ASB vs IOSP: Correlation
Measured on weekly returns over the past three years, Associated Banc-Corp (ASB) and Innospec Inc. (IOSP) carry a correlation of 0.70, a strong link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are ASB and IOSP?
On 3 years of weekly data the ASB/IOSP correlation comes out at 0.70, strong. Lately the two have drifted apart, with the 1-year correlation at 0.59 versus 0.70 over 3 years. The 5-year figure is 0.63, and annualized covariance runs at 541.7 %².
Within ASB's tracked universe of 47 assets, IOSP comes in at #30 by 3-year correlation. The trailing year gives ASB the advantage: +18.5% versus +11.3%, a 7.2-point spread.
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.
ASB vs IOSP: side by side
| ASB (Associated Banc-Corp) | IOSP (Innospec Inc.) | |
|---|---|---|
| 1-year return | +18.5% | +11.3% |
| 5-year return | +82.7% | +10.2% |
| Volatility (ann.) | 29.0% | 26.6% |
| Beta vs S&P 500 | 1.03 | 0.94 |
| Max drawdown (3Y) | -31.6% | -48.4% |
| Market cap | $5.8B | $2.3B |
| P/E (trailing) | 10.8 | 19.5 |
| Dividend yield | 3.08% | 1.87% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | ASB | IOSP |
|---|---|---|
| 2022 | +6.0% | +15.2% |
| 2023 | -2.9% | +21.5% |
| 2024 | +16.2% | -9.6% |
| 2025 | +11.8% | -28.9% |
| 2026 | +21.7% | +26.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are ASB and IOSP good diversifiers for each other?
Somewhat, no more. With 0.70 correlation, most large moves hit both names, and the diversification benefit stays modest.
FAQ
What is the correlation between ASB and IOSP?
As of 2026-08-27, the correlation of weekly returns between ASB and IOSP is 0.70 over 3 years, 0.59 over 1 year and 0.63 over 5 years.
Is IOSP a good diversifier for ASB?
Somewhat, no more. With 0.70 correlation, most large moves hit both names, and the diversification benefit stays modest.
What does a correlation of 0.70 mean?
A reading of 0.70 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/asb-vs-iosp.json
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Related comparisons
Hubs: ASB correlations · IOSP correlations
