Data as of Nov 4, 2026.
CPSA vs CTAU: Cap, Buffer & Days Left
CPSA can fall 1.3% before its buffer engages as of Nov 4, 2026, and CTAU 0.0% as of Nov 3, 2026.
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Net assets on Nov 4, 2026: $50m for Calamos S&P 500 Structured Alt Protection ETF - August and $1.1m for Corgi U.S. Equities 30% Structured Buffer ETF - August Series.
CPSA: reference +1.2% since period start, fund +1.2%; buffer Floor; cap +7.8%; Full floor. Data to Nov 4, 2026.
Data to Nov 4, 2026.CTAU: reference −0.4% since period start, fund +0.4%; buffer 0 to −30; cap +15.0%; Buffer working. Data to Nov 3, 2026.
CTAU: reference −0.4% since period start, fund +0.4%; buffer 0 to −30; cap +15.0%; Buffer working. Data to Nov 3, 2026.Pair scorecard
CTAU costs 0.39 points a year less; CPSA is far larger, $50m against $1.1m.
Points (pts) are percentage points.
| Measure | CPSA | CTAU |
|---|---|---|
| Return | ||
| Total return, 1 year | +5.8% | not published |
| Drawdown | ||
| Index fall to the buffer | 1.2% | |
| Benchmark | ||
| What it tracks | SPY | SPY |
| Cost and size | ||
| Expense ratio | 0.69% | 0.30% |
| Net assets | $50m | $1.1m |
| Holdings | ||
| Holdings in common | not published | |
Window by window
| Total return | Gap to the reference's price return | |||
|---|---|---|---|---|
| Window | CPSA | CTAU | CPSA | CTAU |
| 3 months | +0.6% | +0.3% | +1.0 pts | +0.7 pts |
| 6 months | +2.6% | – | −1.9 pts | – |
| 1 year | +5.8% | – | −7.8 pts | – |
| Since launchNot the same days: CPSA Aug 2024 · CTAU Aug 2026 | +16.6% | +0.4% | −24.6 pts | +0.9 pts |
Each fund's gap is to its reference's price return, dividends left out: the basis the outcome period uses. – means no data for this window. Open this comparison in the app →
Side by side
As of Nov 4, 2026. Source: ETFIQ.
These are two different products. CPSA is a floor fund, which caps how far a holder can fall. CTAU 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
CPSA resets first, on Jul 30, 2027, 268 days from now; CTAU runs to Jul 31, 2027, 270 days. A fall from here reaches CPSA’s buffer after 1.3% and CTAU’s after 0.0%. Both track SPY, so what separates them is where each is in its own period.
CPSA
The fund's price can fall 1.3% from here before the buffer starts absorbing losses, by the issuer's number. 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. 268 days remained on Nov 4, 2026. On Jul 30, 2027 the period ends and a new cap is set.
CTAU
Protection left, in index points: 29.6% of the 30.0% buffer still sits below today's SPY level. 270 days remained on Nov 3, 2026. On Jul 31, 2027 the period ends and a new cap is set.
Questions people ask
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, CPSA against CTAU, data as of Nov 4, 2026. https://etfiq.com/compare/buffer/cpsa-vs-ctau
ETFIQ. (Nov 4, 2026). CPSA against CTAU. Retrieved from https://etfiq.com/compare/buffer/cpsa-vs-ctau
[CPSA against CTAU (ETFIQ, Nov 4, 2026)](https://etfiq.com/compare/buffer/cpsa-vs-ctau)
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