Westlake Chemical Partners Stock Price History
NYSE: WLKPIndustrialsMajor ChemicalsUSD
21.19-0.22 (-1.03%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
WLKP price history at a glance
The price history for Westlake Chemical Partners (WLKP) on this page begins on July 28, 2014, when the stock closed at $29.25; it most recently closed at $21.19 on October 5, 2026. The highest price in this record is $34.31, reached on September 1, 2014; the latest close is 38.2% below that peak. Across the 11 complete calendar years in the table, WLKP finished higher in 4 and lower in 7. Its best year was 2017 (+15.2%) and its worst was 2015 (-20.3%).
Over roughly 12 years the share price changed -27.6%, a -2.6% compound annual price return (excluding dividends). In the last 12 months alone, WLKP has gained 0.5%. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.
Summary generated from market data by MetaCap's automated system. Methodology
Key price levels
- High since 2014
- $34.31
- Date of high
- Sep 1, 2014
- Low since 2014
- $10.31
- Date of low
- Mar 16, 2020
- 52-week high
- $23.88
- 52-week low
- $17.75
- IPO year
- 2014
- Last close
- $21.19
WLKP returns
1 week
-0.38%
1 month
-2.22%
3 months
-3.51%
6 months
-6.49%
Year to date
+11.53%
1 year
+0.52%
3 years
-1.07%
5 years
-17.10%
WLKP price return, excluding dividends.
WLKP annual returns
| Year | Year-end close | Return |
|---|---|---|
| 2026 | 21.19 | +11.82% |
| 2025 | 18.95 | -17.47% |
| 2024 | 22.96 | +6.05% |
| 2023 | 21.65 | -7.87% |
| 2022 | 23.50 | -12.51% |
| 2021 | 26.86 | +12.67% |
| 2020 | 23.84 | -3.68% |
| 2019 | 24.75 | +6.00% |
| 2018 | 23.35 | -6.41% |
| 2017 | 24.95 | +15.24% |
| 2016 | 21.65 | -2.39% |
| 2015 | 22.18 | -20.27% |
| 2014* | 27.82 | -4.89% |
* Partial year: the record begins after the start of 2014; return measured from the first available close.
2026 return is year to date.
WLKP daily prices (past year)
| Date | Open | High | Low | Close | Change |
|---|---|---|---|---|---|
| 21.38 | 21.48 | 21.15 | 21.19 | -1.03% | |
| 21.40 | 21.41 | 21.18 | 21.41 | -0.83% | |
| 21.48 | 21.70 | 21.41 | 21.59 | +0.79% | |
| 21.22 | 21.45 | 21.19 | 21.42 | +0.71% | |
| 21.46 | 21.56 | 21.07 | 21.27 | +0.05% | |
| 21.15 | 21.54 | 21.00 | 21.26 | +0.28% | |
| 21.39 | 21.55 | 21.18 | 21.20 | -1.07% | |
| 21.60 | 21.60 | 21.40 | 21.43 | -0.56% | |
| 21.70 | 21.72 | 21.52 | 21.55 | -0.23% | |
| 21.51 | 21.60 | 21.27 | 21.60 | +0.42% | |
| 21.52 | 21.56 | 21.30 | 21.51 | +0.75% | |
| 21.31 | 21.47 | 21.14 | 21.35 | -0.14% | |
| 21.37 | 21.62 | 21.27 | 21.38 | +0.42% | |
| 21.23 | 21.33 | 21.15 | 21.29 | +0.33% | |
| 21.33 | 21.36 | 21.22 | 21.22 | -0.52% | |
