WLK vs. OLN

Last updated Apr 1, 2026

Compare and contrast key facts about Westlake Corporation (WLK) and Olin Corporation (OLN).

Performance

WLK vs. OLN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Westlake Corporation (WLK) and Olin Corporation (OLN). The values are adjusted to include any dividend payments, if applicable.

WLK vs. OLN - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WLK Westlake Corporation	58.78%	-33.77%	-16.90%	38.23%	6.81%	20.53%	18.52%	7.72%	-37.27%	92.39%
OLN Olin Corporation	43.86%	-36.15%	-36.29%	3.46%	-6.63%	138.55%	50.81%	-10.77%	-41.88%	42.51%

Fundamentals

Market Cap WLK : $15.06B OLN : $3.39B
EPS WLK : -$11.74 OLN : -$0.37
PS Ratio WLK : 1.34 OLN : 0.50
PB Ratio WLK : 1.71 OLN : 1.76
Total Revenue (TTM) WLK : $11.17B OLN : $6.78B
Gross Profit (TTM) WLK : $289.00M OLN : $470.20M
EBITDA (TTM) WLK : -$248.00M OLN : $589.90M

Returns By Period

In the year-to-date period, WLK achieves a 58.78% return, which is significantly higher than OLN's 43.86% return. Over the past 10 years, WLK has outperformed OLN with an annualized return of 11.06%, while OLN has yielded a comparatively lower 8.48% annualized return.

WLK

• 1D: 0.71%
• 1M: 11.41%
• YTD: 58.78%
• 6M: 53.70%
• 1Y: 19.95%
• 3Y*: 2.12%
• 5Y*: 6.68%
• 10Y*: 11.06%

OLN

• 1D: 2.94%
• 1M: 18.12%
• YTD: 43.86%
• 6M: 21.08%
• 1Y: 27.06%
• 3Y*: -16.82%
• 5Y*: -3.47%
• 10Y*: 8.48%

*Multi-year figures are annualized to reflect compound growth (CAGR)

Return for Risk

WLK vs. OLN — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

WLK

WLK Risk / Return Rank: 54
WLK Sharpe Ratio Rank: 56
WLK Sortino Ratio Rank: 55
WLK Omega Ratio Rank: 52
WLK Calmar Ratio Rank: 53
WLK Martin Ratio Rank: 53

OLN

OLN Risk / Return Rank: 58
OLN Sharpe Ratio Rank: 57
OLN Sortino Ratio Rank: 58
OLN Omega Ratio Rank: 55
OLN Calmar Ratio Rank: 61
OLN Martin Ratio Rank: 58

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

WLK vs. OLN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Westlake Corporation (WLK) and Olin Corporation (OLN). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	WLK	OLN	Difference
Sharpe ratio Return per unit of total volatility	0.39	0.43	-0.04
Sortino ratio Return per unit of downside risk	0.95	1.06	-0.11
Omega ratio Gain probability vs. loss probability	1.11	1.13	-0.02
Calmar ratio Return relative to maximum drawdown	0.48	0.81	-0.33
Martin ratio Return relative to average drawdown	1.00	1.61	-0.62
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WLK vs. OLN - Sharpe Ratio Comparison

The current WLK Sharpe Ratio is 0.39, which is comparable to the OLN Sharpe Ratio of 0.43. The chart below compares the historical Sharpe Ratios of WLK and OLN, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	WLK	OLN	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.39	0.43	-0.04
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.18	-0.08	+0.26
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.28	0.18	+0.10
Sharpe Ratio (All Time) Calculated using the full available price history	0.36	0.15	+0.21

Correlation

The correlation between WLK and OLN is 0.63, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

WLK vs. OLN - Dividend Comparison

WLK's dividend yield for the trailing twelve months is around 1.81%, less than OLN's 2.69% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
WLK Westlake Corporation	1.81%	2.85%	1.79%	1.12%	1.28%	1.17%	1.31%	1.46%	1.39%	0.75%	1.33%	1.28%
OLN Olin Corporation	2.69%	3.84%	2.37%	1.48%	1.51%	1.39%	3.26%	4.64%	3.98%	2.25%	3.12%	4.63%

Drawdowns

WLK vs. OLN - Drawdown Comparison

The maximum WLK drawdown since its inception was -75.16%, roughly equal to the maximum OLN drawdown of -73.80%. Use the drawdown chart below to compare losses from any high point for WLK and OLN.

Drawdown Indicators

	WLK	OLN	Difference
Max Drawdown Largest peak-to-trough decline	-75.16%	-73.80%	-1.36%
Max Drawdown (1Y) Largest decline over 1 year	-44.01%	-31.45%	-12.56%
Max Drawdown (5Y) Largest decline over 5 years	-64.20%	-71.87%	+7.67%
Max Drawdown (10Y) Largest decline over 10 years	-75.16%	-73.80%	-1.36%
Current Drawdown Current decline from peak	-24.80%	-51.76%	+26.96%
Average Drawdown Average peak-to-trough decline	-26.14%	-24.81%	-1.33%
Ulcer Index Depth and duration of drawdowns from previous peaks	21.13%	15.72%	+5.41%

Volatility

WLK vs. OLN - Volatility Comparison

The current volatility for Westlake Corporation (WLK) is 12.28%, while Olin Corporation (OLN) has a volatility of 19.90%. This indicates that WLK experiences smaller price fluctuations and is considered to be less risky than OLN based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WLK	OLN	Difference
Volatility (1M) Calculated over the trailing 1-month period	12.28%	19.90%	-7.62%
Volatility (6M) Calculated over the trailing 6-month period	33.78%	43.07%	-9.29%
Volatility (1Y) Calculated over the trailing 1-year period	51.27%	63.41%	-12.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	36.65%	44.91%	-8.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	39.29%	47.03%	-7.74%

Financials

WLK vs. OLN - Profitability Comparison

The chart below illustrates the profitability comparison between Westlake Corporation and Olin Corporation over time, highlighting three key metrics: Gross Profit Margin, Operating Margin, and Net Profit Margin.

WLK - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Westlake Corporation reported a gross profit of -437.00M and revenue of 2.53B. Therefore, the gross margin over that period was -17.3%.

OLN - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Olin Corporation reported a gross profit of 0.00 and revenue of 1.67B. Therefore, the gross margin over that period was 0.0%.

WLK - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Westlake Corporation reported an operating income of -671.00M and revenue of 2.53B, resulting in an operating margin of -26.5%.

OLN - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Olin Corporation reported an operating income of 300.00K and revenue of 1.67B, resulting in an operating margin of 0.0%.

WLK - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Westlake Corporation reported a net income of -544.00M and revenue of 2.53B, resulting in a net margin of -21.5%.

OLN - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Olin Corporation reported a net income of -85.70M and revenue of 1.67B, resulting in a net margin of -5.2%.