GT vs IOSP: Correlation
Measured on weekly returns over the past three years, The Goodyear Tire & Rubber Company (GT) and Innospec Inc. (IOSP) 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 GT and IOSP?
Over the past 3 years, GT and IOSP moved with a correlation of 0.54, which is moderate. The relationship has been stable: the 1-year correlation (0.56) sits close to the 3-year figure. Over 5 years the correlation is 0.41, and the annualized covariance of weekly returns is 649.1 %².
Few assets follow GT as closely as IOSP, which ranks #3 of 11 tracked partners. Correlation aside, the last 12 months split them widely, with IOSP ahead by 39.5 points (-28.2% versus +11.3%). Risk is not evenly split, since GT 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.
GT vs IOSP: side by side
| GT (The Goodyear Tire & Rubber Company) | IOSP (Innospec Inc.) | |
|---|---|---|
| 1-year return | -28.2% | +11.3% |
| 5-year return | -61.1% | +10.2% |
| Volatility (ann.) | 45.0% | 26.6% |
| Beta vs S&P 500 | 0.80 | 0.94 |
| Max drawdown (3Y) | -62.8% | -48.4% |
| Market cap | $1.8B | $2.3B |
| P/E (trailing) | – | 19.5 |
| Dividend yield | 0.00% | 1.87% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | GT | IOSP |
|---|---|---|
| 2022 | -52.4% | +15.2% |
| 2023 | +41.1% | +21.5% |
| 2024 | -37.2% | -9.6% |
| 2025 | -2.7% | -28.9% |
| 2026 | -29.8% | +26.0% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are GT and IOSP good diversifiers for each other?
Only partially. A correlation of 0.54 means GT and IOSP share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between GT and IOSP?
The GT/IOSP correlation stands at 0.54 on a 3-year window (1 year: 0.56, 5 years: 0.41), computed from weekly returns as of 2026-08-27.
Is IOSP a good diversifier for GT?
Only partially. A correlation of 0.54 means GT and IOSP share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.54 mean?
On the −1 to +1 scale, 0.54 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/gt-vs-iosp.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/gt-vs-iosp/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: GT correlations · IOSP correlations
