Data as of .
CPSU vs CTJN: which one stands where?
As of Sep 21, 2026 CPSU can fall 1.1% before its buffer engages and CTJN 0.4%, and CPSU resets 6 days sooner.
These are two different products. CPSU is a floor fund, which caps how far a holder can fall. CTJN 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
CPSU resets first, on May 28, 2027, 249 days from now; CTJN runs to May 31, 2027, 255 days. A fall from here reaches CPSU’s buffer after 1.1% and CTJN’s after 0.4%. Both track SPY, so what separates them is where each is in its own period.
Every figure is ETFIQ’s own, from the issuer’s published outcome-period terms. A buffer ETF holds FLEX options on its reference index rather than shares, so there is no holdings overlap between two of them to report.
Performance, window by window
| Window | Total return | Gap to the reference | ||
|---|---|---|---|---|
| CPSU | CTJN | CPSU | CTJN | |
| 3 months | +0.8% | +1.4% | −1.4 pts | −0.9 pts |
| 6 months | +2.8% | not published | −15.3 pts | not published |
| 1 year | +4.3% | not published | −12.3 pts | not published |
| CPSU Calamos S&P 500 ® Structured Alt Protection ETF - June Absorbs losses from 0.1% to 100.0% on SPY and caps the gain at 7.1%, over a period ending May 28, 2027 | CTJN Corgi U.S. Equities 30% Structured Buffer ETF Absorbs the first 30% of loss on SPY and caps the gain at 14.1%, over a period ending May 31, 2027 | |
|---|---|---|
| Issuer | Calamos | Corgi |
| Reference index | SPY | SPY |
| Buffer | 0% to 100% | 30% |
| Outcome period | Jun 1, 2026 to May 28, 2027 | Jun 1, 2026 to May 31, 2027 |
| Days left | 249 | 255 |
| Starting cap | +7.1% | +14.1% |
| Can still gain | not published | not published |
| Fall before buffer | 1.1% | 0.4% |
| Protection left, index points | 99.9% of 99.9% | 30.0% of 30.0% |
| Index return this period | +0.4% | +0.4% |
| Fund return this period | +1.0% | +1.0% |
| State today | Open | Open |
| Expense ratio | 0.69% | 0.30% |
| Net assets | $29m | $1m |
CPSU in plain words
The fund's price can fall 1.1% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 0.6% from today's level to the point where the buffer begins. Protection left, in index points: 99.9% of the 99.9% buffer still sits below today's SPY level. 249 days remained on Sep 21, 2026. On May 28, 2027 the period ends and a new cap is set.
CTJN in plain words
The fund's price can fall 0.4% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 0.4% from today's level to the point where the buffer begins. Protection left, in index points: 30.0% of the 30.0% buffer still sits below today's SPY level. 255 days remained on Sep 21, 2026. On May 31, 2027 the period ends and a new cap is set.
Questions people ask
- Which resets first, CPSU or CTJN?
- CPSU ends its outcome period on May 28, 2027 and CTJN on May 31, 2027. A new cap is set the day after each.
- Which is cheaper, CPSU or CTJN?
- CPSU charges 0.69% a year and CTJN charges 0.30%, so CTJN is cheaper. Fees come from each fund's prospectus.
Other comparisons
Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, CPSU against CTJN, data as of Sep 21, 2026. https://etfiq.com/compare/buffer/cpsu-vs-ctjn Free to use with attribution; the underlying files are at Open data.