ACHC vs SIEB: Correlation
Measured on weekly returns over the past three years, Acadia Healthcare Company, Inc. (ACHC) and Siebert Financial Corp. (SIEB) carry a correlation of -0.18, a negative link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ACHC and SIEB?
Over the past 3 years, ACHC and SIEB moved with a correlation of -0.18, which is negative, meaning they tend to move in opposite directions. Little has changed lately, as the 1-year reading of -0.26 lands near the 3-year figure. Over 5 years the correlation is -0.12, and the annualized covariance of weekly returns is -601.3 %².
Among the 10 assets we track against ACHC, SIEB sits near the bottom by co-movement, at rank #9. The last year tells two different stories: ACHC led by 64.8 percentage points, +36.2% for ACHC against -28.6% for SIEB.
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 SIEB: side by side
| ACHC (Acadia Healthcare Company, Inc.) | SIEB (Siebert Financial Corp.) | |
|---|---|---|
| 1-year return | +36.2% | -28.6% |
| 5-year return | -54.4% | -48.4% |
| Volatility (ann.) | 58.4% | 56.9% |
| Beta vs S&P 500 | 0.62 | 0.90 |
| Max drawdown (3Y) | -86.6% | -70.6% |
| Market cap | $2.8B | $0.1B |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ACHC | SIEB |
|---|---|---|
| 2022 | +35.6% | -41.4% |
| 2023 | -5.5% | +23.5% |
| 2024 | -49.0% | +88.1% |
| 2025 | -64.2% | +11.1% |
| 2026 | +113.0% | -43.9% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ACHC and SIEB good diversifiers for each other?
By historical standards, yes. A correlation of -0.18 means the two rarely move for the same reasons.
FAQ
What is the correlation between ACHC and SIEB?
Using weekly returns as of 2026-08-27: -0.18 over 3 years, with -0.26 over the last year and -0.12 over 5 years.
Is SIEB a good diversifier for ACHC?
By historical standards, yes. A correlation of -0.18 means the two rarely move for the same reasons.
What does a correlation of -0.18 mean?
A reading of -0.18 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/achc-vs-sieb.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/achc-vs-sieb/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ACHC correlations · SIEB correlations