| 21.21 | 21.51 | 21.21 | 21.33 | +0.23% | |
| 21.30 | 21.70 | 21.25 | 21.28 | -0.93% | |
| 21.55 | 21.63 | 21.36 | 21.48 | 0.00% | |
| 21.47 | 21.93 | 21.31 | 21.48 | -0.19% | |
| 21.61 | 21.72 | 21.42 | 21.52 | +0.23% | |
| 21.75 | 21.85 | 21.44 | 21.47 | -0.92% | |
| 21.84 | 21.84 | 21.52 | 21.67 | -0.32% | |
| 21.80 | 21.90 | 21.68 | 21.74 | -0.64% | |
| 21.83 | 22.08 | 21.70 | 21.88 | -0.23% | |
| 21.85 | 22.20 | 21.80 | 21.93 | -0.81% | |
| 21.74 | 22.30 | 21.74 | 22.11 | +1.75% | |
| 21.48 | 21.87 | 21.48 | 21.73 | +0.42% | |
| 21.64 | 21.78 | 21.50 | 21.64 | +0.05% | |
| 21.95 | 21.99 | 21.52 | 21.63 | -0.46% | |
| 21.78 | 21.99 | 21.60 | 21.73 | +0.18% | |
| 21.74 | 21.86 | 21.48 | 21.69 | +0.32% | |
| 21.65 | 21.74 | 21.51 | 21.62 | +0.65% | |
| 21.57 | 21.74 | 21.39 | 21.48 | -0.37% | |
| 21.52 | 21.70 | 21.26 | 21.56 | +0.14% | |
| 21.56 | 21.75 | 21.40 | 21.53 | -0.87% | |
| 21.96 | 21.96 | 21.60 | 21.72 | +0.09% | |
| 21.52 | 21.79 | 21.52 | 21.70 | +0.18% | |
| 21.71 | 21.88 | 21.42 | 21.66 | -0.18% | |
| 21.54 | 21.75 | 21.54 | 21.70 | +0.14% | |
| 21.62 | 21.80 | 21.33 | 21.67 | -1.77% | |
| 21.55 | 22.10 | 21.52 | 22.06 | +2.27% | |
| 21.68 | 21.84 | 21.49 | 21.57 | -0.51% | |
| 21.79 | 21.88 | 21.56 | 21.68 | +0.09% | |
| 21.37 | 21.76 | 21.35 | 21.66 | +1.45% | |
| 21.26 | 21.95 | 21.26 | 21.35 | +0.38% | |
| 21.36 | 21.48 | 21.22 | 21.27 | -0.14% | |
| 21.43 | 21.60 | 20.98 | 21.30 | +0.14% | |
| 21.83 | 21.87 | 21.27 | 21.27 | -1.71% | |
| 21.91 | 21.91 | 21.27 | 21.64 | -0.41% | |
| 21.80 | 22.07 | 21.57 | 21.73 | -0.78% | |
| 22.05 | 22.20 | 21.81 | 21.90 | -0.59% | |
| 22.00 | 22.20 | 21.75 | 22.03 | +0.82% | |
| 22.16 | 22.24 | 21.72 | 21.85 | -0.91% | |
| 21.88 | 22.37 | 21.88 | 22.05 | +0.18% | |
| 21.87 | 22.25 | 21.87 | 22.01 | -0.14% | |
| 21.92 | 22.26 | 21.92 | 22.04 | +0.05% | |
| 21.91 | 22.18 | 21.79 | 22.03 | +0.14% | |
| 22.01 | 22.20 | 21.84 | 22.00 | -0.05% | |
| 21.89 | 22.20 | 21.87 | 22.01 | +1.01% | |
| 21.77 | 22.25 | 21.70 | 21.79 | -0.50% | |
| 22.24 | 22.24 | 21.77 | 21.90 | -0.64% | |
| 22.05 | 22.31 | 21.75 | 22.04 | -0.23% | |
| 21.81 | 22.44 | 21.81 | 22.09 | +0.59% | |
| 22.21 | 22.52 | 21.86 | 21.96 | -0.86% | |
| 22.29 | 22.54 | 21.70 | 22.15 | -0.63% | |
| 22.38 | 22.38 | 22.22 | 22.29 | 0.00% | |
| 22.11 | 22.32 | 22.10 | 22.29 | +0.86% | |
| 22.19 | 22.45 | 22.02 | 22.10 | -1.16% | |
| 22.50 | 22.52 | 22.26 | 22.36 | +0.31% | |
| 22.37 | 22.89 | 22.27 | 22.29 | +0.13% | |
| 22.52 | 22.96 | 22.26 | 22.26 | -1.20% | |
| 22.51 | 22.84 | 22.40 | 22.53 | -0.57% | |
| 22.41 | 22.93 | 22.41 | 22.66 | +0.58% | |
| 22.82 | 22.83 | 22.53 | 22.53 | -0.53% | |
| 22.63 | 22.89 | 22.63 | 22.65 | -0.18% | |
