Data as of Nov 4, 2026.

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Buffer ETFs

FDEC vs XDEC: Cap, Buffer & Days Left

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As of Nov 4, 2026 FDEC can fall 10.4% before its buffer engages and XDEC 8.4%.

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Net assets on Nov 3, 2026: $1.3bn for FT Vest U.S. Equity Buffer ETF - December and $208m for FT Vest U.S. Equity Enhance & Moderate Buffer ETF - December.

At a glance
10.4%
FDEC can fall this far before its buffer
8.4%
XDEC can fall this far before its buffer
3.0%
FDEC can still gain
0.9%
XDEC can still gain
FDEC Between buffer and cap
Between buffer and capFDEC: reference +12.7% since period start, fund +10.6%; buffer 0 to −10; cap +14.8%; Between buffer and cap. Data to Nov 4, 2026.10 pts of buffer+12.7% gain captured−10.0% floor0% period start+14.8% cap+2.1% more to the capTODAY · SPY +12.7%Between buffer and capFDEC: reference +12.7% since period start, fund +10.6%; buffer 0 to −10; cap +14.8%; Between buffer and cap. Data to Nov 4, 2026.10 pts+12.7%−10.0% floor0% start+14.8% cap+2.1% more to the capTODAY · SPY +12.7%

FDEC: reference +12.7% since period start, fund +10.6%; buffer 0 to −10; cap +14.8%; Between buffer and cap. Data to Nov 4, 2026.

FDEC: reference +12.7% since period start, fund +10.6%; buffer 0 to −10; cap +14.8%; Between buffer and cap. Data to Nov 4, 2026.
XDEC At its cap
At its capXDEC: reference +12.7% since period start, fund +8.2%; buffer 0 to −15; cap +10.1%; At its cap. Data to Nov 4, 2026.15 pts of buffer+10.1% gain captured−15.0% floor0% period start+10.1% capTODAY · SPY +12.7%At its capXDEC: reference +12.7% since period start, fund +8.2%; buffer 0 to −15; cap +10.1%; At its cap. Data to Nov 4, 2026.15 pts+10.1%−15.0% floor0% start+10.1% capTODAY · SPY +12.7%

XDEC: reference +12.7% since period start, fund +8.2%; buffer 0 to −15; cap +10.1%; At its cap. Data to Nov 4, 2026.

XDEC: reference +12.7% since period start, fund +8.2%; buffer 0 to −15; cap +10.1%; At its cap. Data to Nov 4, 2026.

Pair scorecard

Both cost 0.85% a year; their one-year returns differ by 4.1 points; FDEC is 6.3 times larger.

Points (pts) are percentage points.

FDEC vs XDEC: Cap, Buffer & Days Left
MeasureFDECXDEC
Return
Total return, 1 year+13.5%+9.4%
Drawdown
Index fall to the buffer11.2%
Benchmark
What it tracksSPYSPY
Cost and size
Expense ratio0.85%0.85%
Net assets, as of Nov 3, 2026$1.3bn$208m
Holdings
Holdings in commonnot published

Method

Risk and return

Dec 31, 2021 to Oct 30, 2026 · 252 weekly returns · each against SPY
FDEC XDEC
Return
Total return edge FDEC +59.9% +42.6%
Annualized edge FDEC +10.2% +7.6%
Price return edge FDEC +59.9% +42.6%
Risk
Volatility edge XDEC 10.8% 7.5%
Max drawdown edge XDEC −15.3% −10.9%
Downside capture 69.0% 44.1%
Beta 0.65 0.43
Risk-adjusted
Sharpe edge FDEC 0.57 0.47
Sortino edge FDEC 0.86 0.69
Treynor 0.096 0.082
Calmar edge XDEC (slight) 0.66 0.70
Against the benchmark
Alpha +0.9% a year 0.0% a year
Alpha t-stat 0.80 0.03
Information ratio −0.31 −0.48
Tracking error 6.3% 9.7%
Reading

From Dec 2021 to Oct 2026, FDEC returned more: +59.9% to +42.6%. XDEC swung less: 7.5% to 10.8%. XDEC fell less at its worst: −10.9% to −15.3%.

