Data as of .
ACIO vs CAOS: which moved less with stocks?
Over the year to Sep 18, 2026, CAOS moved less with the S&P 500 than ACIO: correlation −0.40 against +0.98.
ETFIQ Diversifier Score: CAOS scores higher
How much does it diversify a stock portfolio?
A percentile among the 63 alternatives ETFs with a full year. It is a position in a set, not a rating, and neither end of it is a recommendation. All alternatives ETFs ranked by it · How it is computed
One strategy, two funds
ACIO and CAOS both run a hedged equity strategy. Over the same 52 weeks to Sep 18, 2026, ACIO’s weekly returns had a correlation of +0.98 with the S&P 500 and CAOS’s −0.40. In the 22 weeks the index fell, by 1.24% a week on average, ACIO averaged −1.00% and CAOS +0.08%. Over the same weeks, ACIO finished 4.4 percentage points ahead of cash and CAOS finished 2.6 points behind cash.
Performance, window by window
| Window | Total return | vs the S&P 500 | ||
|---|---|---|---|---|
| ACIO | CAOS | ACIO | CAOS | |
| 3 months | +0.7% | +0.1% | −1.5 pts | −2.1 pts |
| 6 months | +11.2% | −0.2% | −6.9 pts | −18.2 pts |
| 1 year | +8.4% | +1.1% | −8.1 pts | −15.5 pts |
| 3 years | +52.1% | +10.5% | −26.3 pts | −67.9 pts |
| Since launch | +98.6% | +17.6% | −84.8 pts | −79.9 pts |
| ACIO Aptus Collared Investment Opportunity ETF Hedged equity fund: owns stocks and pays for protection against a fall, most often with put options | CAOS Alpha Architect Tail Risk ETF Hedged equity fund: owns stocks and pays for protection against a fall, most often with put options | |
|---|---|---|
| Issuer | Aptus | Alpha Architect |
| Strategy | Hedged equity | Hedged equity |
| Correlation with the S&P 500 | +0.98 | −0.40 |
| Beta to the S&P 500 | +0.75 | −0.04 |
| Down-week capture | 80.3% | −6.2% |
| Average week when the S&P 500 fell | −1.00% | +0.08% |
| The S&P 500 in those weeks | −1.24% | −1.24% |
| Total return, same 52 weeks | +8.1% | +1.1% |
| Against T-bills, percentage points | +4.4 pts | −2.6 pts |
| Expense ratio | 0.79% | 0.63% |
| Listed | Jul 10, 2019 | Mar 6, 2023 |
| Net assets | $2.3bn | $705m |
ACIO in plain words
ACIO is a hedged equity fund. ETFIQ measures what every alternatives fund is sold on: whether it moves differently from the stock market. Over the year to Sep 18, 2026, its weekly returns had a correlation of +0.98 with the S&P 500’s and a beta of +0.75, so for each 1% the index moved it moved about 0.75% the same way. The S&P 500 fell in 22 of those 52 weeks, by 1.24% on average. In the same weeks ACIO fell 1.00% on average, a down-week capture of 80.3%. Over the same 52 weeks ACIO returned +8.1% and a Treasury bill fund +3.6%, so it finished 4.4 percentage points ahead of cash.
CAOS in plain words
CAOS is a hedged equity fund. Over the year to Sep 18, 2026, its weekly returns had a correlation of −0.40 with the S&P 500’s and a beta of −0.04, so for each 1% the index moved it moved about 0.04% the other way. In the same weeks CAOS rose 0.08% on average, a down-week capture of −6.2%. Over the same 52 weeks CAOS returned +1.1% and a Treasury bill fund +3.6%, so it finished 2.6 percentage points behind cash.
Questions people ask
- Which moved less with the S&P 500, ACIO or CAOS?
- Over the 52 weeks to Sep 18, 2026, ACIO’s weekly returns had a correlation of +0.98 with the S&P 500 and CAOS’s −0.40, so CAOS moved less with the index.
- Which did better when the S&P 500 fell, ACIO or CAOS?
- In the 22 weeks the S&P 500 fell, by 1.24% a week on average, ACIO averaged −1.00% and CAOS +0.08%, so CAOS returned more in those weeks.
- Which earned more than cash, ACIO or CAOS?
- Over the same weeks, ACIO finished 4.4 percentage points ahead of cash and CAOS finished 2.6 percentage points behind cash. Cash here is BIL, a fund of Treasury bills.
- Which is cheaper, ACIO or CAOS?
- ACIO charges 0.79% a year and CAOS charges 0.63%, so CAOS 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, ACIO against CAOS, data as of Sep 18, 2026. https://etfiq.com/compare/alternatives/acio-vs-caos Free to use with attribution; the underlying files are at Open data.