SFBC vs SMCI: Correlation
Sound Financial Bancorp, Inc. (SFBC) and Supermicro (SMCI) show a negative relationship: their 3-year correlation of weekly returns is -0.22.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are SFBC and SMCI?
On 3 years of weekly data the SFBC/SMCI correlation comes out at -0.22, negative, meaning they tend to move in opposite directions. The link has loosened recently: the 1-year correlation (-0.41) runs below the 3-year figure (-0.22). The 5-year figure is -0.16, and annualized covariance runs at -531.2 %².
Among the 15 assets we track against SFBC, SMCI sits near the bottom by co-movement, at rank #11. The trailing year gives SFBC the advantage: +0.4% versus -14.1%, a 14.5-point spread. Note the risk asymmetry: SMCI runs 4.8 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
SFBC vs SMCI: side by side
| SFBC (Sound Financial Bancorp, Inc.) | SMCI (Supermicro) | |
|---|---|---|
| 1-year return | +0.4% | -14.1% |
| 5-year return | +19.0% | +983.4% |
| Volatility (ann.) | 22.4% | 107.1% |
| Beta vs S&P 500 | 0.17 | 3.08 |
| Max drawdown (3Y) | -24.7% | -84.8% |
| Market cap | $0.1B | $24.9B |
| P/E (trailing) | 15.2 | 11.5 |
| Dividend yield | 1.69% | 0.00% |
| Sector / category | US Listed | Information Technology |
Year-by-year returns
| Year | SFBC | SMCI |
|---|---|---|
| 2022 | -9.0% | +86.8% |
| 2023 | +1.3% | +246.2% |
| 2024 | +37.4% | +7.2% |
| 2025 | -15.8% | -4.0% |
| 2026 | +10.0% | +31.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are SFBC and SMCI good diversifiers for each other?
By historical standards, yes. A correlation of -0.22 means the two rarely move for the same reasons.
FAQ
What is the correlation between SFBC and SMCI?
Using weekly returns as of 2026-08-27: -0.22 over 3 years, with -0.41 over the last year and -0.16 over 5 years.
Is SMCI a good diversifier for SFBC?
By historical standards, yes. A correlation of -0.22 means the two rarely move for the same reasons.
What does a correlation of -0.22 mean?
On the −1 to +1 scale, -0.22 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/sfbc-vs-smci.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/sfbc-vs-smci/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: SFBC correlations · SMCI correlations
