CR vs SPOK: Correlation
How closely do Crane Company (CR) and Spok Holdings, Inc. (SPOK) trade together? Their weekly returns over three years give a correlation of 0.40, which is moderate.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are CR and SPOK?
On 3 years of weekly data the CR/SPOK correlation comes out at 0.40, moderate. The link has loosened recently: the 1-year correlation (0.23) runs below the 3-year figure (0.40). The 5-year figure is n/a, and annualized covariance runs at 331.5 %².
Among the 17 assets we track against CR, SPOK sits near the bottom by co-movement, at rank #13. Their recent paths diverged sharply: over the last 12 months CR outperformed by 43.3 percentage points (+8.4% for CR against -34.9% for SPOK).
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.
CR vs SPOK: side by side
| CR (Crane Company) | SPOK (Spok Holdings, Inc.) | |
|---|---|---|
| 1-year return | +8.4% | -34.9% |
| 5-year return | n/a | +119.7% |
| Volatility (ann.) | 31.2% | 26.9% |
| Beta vs S&P 500 | 1.13 | 0.60 |
| Max drawdown (3Y) | -28.0% | -39.9% |
| Market cap | $12.1B | $0.2B |
| P/E (trailing) | 36.6 | 18.2 |
| Dividend yield | 0.46% | 12.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | CR | SPOK |
|---|---|---|
| 2022 | – | +2.9% |
| 2023 | – | +108.0% |
| 2024 | +29.2% | +12.1% |
| 2025 | +22.2% | -10.9% |
| 2026 | +13.6% | -14.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are CR and SPOK good diversifiers for each other?
A fair diversifier. At 0.40, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
FAQ
What is the correlation between CR and SPOK?
Using weekly returns as of 2026-08-27: 0.40 over 3 years, with 0.23 over the last year and n/a over 5 years.
Is SPOK a good diversifier for CR?
A fair diversifier. At 0.40, enough of each asset's movement is its own that the pair has smoothed outcomes historically.
What does a correlation of 0.40 mean?
A reading of 0.40 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/cr-vs-spok.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/cr-vs-spok/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: CR correlations · SPOK correlations
