Data as of Nov 4, 2026.

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Buffer ETFs

FSEP vs SIXO: Cap, Buffer & Days Left

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As of Nov 4, 2026 FSEP can fall 1.5% before its buffer engages and SIXO 1.0%, and SIXO resets 170 days sooner.

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Net assets on Nov 3, 2026: $1.4bn for FT Vest U.S. Equity Buffer ETF - September and $119m for AllianzIM U.S. Equity Buffer10 ETF - Apr.

At a glance
1.5%
FSEP can fall this far before its buffer
1.0%
SIXO can fall this far before its buffer
15.1%
FSEP can still gain
6.7%
SIXO can still gain
FSEP Between buffer and cap
Between buffer and capFSEP: reference +0.7% since period start, fund +0.7%; buffer 0 to −10; cap +16.7%; Between buffer and cap. Data to Nov 4, 2026.10 pts of buffer+16% more to the cap−10.0% floor0% period start+16.7% cap+0.7% gain capturedTODAY · SPY +0.7%Between buffer and capFSEP: reference +0.7% since period start, fund +0.7%; buffer 0 to −10; cap +16.7%; Between buffer and cap. Data to Nov 4, 2026.10 pts+16% to cap−10.0% floor0% start+16.7% cap+0.7% gain capturedTODAY · SPY +0.7%

FSEP: reference +0.7% since period start, fund +0.7%; buffer 0 to −10; cap +16.7%; Between buffer and cap. Data to Nov 4, 2026.

FSEP: reference +0.7% since period start, fund +0.7%; buffer 0 to −10; cap +16.7%; Between buffer and cap. Data to Nov 4, 2026.
SIXO Between buffer and cap
Between buffer and capSIXO: reference +0.5% since period start, fund +0.6%; buffer 0 to −10; cap +7.7%; Between buffer and cap. Data to Nov 4, 2026.10 pts of buffer+7.2% more to the cap−10.0% floor0% period start+7.7% cap+0.5% gain capturedTODAY · SPY +0.5%Between buffer and capSIXO: reference +0.5% since period start, fund +0.6%; buffer 0 to −10; cap +7.7%; Between buffer and cap. Data to Nov 4, 2026.10 pts−10.0% floor0% start+7.7% cap+0.5% gain captured+7.2% more to the capTODAY · SPY +0.5%

SIXO: reference +0.5% since period start, fund +0.6%; buffer 0 to −10; cap +7.7%; Between buffer and cap. Data to Nov 4, 2026.

Data to Nov 4, 2026.

Pair scorecard

SIXO costs 0.11 points a year less; their one-year returns differ by 5.4 points; FSEP is 11.8 times larger.

Points (pts) are percentage points.

FSEP vs SIXO: Cap, Buffer & Days Left
MeasureFSEPSIXO
Return
Total return, 1 year+13.2%+7.8%
Drawdown
Index fall to the buffer0.7%0.5%
Benchmark
What it tracksSPYSPY
Cost and size
Expense ratio0.85%0.74%
Net assets, as of Nov 3, 2026$1.4bn$119m
Holdings
Holdings in commonnot published
ETFIQ Downside Cover Score · FSEP and SIXO score the same If the market falls into a bear market from here, how much does the buffer absorb?
IQ Buffer Score38.7FSEP38.7SIXO

How much of a bear-market fall the buffer would absorb from today's level, ranked against 292 buffer ETFs on stocks with a live outcome period. 100 is best. How it is computed

0.3, the lowest in this set 99.7, the highest

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 →

Method

Risk and return

Oct 8, 2021 to Oct 30, 2026 · 264 weekly returns · each against SPY
FSEP SIXO
Return
Total return edge FSEP +65.8% +44.7%
Annualized edge FSEP +10.5% +7.5%
Price return edge FSEP +65.8% +44.7%
Risk
Volatility edge SIXO 10.2% 8.6%
Max drawdown edge SIXO −13.2% −11.5%
Downside capture 67.2% 55.9%
Beta 0.61 0.51
Risk-adjusted
Sharpe edge FSEP 0.65 0.43
Sortino edge FSEP 0.98 0.62
Treynor 0.108 0.074
Calmar edge FSEP 0.79 0.66
Against the benchmark
Alpha +0.8% a year −1.1% a year
Alpha t-stat 0.72 −0.88
Information ratio −0.43 −0.68
Tracking error 6.8% 8.4%
Reading

From Oct 2021 to Oct 2026, FSEP returned more: +65.8% to +44.7%. SIXO swung less: 8.6% to 10.2%. SIXO fell less at its worst: −11.5% to −13.2%.

