12.0% more before it reaches its cap. The fund's price can fall 4.5% from here before the buffer starts absorbing losses, by the issuer's number. In index terms, SPY can fall 3.6% from today's level to the point where the buffer begins. Protection left, in index points: 10.0% of the 10.0% buffer still sits below today's SPY level. 198 days remained on Nov 4, 2026. On May 21, 2027 the period ends and a new cap is set.

ZJUN

From its price on Nov 4, 2026, the fund can gain about 6.0% more before it reaches its cap. The fund's price can fall 1.9% from here before the buffer starts absorbing losses, by the issuer's number. In index terms, SPY can fall 1.3% 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. 208 days remained on Nov 4, 2026. On May 31, 2027 the period ends and a new cap is set.

Questions people ask

Which has more room to gain, FMAY or ZJUN?
From their prices on Nov 4, 2026, FMAY can gain about 12.0% before its cap and ZJUN about 6.0%, so FMAY has more room left this period.
Which resets first, FMAY or ZJUN?
FMAY ends its outcome period on May 21, 2027 and ZJUN on May 31, 2027. A new cap is set the day after each.
Which is cheaper, FMAY or ZJUN?
FMAY charges 0.85% a year and ZJUN charges 0.79%, so ZJUN is cheaper. Fees come from each fund's prospectus.
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Sources and dates

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

How this is computed

ETFIQ calculates every number 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 number is an ETFIQ calculation with distributions reinvested.

Cite this pageCitation, APA and Markdown

ETFIQ, FMAY against ZJUN, data as of Nov 4, 2026. https://etfiq.com/compare/buffer/fmay-vs-zjun

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