RDIB vs SFBC: Correlation
Reading International Inc - Class B Voting (RDIB) and Sound Financial Bancorp, Inc. (SFBC) show a negative relationship: their 3-year correlation of weekly returns is -0.19.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RDIB and SFBC?
On 3 years of weekly data the RDIB/SFBC correlation comes out at -0.19, negative, meaning they tend to move in opposite directions. The relationship has been stable: the 1-year correlation (-0.16) sits close to the 3-year figure. The 5-year figure is -0.17, and annualized covariance runs at -355.3 %².
Among the 10 assets we track against RDIB, SFBC sits near the bottom by co-movement, at rank #9. On 12-month performance RDIB holds a 12.4-point edge, +12.8% against +0.4%. One caveat on sizing: RDIB is 3.7 times as volatile as the other leg, so an equal-dollar split is far from equal-risk.
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.
RDIB vs SFBC: side by side
| RDIB (Reading International Inc - Class B Voting) | SFBC (Sound Financial Bancorp, Inc.) | |
|---|---|---|
| 1-year return | +12.8% | +0.4% |
| 5-year return | -35.9% | +19.0% |
| Volatility (ann.) | 83.4% | 22.4% |
| Beta vs S&P 500 | 0.58 | 0.17 |
| Max drawdown (3Y) | -72.8% | -24.7% |
| Market cap | $0.4B | $0.1B |
| P/E (trailing) | – | 15.2 |
| Dividend yield | 0.00% | 1.69% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | RDIB | SFBC |
|---|---|---|
| 2022 | -14.5% | -9.0% |
| 2023 | -29.1% | +1.3% |
| 2024 | -39.6% | +37.4% |
| 2025 | +36.5% | -15.8% |
| 2026 | +32.8% | +10.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RDIB and SFBC good diversifiers for each other?
By historical standards, yes. A correlation of -0.19 means the two rarely move for the same reasons.
FAQ
What is the correlation between RDIB and SFBC?
As of 2026-08-27, the correlation of weekly returns between RDIB and SFBC is -0.19 over 3 years, -0.16 over 1 year and -0.17 over 5 years.
Is SFBC a good diversifier for RDIB?
By historical standards, yes. A correlation of -0.19 means the two rarely move for the same reasons.
What does a correlation of -0.19 mean?
A reading of -0.19 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: RDIB correlations · SFBC correlations
