Westlake (WLK) Invested Capital (2010 - 2026)

Westlake's Invested Capital history runs 17 years deep, the most recent figure standing at $14.6 billion for Q1 2026.

• In Q1 2026, Invested Capital fell 5.75% year-over-year to $14.6 billion; the TTM figure through Mar 2026 stood at $14.6 billion (down 5.75% YoY), while the FY2025 annual figure was $14.4 billion, down 7.88% from the prior year.
• Invested Capital was $14.6 billion for Q1 2026 at Westlake, up from $14.4 billion in the prior quarter.
• In the past five years, Invested Capital ranged from a high of $16.2 billion in Q3 2023 to a low of $14.1 billion in Q3 2025.
• Historically, Invested Capital has averaged $15.3 billion across 5 years, with a median of $15.5 billion in 2025.
• The sharpest annual moves came in 2022 and 2025: Invested Capital jumped 38.73% in 2022, then fell 10.88% in 2025.
• A 5-year view of Invested Capital shows it stood at $15.3 billion in 2022, then increased by 2.12% to $15.7 billion in 2023, then fell by 0.41% to $15.6 billion in 2024, then slipped by 7.88% to $14.4 billion in 2025, then increased by 1.7% to $14.6 billion in 2026.
• The last three Invested Capital figures came in at $14.6 billion (Q1 2026), $14.4 billion (Q4 2025), and $14.1 billion (Q3 2025), per Business Quant data.