APRW vs CPSP: Cap, Buffer & Days Left
As of Oct 9, 2026 APRW can fall 7.8% before its buffer engages and CPSP 3.8%. Net assets: $203m on Oct 8, 2026 for AllianzIM U.S. Equity Buffer20 ETF - Apr, and $24m on Oct 9, 2026 for Calamos S&P 500 ® Structured Alt Protection ETF - April.
CPSP costs 0.05 points a year less; their one-year returns differ by 4.9 points; APRW is 8.5 times larger.
| APRW | CPSP | |
|---|---|---|
| Expense ratio | 0.74% | 0.69% |
| Net assets, as of Oct 8, 2026 | $203m | $24m |
| Total return, 1 year | +11.0% | +6.1% |
| What it tracks | SPY | SPY |
| Holdings in common | not published | |
| Index fall to the buffer | 16.5% | 15.8% |
APRW: reference +19.7% since period start, fund +7.6%; buffer 0 to −20; cap +11.9%; At its cap. Figures to Oct 9, 2026.
APRW: reference +19.7% since period start, fund +7.6%; buffer 0 to −20; cap +11.9%; At its cap. Figures to Oct 9, 2026.
CPSP: reference +18.8% since period start, fund +3.6%; buffer Floor; cap +6.7%; At its cap. Figures to Oct 9, 2026.
Figures to Oct 9, 2026.
These are two different products. CPSP is a floor fund, which caps how far a holder can fall. APRW 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.
Where each one stands today
APRW resets first, on Mar 31, 2027, 173 days from now; CPSP runs to Mar 31, 2027, 173 days. A fall from here reaches APRW’s buffer after 7.8% and CPSP’s after 3.8%. 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 | APRW | CPSP | APRW | CPSP |
| 3 months | +2.1% | +1.4% | −1.0 pts | −1.8 pts |
| 6 months | +5.8% | +2.8% | −8.8 pts | −11.8 pts |
| 1 year | +11.0% | +6.1% | −5.0 pts | −9.9 pts |
| 3 years | +34.7% | not published | −44.4 pts | not published |
Each fund's gap is to its reference's price return, dividends left out: the basis the outcome period uses. Source: ETFIQ. Open the live comparison on ETFIQ →
On the same fields
As of Oct 9, 2026. Source: ETFIQ.
APRW in plain words
SPY had already risen past this fund's cap of +11.9% for the period on Oct 9, 2026, so in index terms there is no more upside to collect. The fund's own price can still drift up to about 3.3% as the period runs out. The fund's price can fall 7.8% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 16.5% from today's level to the point where the buffer begins. Protection left, in index points: 20.0% of the 20.0% buffer still sits below today's SPY level. 173 days remained on Oct 9, 2026. On Mar 31, 2027 the period ends and a new cap is set.
CPSP in plain words
SPY had already risen past this fund's cap of +6.7% for the period on Oct 9, 2026, so in index terms there is no more upside to collect. The fund's price can fall 3.8% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 15.8% 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.
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.
ETFIQ, APRW against CPSP, data as of Oct 9, 2026. https://etfiq.com/compare/buffer/aprw-vs-cpsp
ETFIQ. (Oct 9, 2026). APRW against CPSP. Retrieved from https://etfiq.com/compare/buffer/aprw-vs-cpsp
[APRW against CPSP (ETFIQ, Oct 9, 2026)](https://etfiq.com/compare/buffer/aprw-vs-cpsp)
Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.