RHI vs SPSC: Correlation
Measured on weekly returns over the past three years, Robert Half Inc. (RHI) and SPS Commerce, Inc. (SPSC) carry a correlation of 0.54, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RHI and SPSC?
On 3 years of weekly data the RHI/SPSC correlation comes out at 0.54, moderate. The relationship has been stable: the 1-year correlation (0.58) sits close to the 3-year figure. The 5-year figure is 0.50, and annualized covariance runs at 975.7 %².
Among the 10 assets we track against RHI, SPSC ranks #5 by 3-year correlation. The last year tells two different stories: RHI led by 57.9 percentage points, +32.5% for RHI against -25.4% for SPSC.
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.
RHI vs SPSC: side by side
| RHI (Robert Half Inc.) | SPSC (SPS Commerce, Inc.) | |
|---|---|---|
| 1-year return | +32.5% | -25.4% |
| 5-year return | -47.2% | -38.6% |
| Volatility (ann.) | 41.2% | 44.2% |
| Beta vs S&P 500 | 0.95 | 1.10 |
| Max drawdown (3Y) | -72.2% | -76.8% |
| Market cap | $4.6B | $3.0B |
| P/E (trailing) | 38.8 | 40.5 |
| Dividend yield | 5.30% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | RHI | SPSC |
|---|---|---|
| 2022 | -32.5% | -9.8% |
| 2023 | +22.1% | +50.9% |
| 2024 | -17.4% | -5.1% |
| 2025 | -59.1% | -51.6% |
| 2026 | +75.9% | -5.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RHI and SPSC good diversifiers for each other?
To a limited degree. At 0.54 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 RHI and SPSC?
Using weekly returns as of 2026-08-27: 0.54 over 3 years, with 0.58 over the last year and 0.50 over 5 years.
Is SPSC a good diversifier for RHI?
To a limited degree. At 0.54 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 0.54 mean?
A reading of 0.54 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/rhi-vs-spsc.json
Embed this badge (it refreshes with the data), with attribution:
[](https://www.pairbook.io/pair/rhi-vs-spsc/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: RHI correlations · SPSC correlations