| 22.62 | 23.00 | 22.57 | 22.69 | +0.53% | |
| 22.26 | 22.77 | 22.26 | 22.57 | -0.13% | |
| 22.70 | 22.75 | 22.58 | 22.60 | -0.75% | |
| 23.43 | 23.43 | 22.63 | 22.77 | -2.36% | |
| 23.25 | 23.39 | 23.25 | 23.32 | +0.30% | |
| 23.28 | 23.45 | 22.99 | 23.25 | -0.34% | |
| 23.29 | 23.41 | 23.25 | 23.33 | +0.17% | |
| 23.28 | 23.43 | 23.27 | 23.29 | +0.04% | |
| 23.21 | 23.38 | 23.21 | 23.28 | +0.30% | |
| 23.36 | 23.40 | 23.02 | 23.21 | -0.47% | |
| 23.14 | 23.55 | 22.94 | 23.32 | +0.78% | |
| 23.01 | 23.30 | 22.90 | 23.14 | +0.56% | |
| 23.12 | 23.15 | 22.88 | 23.01 | -0.60% | |
| 23.21 | 23.28 | 22.95 | 23.15 | -0.52% | |
| 23.12 | 23.49 | 23.11 | 23.27 | +0.39% | |
| 23.07 | 23.49 | 23.06 | 23.18 | +1.09% | |
| 22.79 | 23.24 | 22.78 | 22.93 | +0.70% | |
| 22.75 | 22.85 | 22.62 | 22.77 | +0.09% | |
| 22.67 | 22.87 | 22.67 | 22.75 | +0.18% | |
| 22.46 | 22.87 | 22.33 | 22.71 | +0.93% | |
| 22.70 | 22.80 | 22.42 | 22.50 | -0.27% | |
| 22.42 | 22.71 | 22.27 | 22.56 | +0.80% | |
| 22.39 | 22.54 | 22.33 | 22.38 | -0.40% | |
| 22.71 | 22.71 | 22.02 | 22.47 | -1.06% | |
| 22.56 | 22.86 | 22.34 | 22.71 | +0.26% | |
| 22.81 | 22.90 | 22.62 | 22.65 | -1.52% | |
| 23.21 | 23.35 | 22.81 | 23.00 | -2.42% | |
| 23.59 | 23.77 | 23.48 | 23.57 | +0.13% | |
| 23.58 | 23.70 | 23.41 | 23.54 | -0.76% | |
| 23.46 | 23.88 | 23.21 | 23.72 | +1.89% | |
| 23.21 | 23.47 | 23.10 | 23.28 | +0.34% | |
| 23.53 | 23.53 | 23.20 | 23.20 | -1.07% | |
| 22.55 | 23.45 | 22.55 | 23.45 | +3.90% | |
| 22.77 | 23.60 | 22.52 | 22.57 | -0.44% | |
| 23.00 | 23.27 | 22.67 | 22.67 | -1.39% | |
| 23.08 | 23.49 | 22.80 | 22.99 | -0.26% | |
| 22.95 | 23.32 | 22.55 | 23.05 | +0.83% | |
| 22.90 | 22.95 | 22.50 | 22.86 | +0.18% | |
| 22.69 | 22.91 | 22.68 | 22.82 | +1.29% | |
| 22.53 | 22.70 | 22.50 | 22.53 | -0.13% | |
| 22.27 | 22.65 | 22.25 | 22.56 | +0.45% | |
| 22.42 | 22.50 | 22.20 | 22.46 | 0.00% | |
| 22.47 | 22.52 | 22.25 | 22.46 | +0.58% | |
| 22.25 | 22.50 | 22.24 | 22.33 | -0.04% | |
| 22.39 | 22.93 | 22.17 | 22.34 | -0.22% | |
| 22.46 | 22.50 | 22.20 | 22.39 | +0.27% | |
| 22.46 | 22.60 | 22.17 | 22.33 | +0.13% | |
| 22.46 | 22.74 | 22.23 | 22.30 | -1.33% | |
| 22.15 | 22.65 | 22.15 | 22.60 | -0.22% | |
| 22.12 | 22.72 | 22.12 | 22.65 | -0.04% | |
| 22.61 | 22.84 | 22.52 | 22.66 | -0.09% | |
| 22.79 | 22.85 | 22.50 | 22.68 | +0.49% | |
| 22.08 | 22.74 | 22.08 | 22.57 | +0.76% | |
| 22.00 | 22.72 | 22.00 | 22.40 | +1.36% | |
| 22.07 | 22.40 | 21.86 | 22.10 | -0.14% | |
| 22.23 | 22.39 | 22.02 | 22.13 | -1.16% | |
| 22.18 | 22.50 | 22.01 | 22.39 | +1.36% | |
| 21.70 | 22.42 | 21.68 | 22.09 | +1.61% | |
| 21.70 | 22.23 | 21.51 | 21.74 | +0.14% | |
