OLN vs WLK: Correlation
Olin Corporation (OLN) and Westlake Corporation (WLK) show a strong relationship: their 3-year correlation of weekly returns is 0.70.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are OLN and WLK?
Across a 3-year window, the weekly returns of OLN and WLK correlate at 0.70, strong. The relationship has been stable: the 1-year correlation (0.72) sits close to the 3-year figure. Stretching to 5 years gives 0.69, with an annualized covariance of 1244.0 %².
In OLN's tracked universe of 20 assets, WLK sits right near the top at #3. Over the last 12 months WLK came out ahead by 11.5 percentage points (-23.3% against -11.8%).
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.
OLN vs WLK: side by side
| OLN (Olin Corporation) | WLK (Westlake Corporation) | |
|---|---|---|
| 1-year return | -23.3% | -11.8% |
| 5-year return | -62.2% | -8.0% |
| Volatility (ann.) | 45.4% | 39.0% |
| Beta vs S&P 500 | 1.04 | 0.82 |
| Max drawdown (3Y) | -69.3% | -64.2% |
| Market cap | – | $9.4B |
| P/E (trailing) | – | – |
| Dividend yield | 4.62% | 2.84% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | OLN | WLK |
|---|---|---|
| 2022 | -6.6% | +6.8% |
| 2023 | +3.5% | +38.4% |
| 2024 | -36.3% | -16.9% |
| 2025 | -36.2% | -33.8% |
| 2026 | -15.8% | +1.8% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are OLN and WLK good diversifiers for each other?
Only partially. A correlation of 0.70 means OLN and WLK 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 OLN and WLK?
Using weekly returns as of 2026-08-27: 0.70 over 3 years, with 0.72 over the last year and 0.69 over 5 years.
Is WLK a good diversifier for OLN?
Only partially. A correlation of 0.70 means OLN and WLK share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.70 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/oln-vs-wlk.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/oln-vs-wlk/)
The core API is free. Terms and every endpoint in the API documentation.
Related comparisons
Hubs: OLN correlations · WLK correlations
