IOSP vs SGC: Correlation
Measured on weekly returns over the past three years, Innospec Inc. (IOSP) and Superior Group of Companies, Inc. (SGC) carry a correlation of 0.62, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are IOSP and SGC?
Over the past 3 years, IOSP and SGC moved with a correlation of 0.62, which is strong. Little has changed lately, as the 1-year reading of 0.53 lands near the 3-year figure. Over 5 years the correlation is 0.46, and the annualized covariance of weekly returns is 734.4 %².
By 3-year correlation, SGC places #10 of the 35 assets tracked against IOSP. Correlation aside, the last 12 months split them widely, with IOSP ahead by 16.5 points (+11.3% versus -5.2%). Risk is not evenly split, since SGC carries 1.7 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.
IOSP vs SGC: side by side
| IOSP (Innospec Inc.) | SGC (Superior Group of Companies, Inc.) | |
|---|---|---|
| 1-year return | +11.3% | -5.2% |
| 5-year return | +10.2% | -35.8% |
| Volatility (ann.) | 26.6% | 44.5% |
| Beta vs S&P 500 | 0.94 | 1.20 |
| Max drawdown (3Y) | -48.4% | -58.1% |
| Market cap | $2.3B | $0.2B |
| P/E (trailing) | 19.5 | 22.5 |
| Dividend yield | 1.87% | 4.52% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | IOSP | SGC |
|---|---|---|
| 2022 | +15.2% | -52.4% |
| 2023 | +21.5% | +42.3% |
| 2024 | -9.6% | +26.9% |
| 2025 | -28.9% | -38.4% |
| 2026 | +26.0% | +30.3% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are IOSP and SGC good diversifiers for each other?
Somewhat, no more. With 0.62 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between IOSP and SGC?
As of 2026-08-27, the correlation of weekly returns between IOSP and SGC is 0.62 over 3 years, 0.53 over 1 year and 0.46 over 5 years.
Is SGC a good diversifier for IOSP?
Somewhat, no more. With 0.62 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.62 mean?
Correlation ranges from −1 to +1. Values near +1 mean two assets move together, near 0 that they move independently, and negative values that they tend to move in opposite directions. It measures co-movement, not performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/iosp-vs-sgc.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/iosp-vs-sgc/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: IOSP correlations · SGC correlations
