ACHC vs QQQ: Correlation
Measured on weekly returns over the past three years, Acadia Healthcare Company, Inc. (ACHC) and Invesco QQQ Trust (QQQ) carry a correlation of 0.13, a weak link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACHC and QQQ?
On 3 years of weekly data the ACHC/QQQ correlation comes out at 0.13, weak. The relationship has been stable: the 1-year correlation (0.03) sits close to the 3-year figure. The 5-year figure is 0.18, and annualized covariance runs at 143.0 %².
Out of 10 assets tracked against ACHC, QQQ lands near the bottom at #7. Over the last 12 months ACHC came out ahead by 9.9 percentage points (+36.2% against +26.3%). Risk is not evenly split, since ACHC carries 3.0 times the volatility of the other side.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
ACHC vs QQQ: side by side
| ACHC (Acadia Healthcare Company, Inc.) | QQQ (Invesco QQQ Trust) | |
|---|---|---|
| 1-year return | +36.2% | +26.3% |
| 5-year return | -54.4% | +95.4% |
| Volatility (ann.) | 58.4% | 19.6% |
| Beta vs S&P 500 | 0.62 | 1.28 |
| Max drawdown (3Y) | -86.6% | -22.8% |
| Market cap | $2.8B | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.44% |
| Expense ratio | – | 0.18% |
| Assets under management | – | $452.8B |
| Sector / category | US Listed | ETF · US Growth & Tech |
QQQ is a Large Growth fund from Invesco: $452.8B under management, 104 holdings, a 0.18% expense ratio, a 0.44% trailing dividend yield.
Year-by-year returns
| Year | ACHC | QQQ |
|---|---|---|
| 2022 | +35.6% | -32.6% |
| 2023 | -5.5% | +54.9% |
| 2024 | -49.0% | +25.6% |
| 2025 | -64.2% | +20.8% |
| 2026 | +113.0% | +17.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACHC and QQQ good diversifiers for each other?
Yes. With a correlation of 0.13, ACHC and QQQ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
FAQ
What is the correlation between ACHC and QQQ?
As of 2026-08-27, the correlation of weekly returns between ACHC and QQQ is 0.13 over 3 years, 0.03 over 1 year and 0.18 over 5 years.
Is QQQ a good diversifier for ACHC?
Yes. With a correlation of 0.13, ACHC and QQQ have moved largely independently, which makes them a genuinely diversifying pair by historical standards.
What does a correlation of 0.13 mean?
On the −1 to +1 scale, 0.13 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/achc-vs-qqq.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/achc-vs-qqq/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: ACHC correlations · QQQ correlations