Full scorecard

19 measures, with how each is measured
Open ↓
Risk and return: FDEC vs XDEC: Cap, Buffer & Days Left
MeasureFDECXDECSPYEdgeHow it is measured
Return
Total return+59.9%+42.6%FDECPrice change plus distributions, reinvested.
Annualized+10.2%+7.6%FDECTotal return as a yearly rate.
Price return+59.9%+42.6%FDECPrice change alone, distributions left out.
Risk
Volatility10.8%7.5%XDECSpread of weekly returns, annualized. Lower is steadier.
Downside deviation7.2%5.1%XDECLike volatility, counting only weeks below the Treasury bill rate.
Max drawdown−15.3%−10.9%XDECDeepest fall from a high to the low after it.
Upside capture54.7%30.5%100.0%FDECShare of its benchmark's rise caught in the weeks it rose.
Downside capture69.0%44.1%100.0%XDECShare of its benchmark's fall taken in the weeks it fell. Lower is better.
Beta0.650.431.00XDEC lowerHow far it moves for each 1% its benchmark moves.
R squared0.940.881.00Not an edgeShare of its weekly moves its benchmark explains.
Risk-adjusted
Sharpe0.570.47FDECReturn above Treasury bills per unit of volatility.
Sortino0.860.69FDECReturn above Treasury bills per unit of downside deviation.
Treynor0.0960.0820.082FDECReturn above Treasury bills per unit of beta.
Calmar0.660.70XDEC (slight)Annualized return divided by the max drawdown.
Against the benchmark
BenchmarkSPYSPYSPYThe ETF each fund is measured against.
Alpha+0.9% a year0.0% a year0.0%Not significantYearly return beyond what its beta to the benchmark predicts.
Alpha t-stat0.800.03Not an edgeHow sure the alpha is. Below 2, it could be chance.
Alpha range−1.4% to +3.2%−2.3% to +2.4%Both include zeroThe 95% range for the yearly alpha.
Information ratio−0.31−0.48FDECReturn against its benchmark per unit of tracking error.
Tracking error6.3%9.7%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, 252 weekly returns. Cash rate: the 13-week Treasury bill.

Window by window

Window by window: FDEC vs XDEC: Cap, Buffer & Days Left
Total returnGap to the reference's price return
WindowFDECXDECFDECXDEC
3 months+1.5%+1.7%+1.9 pts+2.1 pts
6 months+5.1%+4.3%+0.6 pts−0.1 pts
1 year+13.5%+9.4%−0.1 pts−4.1 pts
3 years+58.0%+31.9%−18.4 pts−44.5 pts
Since launchNot the same days: FDEC Dec 2020 · XDEC Dec 2021+86.5%+46.1%−21.9 pts−22.4 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

FDEC FT Vest U.S. Equity Buffer ETF - December · Absorbs the first 10% of loss on SPY and caps the gain at 14.8%, over a period ending Dec 18, 2026 XDEC FT Vest U.S. Equity Enhance & Moderate Buffer ETF - December · Absorbs the first 15% of loss on SPY and caps the gain at 10.1%, over a period ending Dec 18, 2026
Reference index SPY SPY
Buffer 10% 15%
Outcome period Dec 22, 2025 to Dec 18, 2026 Dec 22, 2025 to Dec 18, 2026
Days left 44 44
Starting cap +14.8% +10.1%
Can still gain 3.0% 0.9%
Fall before buffer 10.4% 8.4%
Protection left, index points 10.0% of 10.0% 15.0% of 15.0%
Index return this period +12.7% +12.7%
Fund return this period +10.6% +8.2%
State today Open At cap
Expense ratio 0.85% 0.85%
Net assets, as of Nov 3, 2026 $1.3bn $208m

As of Nov 4, 2026. Source: ETFIQ.

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

XDEC is already at its cap, so more rise in the index adds nothing to it before the period ends.

Both are First Trust funds, so the difference between them is the terms rather than the house.

Where each one stands today

FDEC resets first, on Dec 18, 2026, 44 days from now; XDEC runs to Dec 18, 2026, 44 days. FDEC can still gain 3.0% before its cap, XDEC 0.9%. A fall from here reaches FDEC’s buffer after 10.4% and XDEC’s after 8.4%. Both track SPY, so what separates them is where each is in its own period.

Client brief:

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About each fund
FDEC

From its price on Nov 4, 2026, the fund can gain about 3.0% more before it reaches its cap. The fund's price can fall 10.4% from here before the buffer starts absorbing losses, by the issuer's number. In index terms, SPY can fall 11.2% 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. 44 days remained on Nov 4, 2026. On Dec 18, 2026 the period ends and a new cap is set.

XDEC

SPY had already risen past this fund's cap of +10.1% for the period on Nov 4, 2026, so in index terms there is no more upside to collect. The fund's own price can still drift up to about 0.9% as the period runs out. The fund's price can fall 8.4% from here before the buffer starts absorbing losses, by the issuer's number. Protection left, in index points: 15.0% of the 15.0% buffer still sits below today's SPY level.

Questions people ask

Which has more room to gain, FDEC or XDEC?
From their prices on Nov 4, 2026, FDEC can gain about 3.0% before its cap and XDEC about 0.9%, so FDEC has more room left this period.
Which resets first, FDEC or XDEC?
FDEC ends its outcome period on Dec 18, 2026 and XDEC on Dec 18, 2026. A new cap is set the day after each.
Which is cheaper, FDEC or XDEC?
FDEC and XDEC both charge 0.85% a year, so neither 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

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, FDEC against XDEC, data as of Nov 4, 2026. https://etfiq.com/compare/buffer/fdec-vs-xdec

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