Data as of .
AUGU vs CTAU: which one stands where?
As of Sep 21, 2026 AUGU can fall 3.1% before its buffer engages and CTAU 0.5%, and AUGU resets 3 days sooner.
ETFIQ Downside Cover Score: CTAU scores higher
If the market falls into a bear market from here, how much does the buffer absorb?
A percentile among the 293 buffer ETFs with a live outcome period. It is a position in a set, not a rating, and neither end of it is a recommendation. All buffer ETFs ranked by it · How it is computed
Where each one stands today
AUGU resets first, on Jul 31, 2027, 313 days from now; CTAU runs to Jul 31, 2027, 316 days. A fall from here reaches AUGU’s buffer after 3.1% and CTAU’s after 0.5%. 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 | ||
|---|---|---|---|---|
| AUGU | CTAU | AUGU | CTAU | |
| 3 months | +0.9% | not published | −1.4 pts | not published |
| 6 months | +12.8% | not published | −5.3 pts | not published |
| 1 year | +11.0% | not published | −5.6 pts | not published |
| AUGU AllianzIM U.S. Equity Buffer15 Uncapped ETF - Aug Absorbs the first 15% of loss on SPY and does not cap the gain, over a period ending Jul 31, 2027 | CTAU Corgi U.S. Equities 30% Structured Buffer ETF - August Series Absorbs the first 30% of loss on SPY and caps the gain at 15.0%, over a period ending Jul 31, 2027 | |
|---|---|---|
| Issuer | AllianzIM | Corgi |
| Reference index | SPY | SPY |
| Buffer | 15% | 30% |
| Outcome period | Aug 1, 2026 to Jul 31, 2027 | Aug 1, 2026 to Jul 31, 2027 |
| Days left | 313 | 316 |
| Starting cap | uncapped | +15.0% |
| Can still gain | uncapped | not published |
| Fall before buffer | 3.1% | 0.5% |
| Protection left, index points | 15.0% of 15.0% | 30.0% of 30.0% |
| Index return this period | +3.6% | +0.5% |
| Fund return this period | +2.5% | +0.8% |
| State today | Uncapped | Open |
| Expense ratio | 0.74% | 0.30% |
| Net assets | $41m | $1m |
AUGU in plain words
This fund has no cap. It takes a share of any further rise in SPY. The fund's price can fall 3.1% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 3.5% from today's level to the point where the buffer begins. Protection left, in index points: 15.0% of the 15.0% buffer still sits below today's SPY level. 313 days remained on Sep 21, 2026. On Jul 31, 2027 the period ends and a new cap is set.
CTAU in plain words
The fund's price can fall 0.5% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 0.5% 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. 316 days remained on Sep 21, 2026.
Questions people ask
- Which resets first, AUGU or CTAU?
- AUGU ends its outcome period on Jul 31, 2027 and CTAU on Jul 31, 2027. A new cap is set the day after each.
- Which is cheaper, AUGU or CTAU?
- AUGU charges 0.74% a year and CTAU charges 0.30%, so CTAU 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, AUGU against CTAU, data as of Sep 21, 2026. https://etfiq.com/compare/buffer/augu-vs-ctau Free to use with attribution; the underlying files are at Open data.