Westlake Chemical Partners LP - 12 Year Stock Price History | WLKP

Historical daily share price chart and data for Westlake Chemical Partners LP since 2014 adjusted for splits and dividends. The latest closing stock price for Westlake Chemical Partners LP as of September 15, 2026 is 21.48.
  • The all-time high Westlake Chemical Partners LP stock closing price was 22.83 on June 12, 2026.
  • The Westlake Chemical Partners LP 52-week high stock price is 23.88, which is 11.2% above the current share price.
  • The Westlake Chemical Partners LP 52-week low stock price is 17.75, which is 17.4% below the current share price.
  • The average Westlake Chemical Partners LP stock price for the last 52 weeks is 21.30.
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Westlake Chemical Partners LP Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2026 21.3391 17.7787 22.8319 17.7787 21.4800 20.50%
2025 19.6228 19.7972 21.4326 16.7654 17.8256 -10.50%
2024 18.6925 17.1631 20.7440 17.1631 19.9177 16.21%
2023 16.9974 16.5237 18.9134 15.6538 17.1394 0.11%
2022 17.5612 17.4596 20.1064 14.2295 17.1211 -5.77%
2021 16.5401 14.1756 18.1699 13.5027 18.1699 21.19%
2020 11.9051 14.5352 14.9932 6.0220 14.9932 -0.83%
2019 12.5994 12.3417 15.1189 11.7806 15.1189 18.54%
2018 12.1862 12.3660 14.1856 10.8565 12.7540 3.55%
2017 11.4472 10.0205 12.3167 9.6020 12.3167 22.35%
2016 9.3560 9.2962 10.9276 7.2677 10.0670 4.09%
2015 9.3743 11.4753 12.0895 6.7934 9.6712 -19.15%
Sector Industry Market Cap Revenue
Basic Materials Chemicals - Specialty $0.757B $1.167B
Westlake Chemical Partners LP is a manufacturer and supplier of petrochemicals, vinyls, polymers and building products. It focuses on offering ethylene co-products, including propylene, crude butadiene, pyrolysis gasoline, and hydrogen. Its offerings are used for a wide variety of consumer and industrial products, including food packaging, automotive products, coatings, pipes and residential construction materials. Westlake Chemical Partners LP is headquartered in Houston, Texas.
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