CPSO vs DOCT: Cap, Buffer & Days Left
As of Oct 21, 2026 DOCT can fall 6.3% before its buffer engages and CPSO 0.6%, and CPSO resets 15 days sooner. Net assets on Oct 21, 2026: $32m for Calamos S&P 500 Structured Alt Protection ETF - October and $414m for FT Vest U.S. Equity Deep Buffer ETF - October.
CPSO costs 0.16 points a year less; their one-year returns differ by 4.9 points; DOCT is 13.1 times larger.
Points (pts) are percentage points.
| CPSO | DOCT | |
|---|---|---|
| Expense ratio | 0.69% | 0.85% |
| Net assets | $32m | $414m |
| Total return, 1 year | +6.0% | +10.9% |
| What it tracks | SPY | SPY |
| Holdings in common | not published | |
| Index fall to the buffer | 1.2% | 6.2% |
CPSO: reference +1.2% since period start, fund +0.6%; buffer Floor; cap +8.8%; Full floor. Figures to Oct 21, 2026.
Figures to Oct 21, 2026.
DOCT: reference +1.3% since period start, fund +0.5%; buffer −5 to −30; cap +14.2%; Between buffer and cap. Figures to Oct 21, 2026.
DOCT: reference +1.3% since period start, fund +0.5%; buffer −5 to −30; cap +14.2%; Between buffer and cap. Figures to Oct 21, 2026.
These are two different products. CPSO is a floor fund, which caps how far a holder can fall. DOCT 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, 344 days from now; DOCT runs to Oct 15, 2027, 359 days. A fall from here reaches CPSO’s buffer after 0.6% and DOCT’s after 6.3%. Both track SPY, so what separates them is where each is in its own period.
Performance, window by window
| Total return | Gap to the reference's price return | |||
|---|---|---|---|---|
| Window | CPSO | DOCT | CPSO | DOCT |
| 3 months | +1.9% | +3.5% | −1.5 pts | 0.0 pts |
| 6 months | +3.7% | +6.9% | −5.0 pts | −1.8 pts |
| 1 year | +6.0% | +10.9% | −9.1 pts | −4.2 pts |
| 3 years | – | +42.0% | – | −41.6 pts |
| Since launch Not the same days: CPSO Oct 2024 · DOCT Aug 2020 | +12.8% | +285.7% | −23.2 pts | +157.0 pts |
Each fund's gap is to its reference's price return, dividends left out: the basis the outcome period uses. Source: ETFIQ. – means no data for this window, usually because the fund is younger than it. Open this comparison in the app →
On the same fields
As of Oct 21, 2026. Source: ETFIQ.
About CPSO
The fund's price can fall 0.6% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 1.2% 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. 344 days remained on Oct 21, 2026. On Sep 30, 2027 the period ends and a new cap is set.
About DOCT
From its price on Oct 21, 2026, the fund can gain about 12.8% more before it reaches its cap. The fund's price can fall 6.3% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 6.2% 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. 359 days remained on Oct 21, 2026. On Oct 15, 2027 the period ends and a new cap is set.
Questions people ask
ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.
How this is computed
ETFIQ calculates every figure 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 figure is an ETFIQ calculation with distributions reinvested.
Cite this pageCitation, APA and Markdown
ETFIQ, CPSO against DOCT, data as of Oct 21, 2026. https://etfiq.com/compare/buffer/cpso-vs-doct
ETFIQ. (Oct 21, 2026). CPSO against DOCT. Retrieved from https://etfiq.com/compare/buffer/cpso-vs-doct
[CPSO against DOCT (ETFIQ, Oct 21, 2026)](https://etfiq.com/compare/buffer/cpso-vs-doct)
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