Westlake - 21 Year Stock Price History | WLK

The latest closing stock price for Westlake as of July 23, 2025 is 87.31.

  • An investor who bought $1,000 worth of Westlake stock at the IPO in 2004 would have $14,715 today, roughly 15 times their original investment - a 14.02% compound annual growth rate over 21 years.
  • The all-time high Westlake stock closing price was 158.51 on April 09, 2024.
  • The Westlake 52-week high stock price is 153.34, which is 75.6% above the current share price.
  • The Westlake 52-week low stock price is 68.55, which is 21.5% below the current share price.
  • The average Westlake stock price for the last 52 weeks is 112.82.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.

Westlake - 21 Year Stock Price History | WLK

  • An investor who bought $1,000 worth of Westlake stock at the IPO in 2004 would have $14,715 today, roughly 15 times their original investment - a 14.02% compound annual growth rate over 21 years.
  • The all-time high Westlake stock closing price was 158.51 on April 09, 2024.
  • The Westlake 52-week high stock price is 153.34, which is 75.6% above the current share price.
  • The Westlake 52-week low stock price is 68.55, which is 21.5% below the current share price.
  • The average Westlake stock price for the last 52 weeks is 112.82.
For more information on how our historical price data is adjusted see the Stock Price Adjustment Guide.