CLB vs RES: Correlation
Measured on weekly returns over the past three years, Core Laboratories Inc. (CLB) and RPC, Inc. (RES) carry a correlation of 0.64, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CLB and RES?
On 3 years of weekly data the CLB/RES correlation comes out at 0.64, strong. The past 12 months show a weaker link (0.52) than the 3-year average (0.64). The 5-year figure is 0.66, and annualized covariance runs at 1500.4 %².
By 3-year correlation, RES places #4 of the 15 assets tracked against CLB. Correlation aside, the last 12 months split them widely, with RES ahead by 29.9 points (+10.6% versus +40.5%).
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.
CLB vs RES: side by side
| CLB (Core Laboratories Inc.) | RES (RPC, Inc.) | |
|---|---|---|
| 1-year return | +10.6% | +40.5% |
| 5-year return | -55.8% | +84.8% |
| Volatility (ann.) | 53.1% | 44.2% |
| Beta vs S&P 500 | 0.91 | 0.56 |
| Max drawdown (3Y) | -62.5% | -51.9% |
| Market cap | $0.6B | $1.4B |
| P/E (trailing) | 23.2 | 58.2 |
| Dividend yield | 0.33% | 2.61% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CLB | RES |
|---|---|---|
| 2022 | -9.0% | +96.7% |
| 2023 | -12.7% | -16.4% |
| 2024 | -1.8% | -16.4% |
| 2025 | -7.1% | -5.5% |
| 2026 | -23.2% | +20.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CLB and RES good diversifiers for each other?
To a limited degree. At 0.64 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
FAQ
What is the correlation between CLB and RES?
Using weekly returns as of 2026-08-27: 0.64 over 3 years, with 0.52 over the last year and 0.66 over 5 years.
Is RES a good diversifier for CLB?
To a limited degree. At 0.64 the two still catch most of the same waves, so the pair smooths returns a little without insulating either from a shared selloff.
What does a correlation of 0.64 mean?
A reading of 0.64 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/clb-vs-res.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/clb-vs-res/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: CLB correlations · RES correlations
