Data as of Nov 4, 2026.

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Buffer ETFs

CPSO vs DDTO: Cap, Buffer & Days Left

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As of Nov 4, 2026 DDTO can fall 0.7% before its buffer engages and CPSO 0.6%.

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Net assets on Nov 4, 2026: $34m for Calamos S&P 500 Structured Alt Protection ETF - October and $38m for Innovator Equity Dual Directional 10 Buffer ETF - Oct.

At a glance
CPSO Full floor
Full floorCPSO: reference +0.4% since period start, fund +0.6%; buffer Floor; cap +8.8%; Full floor. Data to Nov 4, 2026.full floor beneath+8.4% to capfull floor0% period start+8.8% cap+0.4% gain capturedTODAY · SPY +0.4%Full floorCPSO: reference +0.4% since period start, fund +0.6%; buffer Floor; cap +8.8%; Full floor. Data to Nov 4, 2026.full floor beneathfull floor0% start+8.8% cap+0.4% gain captured+8.4% more to the capTODAY · SPY +0.4%

CPSO: reference +0.4% since period start, fund +0.6%; buffer Floor; cap +8.8%; Full floor. Data to Nov 4, 2026.

Data to Nov 4, 2026.
DDTO Between buffer and cap
Between buffer and capDDTO: reference +0.5% since period start, fund +0.6%; buffer 0 to −10; cap +14.8%; Between buffer and cap. Data to Nov 4, 2026.10 pts of buffer+14.3% more to the cap−10.0% floor0% period start+14.8% cap+0.5% gain capturedTODAY · SPY +0.5%Between buffer and capDDTO: reference +0.5% since period start, fund +0.6%; buffer 0 to −10; cap +14.8%; Between buffer and cap. Data to Nov 4, 2026.−10.0% floor0% start+14.8% cap10 pts of buffer+0.5% gain captured+14.3% more to the capTODAY · SPY +0.5%

DDTO: reference +0.5% since period start, fund +0.6%; buffer 0 to −10; cap +14.8%; Between buffer and cap. Data to Nov 4, 2026.

DDTO: reference +0.5% since period start, fund +0.6%; buffer 0 to −10; cap +14.8%; Between buffer and cap. Data to Nov 4, 2026.

Pair scorecard

CPSO costs 0.10 points a year less; their one-year returns differ by 5.9 points; DDTO is 1.1 times larger.

Points (pts) are percentage points.

CPSO vs DDTO: Cap, Buffer & Days Left
MeasureCPSODDTO
Return
Total return, 1 year+6.1%+12.0%
Drawdown
Index fall to the buffer0.4%0.5%
Benchmark
What it tracksSPYSPY
Cost and size
Expense ratio0.69%0.79%
Net assets$34m$38m
Holdings
Holdings in commonnot published

Method

Window by window

Window by window: CPSO vs DDTO: Cap, Buffer & Days Left
Total returnGap to the reference's price return
WindowCPSODDTOCPSODDTO
3 months+1.4%+2.0%+1.8 pts+2.4 pts
6 months+3.1%+5.3%−1.3 pts+0.8 pts
1 year+6.1%+12.0%−7.5 pts−1.6 pts
Since launchNot the same days: CPSO Oct 2024 · DDTO Oct 2025+12.7%+12.0%−22.1 pts−2.7 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

CPSO Calamos S&P 500 Structured Alt Protection ETF - October · Absorbs the whole loss on SPY and caps the gain at 8.8%, over a period ending Sep 30, 2027 DDTO Innovator Equity Dual Directional 10 Buffer ETF - Oct · Absorbs the first 10% of loss on SPY and caps the gain at 14.8%, over a period ending Sep 30, 2027
Reference index SPY SPY
Buffer 100% 10%
Outcome period Oct 1, 2026 to Sep 30, 2027 Sep 30, 2026 to Sep 30, 2027
Days left 330 330
Starting cap +8.8% +14.8%
Can still gain not published 14.1%
Fall before buffer 0.6% 0.7%
Protection left, index points 100.0% of 100.0% 10.0% of 10.0%
Index return this period +0.4% +0.5%
Fund return this period +0.6% +0.6%
State today Open Open
Expense ratio 0.69% 0.79%
Net assets $34m $38m

As of Nov 4, 2026. Source: ETFIQ.

These are two different products. CPSO is a floor fund, which caps how far a holder can fall. DDTO 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

CPSO resets first, on Sep 30, 2027, 330 days from now; DDTO runs to Sep 30, 2027, 330 days. A fall from here reaches CPSO’s buffer after 0.6% and DDTO’s after 0.7%. Both track SPY, so what separates them is where each is in its own period.

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About each fund
CPSO

The fund's price can fall 0.6% from here before the buffer starts absorbing losses, by the issuer's number. In index terms, SPY can fall 0.4% 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. 330 days remained on Nov 4, 2026. On Sep 30, 2027 the period ends and a new cap is set.

DDTO

From its price on Nov 4, 2026, the fund can gain about 14.1% more before it reaches its cap. The fund's price can fall 0.7% 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. Protection left, in index points: 10.0% of the 10.0% buffer still sits below today's SPY level.

Questions people ask

Which resets first, CPSO or DDTO?
CPSO ends its outcome period on Sep 30, 2027 and DDTO on Sep 30, 2027. A new cap is set the day after each.
Which is cheaper, CPSO or DDTO?
CPSO charges 0.69% a year and DDTO charges 0.79%, so CPSO 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.

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ETFIQ, CPSO against DDTO, data as of Nov 4, 2026. https://etfiq.com/compare/buffer/cpso-vs-ddto

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