CORT vs PLBC: Correlation
How closely do Corcept Therapeutics Incorporated (CORT) and Plumas Bancorp (PLBC) trade together? Their weekly returns over three years give a correlation of 0.33, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CORT and PLBC?
Across a 3-year window, the weekly returns of CORT and PLBC correlate at 0.33, moderate. The relationship has been stable: the 1-year correlation (0.36) sits close to the 3-year figure. Stretching to 5 years gives 0.23, with an annualized covariance of 665.7 %².
PLBC is one of the assets that tracks CORT most closely: it ranks #2 out of the 11 assets we track against CORT. The last year tells two different stories: CORT led by 22.4 percentage points, +67.7% for CORT against +45.3% for PLBC. Risk is not evenly split, since CORT carries 2.1 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.
CORT vs PLBC: side by side
| CORT (Corcept Therapeutics Incorporated) | PLBC (Plumas Bancorp) | |
|---|---|---|
| 1-year return | +67.7% | +45.3% |
| 5-year return | +443.1% | +114.6% |
| Volatility (ann.) | 65.2% | 30.5% |
| Beta vs S&P 500 | 0.53 | 0.37 |
| Max drawdown (3Y) | -71.9% | -26.7% |
| Market cap | $12.6B | $0.4B |
| P/E (trailing) | 265.8 | 12.0 |
| Dividend yield | 0.00% | 2.06% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CORT | PLBC |
|---|---|---|
| 2022 | +2.6% | +11.7% |
| 2023 | +59.9% | +14.7% |
| 2024 | +55.1% | +17.5% |
| 2025 | -30.9% | -2.7% |
| 2026 | +236.0% | +39.4% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CORT and PLBC good diversifiers for each other?
Yes, to a useful degree: a correlation of 0.33 leaves real independence between the two, which historically damped combined volatility.
FAQ
What is the correlation between CORT and PLBC?
Using weekly returns as of 2026-08-27: 0.33 over 3 years, with 0.36 over the last year and 0.23 over 5 years.
Is PLBC a good diversifier for CORT?
Yes, to a useful degree: a correlation of 0.33 leaves real independence between the two, which historically damped combined volatility.
What does a correlation of 0.33 mean?
A reading of 0.33 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/cort-vs-plbc.json
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[](https://www.pairbook.io/pair/cort-vs-plbc/)
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Related comparisons
Hubs: CORT correlations · PLBC correlations
