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Westlake Corporation WLK

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67.91 USD -0.56 (-0.82%)

Nov 4, 2026, 2:34 PM EST

67.14 Day range 71.69
56.33 52-week range 124.23
YTD
-8.16%
1 year
+1.69%

Financial health

Altman Z-Score

1.86 Grey zone

Bankruptcy-risk model: below 1.81 distress, above 2.99 safe.

Piotroski F-Score

6 / 9 Average

Nine pass/fail tests of profitability, leverage and efficiency.

FMP rating

B-3 / 5 overall

  • DCF 5
  • Return on Equity 1
  • Return on Assets 1
  • Debt / Equity 3
  • P/E 1
  • P/B 4

Valuation

P/E -6.3×
FY 2016: 18.2×FY 2017: 10.6×FY 2018: 8.6×FY 2019: 21.5×FY 2020: 31.8×FY 2021: 6.2×FY 2022: 5.9×FY 2023: 37.6×FY 2024: 24.6×FY 2025: -6.3×
FY 2016 5y median 6.2× FY 2025
P/S 0.9×
FY 2016: 1.4×FY 2017: 1.7×FY 2018: 1.0×FY 2019: 1.1×FY 2020: 1.4×FY 2021: 1.1×FY 2022: 0.8×FY 2023: 1.4×FY 2024: 1.2×FY 2025: 0.9×
FY 2016 5y median 1.1× FY 2025
P/B 1.1×
FY 2016: 2.1×FY 2017: 2.8×FY 2018: 1.5×FY 2019: 1.5×FY 2020: 1.7×FY 2021: 1.6×FY 2022: 1.3×FY 2023: 1.7×FY 2024: 1.4×FY 2025: 1.1×
FY 2016 5y median 1.4× FY 2025
P/FCF -18.0×
FY 2016: 35.3×FY 2017: 14.3×FY 2018: 12.1×FY 2019: 17.5×FY 2020: 13.5×FY 2021: 7.2×FY 2022: 5.7×FY 2023: 13.7×FY 2024: 48.2×FY 2025: -18.0×
FY 2016 5y median 7.2× FY 2025
EV/EBITDA -51.2×
FY 2016: 10.4×FY 2017: 8.7×FY 2018: 5.0×FY 2019: 8.6×FY 2020: 10.5×FY 2021: 4.4×FY 2022: 3.9×FY 2023: 10.2×FY 2024: 7.7×FY 2025: -51.2×
FY 2016 5y median 4.4× FY 2025
EV/Sales 1.2×
FY 2016: 2.1×FY 2017: 2.0×FY 2018: 1.2×FY 2019: 1.5×FY 2020: 1.7×FY 2021: 1.4×FY 2022: 1.0×FY 2023: 1.6×FY 2024: 1.4×FY 2025: 1.2×
FY 2016 5y median 1.4× FY 2025
FCF Yield -5.6%
FY 2016: 2.8%FY 2017: 7.0%FY 2018: 8.3%FY 2019: 5.7%FY 2020: 7.4%FY 2021: 14.0%FY 2022: 17.4%FY 2023: 7.3%FY 2024: 2.1%FY 2025: -5.6%
FY 2016 5y median 7.3% FY 2025

Profitability

Gross Margin 2.6%
FY 2016: 19.4%FY 2017: 21.9%FY 2018: 23.0%FY 2019: 15.5%FY 2020: 13.6%FY 2021: 29.7%FY 2022: 25.8%FY 2023: 17.7%FY 2024: 16.1%FY 2025: 2.6%
FY 2016 5y median 17.7% FY 2025
Operating Margin -14.1%
FY 2016: 11.5%FY 2017: 15.2%FY 2018: 16.3%FY 2019: 8.1%FY 2020: 5.7%FY 2021: 23.8%FY 2022: 19.3%FY 2023: 5.8%FY 2024: 7.2%FY 2025: -14.1%
FY 2016 5y median 7.2% FY 2025
Net Margin -13.5%
FY 2016: 7.9%FY 2017: 16.2%FY 2018: 11.5%FY 2019: 5.2%FY 2020: 4.4%FY 2021: 17.1%FY 2022: 14.2%FY 2023: 3.8%FY 2024: 5.0%FY 2025: -13.5%
FY 2016 5y median 5.0% FY 2025
ROE -17.2%
FY 2016: 11.3%FY 2017: 26.8%FY 2018: 17.8%FY 2019: 7.2%FY 2020: 5.5%FY 2021: 25.3%FY 2022: 22.6%FY 2023: 4.7%FY 2024: 5.7%FY 2025: -17.2%
FY 2016 5y median 5.7% FY 2025
ROIC -7.9%
FY 2016: 4.5%FY 2017: 11.3%FY 2018: 10.5%FY 2019: 4.4%FY 2020: 3.4%FY 2021: 13.2%FY 2022: 12.9%FY 2023: 2.9%FY 2024: 3.3%FY 2025: -7.9%
FY 2016 5y median 3.3% FY 2025
ROA -7.6%
FY 2016: 3.7%FY 2017: 10.8%FY 2018: 8.6%FY 2019: 3.2%FY 2020: 2.4%FY 2021: 10.9%FY 2022: 10.9%FY 2023: 2.3%FY 2024: 2.9%FY 2025: -7.6%
FY 2016 5y median 2.9% FY 2025

