IOSP vs SXC: Correlation
Measured on weekly returns over the past three years, Innospec Inc. (IOSP) and SunCoke Energy, Inc. (SXC) carry a correlation of 0.56, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IOSP and SXC?
On 3 years of weekly data the IOSP/SXC correlation comes out at 0.56, moderate. Lately the two have drifted apart, with the 1-year correlation at 0.44 versus 0.56 over 3 years. The 5-year figure is 0.52, and annualized covariance runs at 603.8 %².
By 3-year correlation, SXC places #16 of the 35 assets tracked against IOSP. Their recent paths diverged sharply: over the last 12 months SXC outperformed by 34.6 percentage points (+11.3% for IOSP against +45.9% for SXC). Note the risk asymmetry: SXC runs 1.5 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
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.
IOSP vs SXC: side by side
| IOSP (Innospec Inc.) | SXC (SunCoke Energy, Inc.) | |
|---|---|---|
| 1-year return | +11.3% | +45.9% |
| 5-year return | +10.2% | +84.8% |
| Volatility (ann.) | 26.6% | 40.5% |
| Beta vs S&P 500 | 0.94 | 0.74 |
| Max drawdown (3Y) | -48.4% | -52.0% |
| Market cap | $2.3B | $0.9B |
| P/E (trailing) | 19.5 | – |
| Dividend yield | 1.87% | 4.89% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | IOSP | SXC |
|---|---|---|
| 2022 | +15.2% | +35.9% |
| 2023 | +21.5% | +29.8% |
| 2024 | -9.6% | +4.0% |
| 2025 | -28.9% | -28.6% |
| 2026 | +26.0% | +49.1% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IOSP and SXC good diversifiers for each other?
Somewhat, no more. With 0.56 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between IOSP and SXC?
The IOSP/SXC correlation stands at 0.56 on a 3-year window (1 year: 0.44, 5 years: 0.52), computed from weekly returns as of 2026-08-27.
Is SXC a good diversifier for IOSP?
Somewhat, no more. With 0.56 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.56 mean?
On the −1 to +1 scale, 0.56 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/iosp-vs-sxc.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/iosp-vs-sxc/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: IOSP correlations · SXC correlations
