MLI vs. WLK

Last updated Apr 2, 2026

Compare and contrast key facts about Mueller Industries, Inc. (MLI) and Westlake Corporation (WLK).

Performance

MLI vs. WLK - Performance Comparison

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

MLI vs. WLK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MLI Mueller Industries, Inc.	-1.67%	46.29%	70.51%	62.38%	1.05%	70.95%	12.30%	37.79%	-33.10%	-2.76%
WLK Westlake Corporation	58.45%	-33.77%	-16.90%	38.23%	6.81%	20.53%	18.52%	7.72%	-37.27%	92.39%

Fundamentals

EPS MLI : $10.35 WLK : -$11.74
PS Ratio MLI : 1.99 WLK : 1.34
Total Revenue (TTM) MLI : $4.18B WLK : $11.17B
Gross Profit (TTM) MLI : $935.96M WLK : $289.00M
EBITDA (TTM) MLI : $998.96M WLK : -$248.00M

Returns By Period

In the year-to-date period, MLI achieves a -1.67% return, which is significantly lower than WLK's 58.45% return. Over the past 10 years, MLI has outperformed WLK with an annualized return of 25.08%, while WLK has yielded a comparatively lower 11.04% annualized return.

MLI

• 1D: 1.56%
• 1M: -5.19%
• YTD: -1.67%
• 6M: 13.19%
• 1Y: 46.80%
• 3Y*: 47.12%
• 5Y*: 41.59%
• 10Y*: 25.08%

WLK

• 1D: -0.21%
• 1M: 9.71%
• YTD: 58.45%
• 6M: 53.98%
• 1Y: 19.76%
• 3Y*: 2.05%
• 5Y*: 6.64%
• 10Y*: 11.04%

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

Return for Risk

MLI vs. WLK — Risk / Return Rank

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

MLI

MLI Risk / Return Rank: 80
MLI Sharpe Ratio Rank: 84
MLI Sortino Ratio Rank: 78
MLI Omega Ratio Rank: 80
MLI Calmar Ratio Rank: 78
MLI Martin Ratio Rank: 81

WLK

WLK Risk / Return Rank: 52
WLK Sharpe Ratio Rank: 54
WLK Sortino Ratio Rank: 52
WLK Omega Ratio Rank: 49
WLK Calmar Ratio Rank: 52
WLK Martin Ratio Rank: 51

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.

MLI vs. WLK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Mueller Industries, Inc. (MLI) and Westlake Corporation (WLK). 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.

	MLI	WLK	Difference
Sharpe ratio Return per unit of total volatility	1.56	0.39	+1.17
Sortino ratio Return per unit of downside risk	2.05	0.95	+1.11
Omega ratio Gain probability vs. loss probability	1.30	1.11	+0.19
Calmar ratio Return relative to maximum drawdown	2.21	0.45	+1.77
Martin ratio Return relative to average drawdown	6.37	0.93	+5.43
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MLI vs. WLK - Sharpe Ratio Comparison

The current MLI Sharpe Ratio is 1.56, which is higher than the WLK Sharpe Ratio of 0.39. The chart below compares the historical Sharpe Ratios of MLI and WLK, 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

	MLI	WLK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.56	0.39	+1.17
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.29	0.18	+1.11
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.71	0.28	+0.43
Sharpe Ratio (All Time) Calculated using the full available price history	0.47	0.36	+0.11

Correlation

The correlation between MLI and WLK is 0.53, 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

MLI vs. WLK - Dividend Comparison

MLI's dividend yield for the trailing twelve months is around 0.98%, less than WLK's 1.81% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MLI Mueller Industries, Inc.	0.98%	0.87%	1.01%	1.27%	1.69%	0.88%	1.14%	1.26%	1.71%	9.60%	0.94%	1.11%
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%

Drawdowns

MLI vs. WLK - Drawdown Comparison

The maximum MLI drawdown since its inception was -61.72%, smaller than the maximum WLK drawdown of -75.16%. Use the drawdown chart below to compare losses from any high point for MLI and WLK.

Drawdown Indicators

	MLI	WLK	Difference
Max Drawdown Largest peak-to-trough decline	-61.72%	-75.16%	+13.44%
Max Drawdown (1Y) Largest decline over 1 year	-22.33%	-44.01%	+21.68%
Max Drawdown (5Y) Largest decline over 5 years	-27.79%	-64.20%	+36.41%
Max Drawdown (10Y) Largest decline over 10 years	-52.95%	-75.16%	+22.21%
Current Drawdown Current decline from peak	-18.89%	-24.95%	+6.06%
Average Drawdown Average peak-to-trough decline	-16.10%	-26.14%	+10.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.77%	21.13%	-13.36%

Volatility

MLI vs. WLK - Volatility Comparison

The current volatility for Mueller Industries, Inc. (MLI) is 6.52%, while Westlake Corporation (WLK) has a volatility of 11.70%. This indicates that MLI experiences smaller price fluctuations and is considered to be less risky than WLK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MLI	WLK	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.52%	11.70%	-5.18%
Volatility (6M) Calculated over the trailing 6-month period	20.68%	33.79%	-13.11%
Volatility (1Y) Calculated over the trailing 1-year period	30.15%	51.27%	-21.12%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	32.38%	36.63%	-4.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	35.44%	39.28%	-3.84%

Financials

MLI vs. WLK - Profitability Comparison

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

MLI - Gross Margin

Gross margin is calculated as gross profit divided by revenue. For the three months ending on Apr 2026, Mueller Industries, Inc. reported a gross profit of 0.00 and revenue of 962.39M. Therefore, the gross margin over that period was 0.0%.

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%.

MLI - Operating Margin

Operating margin is calculated as operating income divided by revenue. For the three months ending on Apr 2026, Mueller Industries, Inc. reported an operating income of 198.77M and revenue of 962.39M, resulting in an operating margin of 20.7%.

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%.

MLI - Net Margin

Net margin is calculated as net income divided by revenue. For the three months ending on Apr 2026, Mueller Industries, Inc. reported a net income of 153.71M and revenue of 962.39M, resulting in a net margin of 16.0%.

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%.