Data as of Nov 4, 2026.

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Buffer ETFs

DDEC vs XDEC: Cap, Buffer & Days Left

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As of Nov 4, 2026 DDEC can fall 13.7% before its buffer engages and XDEC 8.4%.

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Net assets on Nov 3, 2026: $437m for FT Vest U.S. Equity Deep Buffer ETF - December and $208m for FT Vest U.S. Equity Enhance & Moderate Buffer ETF - December.

At a glance
13.7%
DDEC can fall this far before its buffer
8.4%
XDEC can fall this far before its buffer
1.8%
DDEC can still gain
0.9%
XDEC can still gain
DDEC At its cap
At its capDDEC: reference +12.7% since period start, fund +9.1%; buffer −5 to −30; cap +12.0%; At its cap. Data to Nov 4, 2026.25 pts of buffer+12% gain captured−30.0% floor−5.0% buffer start0% period start+12.0% capfirst 5 pts are yours to loseTODAY · SPY +12.7%At its capDDEC: reference +12.7% since period start, fund +9.1%; buffer −5 to −30; cap +12.0%; At its cap. Data to Nov 4, 2026.25 pts of buffer+12%−30.0% floor−5.0% buffer start0% start+12.0% capfirst 5 pts are yours to loseTODAY · SPY +12.7%

DDEC: reference +12.7% since period start, fund +9.1%; buffer −5 to −30; cap +12.0%; At its cap. Data to Nov 4, 2026.

DDEC: reference +12.7% since period start, fund +9.1%; buffer −5 to −30; cap +12.0%; At its 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 1.8 points; DDEC is 2.1 times larger.

Points (pts) are percentage points.

DDEC vs XDEC: Cap, Buffer & Days Left
MeasureDDECXDEC
Return
Total return, 1 year+11.2%+9.4%
Drawdown
Index fall to the buffer15.7%11.2%
Benchmark
What it tracksSPYSPY
Cost and size
Expense ratio0.85%0.85%
Net assets, as of Nov 3, 2026$437m$208m
Holdings
Holdings in commonnot published

Method

Risk and return

Dec 31, 2021 to Oct 30, 2026 · 252 weekly returns · each against SPY
DDEC XDEC
Return
Total return edge DDEC +48.2% +42.6%
Annualized edge DDEC +8.5% +7.6%
Price return edge DDEC +48.2% +42.6%
Risk
Volatility edge DDEC (slight) 7.1% 7.5%
Max drawdown edge DDEC −9.6% −10.9%
Downside capture 45.7% 44.1%
Beta 0.40 0.43
Risk-adjusted
Sharpe edge DDEC 0.60 0.47
Sortino edge DDEC 0.91 0.69
Treynor 0.107 0.082
Calmar edge DDEC 0.88 0.70
Against the benchmark
Alpha +1.0% a year 0.0% a year
Alpha t-stat 0.79 0.03
Information ratio −0.38 −0.48
Tracking error 10.2% 9.7%
Reading

From Dec 2021 to Oct 2026, DDEC returned more: +48.2% to +42.6%. DDEC swung slightly less: 7.1% to 7.5%. DDEC fell less at its worst: −9.6% to −10.9%.