Full scorecard

19 measures, with how each is measured
Open ↓
Risk and return: FSEP vs SIXO: Cap, Buffer & Days Left
MeasureFSEPSIXOSPYEdgeHow it is measured
Return
Total return+65.8%+44.7%FSEPPrice change plus distributions, reinvested.
Annualized+10.5%+7.5%FSEPTotal return as a yearly rate.
Price return+65.8%+44.7%FSEPPrice change alone, distributions left out.
Risk
Volatility10.2%8.6%SIXOSpread of weekly returns, annualized. Lower is steadier.
Downside deviation6.7%6.1%SIXOLike volatility, counting only weeks below the Treasury bill rate.
Max drawdown−13.2%−11.5%SIXODeepest fall from a high to the low after it.
Upside capture52.1%37.5%100.0%FSEPShare of its benchmark's rise caught in the weeks it rose.
Downside capture67.2%55.9%100.0%SIXOShare of its benchmark's fall taken in the weeks it fell. Lower is better.
Beta0.610.511.00SIXO lowerHow far it moves for each 1% its benchmark moves.
R squared0.940.901.00Not an edgeShare of its weekly moves its benchmark explains.
Risk-adjusted
Sharpe0.650.43FSEPReturn above Treasury bills per unit of volatility.
Sortino0.980.62FSEPReturn above Treasury bills per unit of downside deviation.
Treynor0.1080.0740.095FSEPReturn above Treasury bills per unit of beta.
Calmar0.790.66FSEPAnnualized return divided by the max drawdown.
Against the benchmark
BenchmarkSPYSPYSPYThe ETF each fund is measured against.
Alpha+0.8% a year−1.1% a year0.0%Not significantYearly return beyond what its beta to the benchmark predicts.
Alpha t-stat0.72−0.88Not an edgeHow sure the alpha is. Below 2, it could be chance.
Alpha range−1.4% to +3.0%−3.4% to +1.3%Both include zeroThe 95% range for the yearly alpha.
Information ratio−0.43−0.68FSEPReturn against its benchmark per unit of tracking error.
Tracking error6.8%8.4%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, 264 weekly returns. Cash rate: the 13-week Treasury bill.

Window by window

Window by window: FSEP vs SIXO: Cap, Buffer & Days Left
Total returnGap to the reference's price return
WindowFSEPSIXOFSEPSIXO
3 months+2.2%+1.4%+2.6 pts+1.8 pts
6 months+6.1%+3.9%+1.6 pts−0.6 pts
1 year+13.2%+7.8%−0.4 pts−5.8 pts
3 years+52.7%+33.1%−23.7 pts−43.3 pts
Since launchNot the same days: FSEP Sep 2020 · SIXO Oct 2021+94.7%+46.3%−39.8 pts−30.3 pts

Each fund's gap is to its reference's price return, dividends left out: the basis the outcome period uses. Open this comparison in the app →

Side by side

FSEP FT Vest U.S. Equity Buffer ETF - September · Absorbs the first 10% of loss on SPY and caps the gain at 16.7%, over a period ending Sep 17, 2027 SIXO AllianzIM U.S. Equity Buffer10 ETF - Apr · Absorbs the first 10% of loss on SPY and caps the gain at 7.7%, over a period ending Mar 31, 2027
Reference index SPY SPY
Buffer 10% 10%
Outcome period Sep 21, 2026 to Sep 17, 2027 Oct 1, 2026 to Mar 31, 2027
Days left 317 147
Starting cap +16.7% +7.7%
Can still gain 15.1% 6.7%
Fall before buffer 1.5% 1.0%
Protection left, index points 10.0% of 10.0% 10.0% of 10.0%
Index return this period +0.7% +0.5%
Fund return this period +0.7% +0.6%
State today Open Open
Expense ratio 0.85% 0.74%
Net assets, as of Nov 3, 2026 $1.4bn $119m

As of Nov 4, 2026. Source: ETFIQ.

They do not reset together. SIXO has 147 days of its period left and FSEP has 317, so the two are not the same bet on the same months.

Where each one stands today

SIXO resets first, on Mar 31, 2027, 147 days from now; FSEP runs to Sep 17, 2027, 317 days. FSEP can still gain 15.1% before its cap, SIXO 6.7%. A fall from here reaches FSEP’s buffer after 1.5% and SIXO’s after 1.0%. Both track SPY, so what separates them is where each is in its own period.

Client brief:

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About each fund
FSEP

From its price on Nov 4, 2026, the fund can gain about 15.1% more before it reaches its cap. The fund's price can fall 1.5% from here before the buffer starts absorbing losses, by the issuer's number. In index terms, SPY can fall 0.7% 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. 317 days remained on Nov 4, 2026. On Sep 17, 2027 the period ends and a new cap is set.

SIXO

From its price on Nov 4, 2026, the fund can gain about 6.7% more before it reaches its cap. The fund's price can fall 1.0% from here before the buffer starts absorbing losses, by the issuer's number. In index terms, SPY can fall 0.5% from today's level to the point where the buffer begins. 147 days remained on Nov 4, 2026. On Mar 31, 2027 the period ends and a new cap is set.

Questions people ask

Which has more room to gain, FSEP or SIXO?
From their prices on Nov 4, 2026, FSEP can gain about 15.1% before its cap and SIXO about 6.7%, so FSEP has more room left this period.
Which resets first, FSEP or SIXO?
FSEP ends its outcome period on Sep 17, 2027 and SIXO on Mar 31, 2027. A new cap is set the day after each.
Which is cheaper, FSEP or SIXO?
FSEP charges 0.85% a year and SIXO charges 0.74%, so SIXO is cheaper. Fees come from each fund's prospectus.
Other comparisons
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Sources and dates

Links are sources, not endorsements. 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 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, FSEP against SIXO, data as of Nov 4, 2026. https://etfiq.com/compare/buffer/fsep-vs-sixo

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