| 22.23 | 22.37 | 21.71 | 21.71 | -2.12% | |
| 22.21 | 22.55 | 22.15 | 22.18 | -0.98% | |
| 22.41 | 22.50 | 22.13 | 22.40 | +0.45% | |
| 22.05 | 22.47 | 22.05 | 22.30 | +1.13% | |
| 22.29 | 22.60 | 22.05 | 22.05 | -0.77% | |
| 22.75 | 22.75 | 21.99 | 22.22 | -1.02% | |
| 22.24 | 22.55 | 22.17 | 22.45 | +0.40% | |
| 22.20 | 22.56 | 22.12 | 22.36 | +0.13% | |
| 21.86 | 22.45 | 21.86 | 22.33 | +1.36% | |
| 22.29 | 22.58 | 21.98 | 22.03 | -1.87% | |
| 22.50 | 22.65 | 22.03 | 22.45 | -1.23% | |
| 22.26 | 22.73 | 22.10 | 22.73 | +2.34% | |
| 22.20 | 22.21 | 21.85 | 22.21 | +0.41% | |
| 21.59 | 22.24 | 21.56 | 22.12 | +1.94% | |
| 21.99 | 22.00 | 21.53 | 21.70 | -1.81% | |
| 22.56 | 22.56 | 22.03 | 22.10 | -2.77% | |
| 21.97 | 22.74 | 21.96 | 22.73 | +2.62% | |
| 22.15 | 22.34 | 21.82 | 22.15 | +0.64% | |
| 21.96 | 22.35 | 21.60 | 22.01 | -0.81% | |
| 21.71 | 22.28 | 21.71 | 22.19 | +0.77% | |
| 21.70 | 22.11 | 21.59 | 22.02 | +0.73% | |
| 21.80 | 21.89 | 21.50 | 21.86 | -0.68% | |
| 22.30 | 22.30 | 21.58 | 22.01 | -0.32% | |
| 21.37 | 22.15 | 21.36 | 22.08 | +3.95% | |
| 21.22 | 21.40 | 21.00 | 21.24 | +0.14% | |
| 20.97 | 21.49 | 20.97 | 21.21 | +1.29% | |
| 21.27 | 21.42 | 20.78 | 20.94 | -1.87% | |
| 21.11 | 21.53 | 21.07 | 21.34 | +0.71% | |
| 21.40 | 21.40 | 21.01 | 21.19 | -0.61% | |
| 21.23 | 21.40 | 21.11 | 21.32 | +0.80% | |
| 21.68 | 21.70 | 21.15 | 21.15 | -1.63% | |
| 21.14 | 21.55 | 21.14 | 21.50 | +1.51% | |
| 21.15 | 21.40 | 21.01 | 21.18 | -0.19% | |
| 20.75 | 21.24 | 20.75 | 21.22 | +2.61% | |
| 21.05 | 21.05 | 20.46 | 20.68 | -4.30% | |
| 21.80 | 21.85 | 21.40 | 21.61 | -0.87% | |
| 21.76 | 22.24 | 21.66 | 21.80 | -0.27% | |
| 21.95 | 22.30 | 21.77 | 21.86 | -0.32% | |
| 21.57 | 22.07 | 21.48 | 21.93 | +2.19% | |
| 21.63 | 21.64 | 21.35 | 21.46 | -1.01% | |
| 21.44 | 21.69 | 21.33 | 21.68 | +1.26% | |
| 21.24 | 21.47 | 21.03 | 21.41 | +1.09% | |
| 21.25 | 21.36 | 21.06 | 21.18 | +0.33% | |
| 21.29 | 21.29 | 20.91 | 21.11 | +0.09% | |
| 21.33 | 21.42 | 20.82 | 21.09 | -1.03% | |
| 21.26 | 21.41 | 21.26 | 21.31 | +0.47% | |
| 20.90 | 21.21 | 20.90 | 21.21 | +1.82% | |
| 20.80 | 20.99 | 20.57 | 20.83 | -0.10% | |
| 20.75 | 20.99 | 20.75 | 20.85 | -0.43% | |
| 20.60 | 21.16 | 20.60 | 20.94 | +0.14% | |
| 20.46 | 21.05 | 20.46 | 20.91 | +2.85% | |
| 20.38 | 20.61 | 20.30 | 20.33 | +0.40% | |
| 20.25 | 20.49 | 20.11 | 20.25 | -0.25% | |
| 20.28 | 20.42 | 20.00 | 20.30 | +0.94% | |
| 19.75 | 20.17 | 19.75 | 20.11 | +1.87% | |
| 19.90 | 19.97 | 19.60 | 19.74 | -0.70% | |
| 19.27 | 19.98 | 19.21 | 19.88 | +3.60% | |
| 18.99 | 19.37 | 18.82 | 19.19 | +1.27% | |
| 19.05 | 19.42 | 18.75 | 18.95 | -0.26% | |
