ECBK vs PCB: Correlation
How closely do ECB Bancorp, Inc. (ECBK) and PCB Bancorp (PCB) trade together? Their weekly returns over three years give a correlation of 0.49, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ECBK and PCB?
Across a 3-year window, the weekly returns of ECBK and PCB correlate at 0.49, moderate. The link has tightened recently: the 1-year correlation (0.66) runs above the 3-year figure (0.49). Stretching to 5 years gives 0.48, with an annualized covariance of 303.6 %².
Few assets follow ECBK as closely as PCB, which ranks #3 of 11 tracked partners. The trailing year gives PCB the advantage: +20.9% versus +29.1%, a 8.2-point spread.
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.
ECBK vs PCB: side by side
| ECBK (ECB Bancorp, Inc.) | PCB (PCB Bancorp) | |
|---|---|---|
| 1-year return | +20.9% | +29.1% |
| 5-year return | n/a | +74.8% |
| Volatility (ann.) | 23.4% | 26.3% |
| Beta vs S&P 500 | 0.45 | 0.69 |
| Max drawdown (3Y) | -19.7% | -22.8% |
| Market cap | $0.2B | $0.4B |
| P/E (trailing) | 14.8 | 9.5 |
| Dividend yield | 0.00% | 3.04% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ECBK | PCB |
|---|---|---|
| 2022 | – | -17.0% |
| 2023 | -21.7% | +8.9% |
| 2024 | +18.2% | +14.6% |
| 2025 | +17.2% | +11.2% |
| 2026 | +19.2% | +30.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ECBK and PCB good diversifiers for each other?
Reasonably. At 0.49, ECBK and PCB keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between ECBK and PCB?
Using weekly returns as of 2026-08-27: 0.49 over 3 years, with 0.66 over the last year and 0.48 over 5 years.
Is PCB a good diversifier for ECBK?
Reasonably. At 0.49, ECBK and PCB keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.49 mean?
On the −1 to +1 scale, 0.49 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/ecbk-vs-pcb.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/ecbk-vs-pcb/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: ECBK correlations · PCB correlations
