Westlake (WLK) Market Capitalization (2010 - 2026)

Westlake has reported Market Capitalization for 17 years, with the latest figure at $9.3 billion in Q2 2026.

• On a quarterly basis, Market Capitalization fell 4.2% year-over-year to $9.3 billion in Q2 2026; TTM through Jun 2026 was $9.3 billion, a 4.2% decrease from a year earlier, with the FY2025 full-year figure at $9.5 billion, down 35.67% from the prior year.
• Market Capitalization was $9.3 billion for Q2 2026 at Westlake, down from $15.0 billion in the prior quarter.
• The five-year high for Market Capitalization was $19.6 billion in Q1 2024, with the low at $9.3 billion in Q2 2026.
• Average Market Capitalization over 5 years is $14.2 billion, with a median of $14.8 billion recorded in 2023.
• The sharpest annual moves came in 2023 and 2025: Market Capitalization jumped 44.18% in 2023, then tumbled 48.9% in 2025.
• Over 5 years, Market Capitalization stood at $13.1 billion in 2022, then soared by 37.41% to $17.9 billion in 2023, then fell by 18.08% to $14.7 billion in 2024, then tumbled by 35.67% to $9.5 billion in 2025, then slipped by 1.36% to $9.3 billion in 2026.
• The last three Market Capitalization figures came in at $9.3 billion (Q2 2026), $15.0 billion (Q1 2026), and $9.5 billion (Q4 2025), per Business Quant data.