| 18.74 | 19.04 | 18.70 | 19.00 | +2.04% | |
| 18.48 | 18.81 | 18.33 | 18.62 | +0.65% | |
| 18.55 | 18.59 | 18.33 | 18.50 | -0.86% | |
| 18.95 | 19.08 | 18.60 | 18.66 | -1.17% | |
| 18.99 | 19.17 | 18.83 | 18.88 | -0.89% | |
| 19.00 | 19.33 | 18.90 | 19.05 | -0.26% | |
| 19.10 | 19.50 | 19.00 | 19.10 | 0.00% | |
| 19.50 | 19.55 | 19.01 | 19.10 | -1.50% | |
| 19.15 | 19.47 | 19.14 | 19.39 | +0.94% | |
| 19.28 | 19.32 | 19.15 | 19.21 | -0.21% | |
| 19.15 | 19.50 | 19.12 | 19.25 | +0.21% | |
| 19.75 | 19.76 | 19.07 | 19.21 | -2.78% | |
| 19.87 | 20.00 | 19.70 | 19.76 | +0.15% | |
| 19.26 | 19.78 | 19.24 | 19.73 | +2.12% | |
| 19.12 | 19.37 | 18.88 | 19.32 | +1.58% | |
| 18.88 | 19.18 | 18.88 | 19.02 | +0.26% | |
| 19.19 | 19.19 | 18.92 | 18.97 | -0.99% | |
| 19.10 | 19.18 | 18.84 | 19.16 | +1.22% | |
| 18.92 | 19.05 | 18.82 | 18.93 | -0.37% | |
| 18.85 | 19.16 | 18.85 | 19.00 | +0.21% | |
| 18.80 | 19.01 | 18.75 | 18.96 | +0.74% | |
| 18.88 | 19.19 | 18.81 | 18.82 | -0.74% | |
| 19.20 | 19.20 | 18.90 | 18.96 | -0.52% | |
| 18.80 | 19.26 | 18.63 | 19.06 | +1.82% | |
| 18.26 | 18.98 | 18.26 | 18.72 | +1.46% | |
| 18.27 | 18.49 | 18.25 | 18.45 | +1.37% | |
| 17.85 | 18.31 | 17.85 | 18.20 | +1.85% | |
| 17.99 | 18.19 | 17.86 | 17.87 | -0.22% | |
| 17.94 | 18.14 | 17.89 | 17.91 | +0.06% | |
| 17.92 | 18.18 | 17.75 | 17.90 | -0.11% | |
| 18.49 | 18.60 | 17.92 | 17.92 | -3.34% | |
| 18.78 | 18.91 | 18.50 | 18.54 | -1.28% | |
| 19.05 | 19.15 | 18.69 | 18.78 | -1.42% | |
| 18.15 | 19.15 | 18.15 | 19.05 | +4.96% | |
| 18.38 | 18.80 | 18.04 | 18.15 | -1.25% | |
| 18.20 | 18.56 | 18.19 | 18.38 | -1.66% | |
| 18.55 | 18.80 | 18.50 | 18.69 | 0.00% | |
| 18.73 | 18.99 | 18.50 | 18.69 | +0.16% | |
| 18.61 | 18.90 | 18.60 | 18.66 | +0.86% | |
| 18.54 | 19.09 | 18.50 | 18.50 | -0.91% | |
| 18.86 | 18.93 | 18.39 | 18.67 | -1.01% | |
| 18.96 | 19.40 | 18.80 | 18.86 | -0.47% | |
| 18.96 | 19.43 | 18.11 | 18.95 | 0.00% | |
| 19.30 | 19.36 | 18.93 | 18.95 | -1.86% | |
| 19.60 | 19.61 | 19.16 | 19.31 | -1.63% | |
| 19.87 | 20.00 | 19.59 | 19.63 | -1.21% | |
| 19.53 | 19.99 | 19.51 | 19.87 | +2.79% | |
| 20.21 | 20.21 | 19.33 | 19.33 | -3.64% | |
| 19.97 | 20.28 | 19.81 | 20.06 | +0.55% | |
| 19.96 | 20.07 | 19.75 | 19.95 | +0.40% | |
| 20.04 | 20.22 | 19.85 | 19.87 | -0.40% | |
| 20.35 | 20.46 | 19.92 | 19.95 | -1.97% | |
| 20.65 | 20.65 | 20.25 | 20.35 | -1.36% | |
| 20.65 | 20.75 | 20.57 | 20.63 | -0.10% | |
| 20.68 | 20.92 | 20.52 | 20.65 | -0.19% | |
| 20.61 | 20.84 | 20.61 | 20.69 | +0.44% | |
| 21.15 | 21.15 | 20.60 | 20.60 | -2.28% | |
| 21.20 | 21.26 | 21.07 | 21.08 | — |
Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the WLKP chart for longer ranges.