Growth (YoY)

Revenue -8.0%
FY 2016: 13.7%FY 2017: 58.4%FY 2018: 7.4%FY 2019: -6.0%FY 2020: -7.6%FY 2021: 57.0%FY 2022: 34.1%FY 2023: -20.6%FY 2024: -3.2%FY 2025: -8.0%
FY 2016 FY 2025
Operating Income -280.3%
FY 2016: -39.3%FY 2017: 110.1%FY 2018: 14.9%FY 2019: -53.4%FY 2020: -34.6%FY 2021: 552.7%FY 2022: 8.9%FY 2023: -76.1%FY 2024: 20.0%FY 2025: -280.3%
FY 2016 FY 2025
EPS (diluted) -352.8%
FY 2016: -37.0%FY 2017: 226.8%FY 2018: -23.4%FY 2019: -57.6%FY 2020: -20.9%FY 2021: 506.2%FY 2022: 11.4%FY 2023: -78.7%FY 2024: 25.4%FY 2025: -352.8%
FY 2016 FY 2025
Free Cash Flow -273.2%
FY 2016: -65.0%FY 2017: 367.9%FY 2018: -26.4%FY 2019: -27.3%FY 2020: 50.2%FY 2021: 124.9%FY 2022: 31.7%FY 2023: -43.1%FY 2024: -76.5%FY 2025: -273.2%
FY 2016 FY 2025

Financial Health

Current Ratio 2.2×
FY 2016: 2.0×FY 2017: 1.8×FY 2018: 2.4×FY 2019: 2.2×FY 2020: 2.6×FY 2021: 2.2×FY 2022: 2.6×FY 2023: 2.4×FY 2024: 2.8×FY 2025: 2.2×
FY 2016 5y median 2.4× FY 2025
Quick Ratio 1.6×
FY 2016: 1.4×FY 2017: 1.3×FY 2018: 1.5×FY 2019: 1.5×FY 2020: 1.9×FY 2021: 1.6×FY 2022: 1.8×FY 2023: 1.8×FY 2024: 2.0×FY 2025: 1.6×
FY 2016 5y median 1.8× FY 2025
Debt / Equity 0.7×
FY 2016: 1.1×FY 2017: 0.8×FY 2018: 0.5×FY 2019: 0.7×FY 2020: 0.7×FY 2021: 0.7×FY 2022: 0.6×FY 2023: 0.5×FY 2024: 0.5×FY 2025: 0.7×
FY 2016 5y median 0.6× FY 2025
Net Debt / EBITDA -14.3×
FY 2016: 3.3×FY 2017: 1.3×FY 2018: 0.9×FY 2019: 2.2×FY 2020: 2.1×FY 2021: 1.0×FY 2022: 0.8×FY 2023: 1.1×FY 2024: 1.1×FY 2025: -14.3×
FY 2016 5y median 1.0× FY 2025
Interest Coverage -9.8×
FY 2016: 7.3×FY 2017: 7.7×FY 2018: 11.2×FY 2019: 5.3×FY 2020: 3.0×FY 2021: 15.9×FY 2022: 17.2×FY 2023: 4.4×FY 2024: 5.5×FY 2025: -9.8×
FY 2016 5y median 5.5× FY 2025

Dividends

Dividend Yield 2.9%
FY 2016: 1.3%FY 2017: 0.7%FY 2018: 1.4%FY 2019: 1.5%FY 2020: 1.3%FY 2021: 1.2%FY 2022: 1.3%FY 2023: 1.2%FY 2024: 1.8%FY 2025: 2.9%
FY 2016 5y median 1.3% FY 2025
Payout Ratio -18.0%
FY 2016: 24.2%FY 2017: 7.9%FY 2018: 12.0%FY 2019: 31.4%FY 2020: 41.5%FY 2021: 7.2%FY 2022: 7.5%FY 2023: 46.1%FY 2024: 43.9%FY 2025: -18.0%
FY 2016 5y median 7.5% FY 2025

Annual · latest fiscal year ends 2025-12-31