Full scorecard

19 measures, with how each is measured
Open ↓
Risk and return: DDEC vs XDEC: Cap, Buffer & Days Left
MeasureDDECXDECSPYEdgeHow it is measured
Return
Total return+48.2%+42.6%DDECPrice change plus distributions, reinvested.
Annualized+8.5%+7.6%DDECTotal return as a yearly rate.
Price return+48.2%+42.6%DDECPrice change alone, distributions left out.
Risk
Volatility7.1%7.5%DDEC (slight)Spread of weekly returns, annualized. Lower is steadier.
Downside deviation4.7%5.1%DDEC (slight)Like volatility, counting only weeks below the Treasury bill rate.
Max drawdown−9.6%−10.9%DDECDeepest fall from a high to the low after it.
Upside capture33.0%30.5%100.0%DDEC (slight)Share of its benchmark's rise caught in the weeks it rose.
Downside capture45.7%44.1%100.0%XDEC (slight)Share of its benchmark's fall taken in the weeks it fell. Lower is better.
Beta0.400.431.00DDEC lowerHow far it moves for each 1% its benchmark moves.
R squared0.840.881.00Not an edgeShare of its weekly moves its benchmark explains.
Risk-adjusted
Sharpe0.600.47DDECReturn above Treasury bills per unit of volatility.
Sortino0.910.69DDECReturn above Treasury bills per unit of downside deviation.
Treynor0.1070.0820.082DDECReturn above Treasury bills per unit of beta.
Calmar0.880.70DDECAnnualized return divided by the max drawdown.
Against the benchmark
BenchmarkSPYSPYSPYThe ETF each fund is measured against.
Alpha+1.0% a year0.0% a year0.0%Not significantYearly return beyond what its beta to the benchmark predicts.
Alpha t-stat0.790.03Not an edgeHow sure the alpha is. Below 2, it could be chance.
Alpha range−1.5% to +3.6%−2.3% to +2.4%Both include zeroThe 95% range for the yearly alpha.
Information ratio−0.38−0.48DDECReturn against its benchmark per unit of tracking error.
Tracking error10.2%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: DDEC vs XDEC: Cap, Buffer & Days Left
Total returnGap to the reference's price return
WindowDDECXDECDDECXDEC
3 months+1.7%+1.7%+2.1 pts+2.1 pts
6 months+4.8%+4.3%+0.3 pts−0.1 pts
1 year+11.2%+9.4%−2.3 pts−4.1 pts
3 years+43.5%+31.9%−32.9 pts−44.5 pts
Since launchNot the same days: DDEC Dec 2020 · XDEC Dec 2021+62.0%+46.1%−46.5 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

DDEC FT Vest U.S. Equity Deep Buffer ETF - December · Absorbs losses from 5.0% to 30.0% on SPY and caps the gain at 12.0%, 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 5% to 30% 15%
Outcome period Dec 22, 2025 to Dec 18, 2026 Dec 22, 2025 to Dec 18, 2026
Days left 44 44
Starting cap +12.0% +10.1%
Can still gain 1.8% 0.9%
Fall before buffer 13.7% 8.4%
Protection left, index points 25.0% of 25.0% 15.0% of 15.0%
Index return this period +12.7% +12.7%
Fund return this period +9.1% +8.2%
State today At cap At cap
Expense ratio 0.85% 0.85%
Net assets, as of Nov 3, 2026 $437m $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. DDEC is a buffer fund, which absorbs the first part of a fall and leaves everything below it with the holder.

Both are already at their cap, so neither gains from more rise in the index 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

DDEC resets first, on Dec 18, 2026, 44 days from now; XDEC runs to Dec 18, 2026, 44 days. DDEC can still gain 1.8% before its cap, XDEC 0.9%. A fall from here reaches DDEC’s buffer after 13.7% 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
DDEC

SPY had already risen past this fund's cap of +12.0% 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 1.8% as the period runs out. The fund's price can fall 13.7% from here before the buffer starts absorbing losses, by the issuer's number. In index terms, SPY can fall 15.7% from today's level to the point where the buffer begins. Protection left, in index points: 25.0% of the 25.0% 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. In index terms, SPY can fall 11.2% 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.

Questions people ask

Which has more room to gain, DDEC or XDEC?
From their prices on Nov 4, 2026, DDEC can gain about 1.8% before its cap and XDEC about 0.9%, so DDEC has more room left this period.
Which resets first, DDEC or XDEC?
DDEC 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, DDEC or XDEC?
DDEC 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, DDEC against XDEC, data as of Nov 4, 2026. https://etfiq.com/compare/buffer/ddec-vs-xdec

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