Westlake (WLK) Change in Inventory (2010 - 2026)
Westlake's quarterly Change in Inventory came in at $8.0 million in Q1 2026, down 89.19% year-on-year from $74.0 million in Q1 2025, and up 112.5% quarter-over-quarter from -$64.0 million in Q4 2025.
Westlake has reported Change in Inventory for 17 years, with the latest figure at $8.0 million in Q1 2026.
- For the quarter ending Q1 2026, Change in Inventory fell 89.19% year-over-year to $8.0 million; the trailing twelve-month figure through Mar 2026 stood at -$117.0 million (down 194.35% YoY), and the FY2025 full-year result was -$51.0 million, down 152.58% from the prior year.
- Change in Inventory for Q1 2026 stood at $8.0 million, up from -$64.0 million in the prior quarter.
- The five-year high for Change in Inventory was $163.0 million in Q2 2022, with the low at -$198.0 million in Q4 2022.
- Average Change in Inventory over 5 years is -$3.3 million, with a median of $8.0 million recorded in 2026.
- Year-over-year, Change in Inventory jumped 1153.85% in 2022 and plunged 318.52% in 2025.
- Tracing WLK's Change in Inventory over 5 years: stood at -$198.0 million in 2022, then surged by 71.72% to -$56.0 million in 2023, then surged by 51.79% to -$27.0 million in 2024, then tumbled by 137.04% to -$64.0 million in 2025, then surged by 112.5% to $8.0 million in 2026.
- The last three Change in Inventory figures came in at $8.0 million (Q1 2026), -$64.0 million (Q4 2025), and -$2.0 million (Q3 2025), per Business Quant data.
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Change in Inventory (Qtr) |
|---|---|---|---|---|---|
| 1 | Linde | 230.79 Bn | 226.84 Bn | 4.26 Bn | 48.00 Mn |
| 2 | Chemical & Mining Co Of Chile | 127.66 Bn | 124.93 Bn | 778.60 Mn | - |
| 3 | Sherwin Williams | 72.51 Bn | 72.30 Bn | 2.78 Bn | - |
| 4 | Ecolab | 70.96 Bn | 70.34 Bn | 1.85 Bn | -74.00 Mn |
| 5 | Air Products & Chemicals | 62.15 Bn | 63.70 Bn | 987.40 Mn | -16.00 Mn |
| 6 | Ppg Industries | 25.04 Bn | 23.57 Bn | 1.66 Bn | 156.00 Mn |
| 7 | LyondellBasell Industries | 21.62 Bn | 21.73 Bn | 701.00 Mn | 96.00 Mn |
| 8 | Albemarle | 20.26 Bn | 19.42 Bn | 500.97 Mn | - |
| 9 | DuPont de Nemours | 19.45 Bn | 19.56 Bn | 602.00 Mn | - |
| 10 | Westlake | 11.07 Bn | 9.10 Bn | 112.00 Mn | 8.00 Mn |
Historic Data
Download Data| Date | Value |
|---|---|
| Mar 31, 2026 | 8.00 Mn |
| Mar 31, 2026 | 8.00 Mn |
| Dec 31, 2025 | -64.00 Mn |
| Dec 31, 2025 | -64.00 Mn |
| Sep 30, 2025 | -2.00 Mn |
| Sep 30, 2025 | -2.00 Mn |
| Jun 30, 2025 | -59.00 Mn |
| Jun 30, 2025 | -59.00 Mn |
| Mar 31, 2025 | 74.00 Mn |
| Mar 31, 2025 | 74.00 Mn |
| Dec 31, 2024 | -27.00 Mn |
| Dec 31, 2024 | -27.00 Mn |
| Sep 30, 2024 | 50.00 Mn |
| Sep 30, 2024 | 50.00 Mn |
| Jun 30, 2024 | 27.00 Mn |
| Jun 30, 2024 | 27.00 Mn |
| Mar 31, 2024 | 47.00 Mn |
| Mar 31, 2024 | 47.00 Mn |
| Dec 31, 2023 | -56.00 Mn |
| Dec 31, 2023 | -56.00 Mn |
| Sep 30, 2023 | 11.00 Mn |
| Sep 30, 2023 | 11.00 Mn |
| Jun 30, 2023 | -171.00 Mn |
| Jun 30, 2023 | -171.00 Mn |
| Mar 31, 2023 | -34.00 Mn |
| Mar 31, 2023 | -34.00 Mn |
| Dec 31, 2022 | -198.00 Mn |
| Dec 31, 2022 | -198.00 Mn |
| Sep 30, 2022 | 39.00 Mn |
| Sep 30, 2022 | 39.00 Mn |
| Jun 30, 2022 | 163.00 Mn |
| Jun 30, 2022 | 163.00 Mn |
| Mar 31, 2022 | 136.00 Mn |
| Mar 31, 2022 | 136.00 Mn |
| Dec 31, 2021 | 129.00 Mn |
| Dec 31, 2021 | 129.00 Mn |
| Sep 30, 2021 | 125.00 Mn |
| Sep 30, 2021 | 125.00 Mn |
| Jun 30, 2021 | 13.00 Mn |
| Jun 30, 2021 | 13.00 Mn |
| Mar 31, 2021 | 42.00 Mn |
| Mar 31, 2021 | 42.00 Mn |
| Dec 31, 2020 | 79.00 Mn |
| Dec 31, 2020 | 79.00 Mn |
| Sep 30, 2020 | -21.00 Mn |
| Sep 30, 2020 | -21.00 Mn |
| Jun 30, 2020 | -95.00 Mn |
| Jun 30, 2020 | -95.00 Mn |
| Mar 31, 2020 | 8.00 Mn |
| Mar 31, 2020 | 8.00 Mn |
| Dec 31, 2019 | 24.00 Mn |
| Dec 31, 2019 | 24.00 Mn |
| Sep 30, 2019 | -11.00 Mn |
| Sep 30, 2019 | -11.00 Mn |
| Jun 30, 2019 | -106.00 Mn |
| Jun 30, 2019 | -106.00 Mn |
| Mar 31, 2019 | -19.00 Mn |
| Mar 31, 2019 | -19.00 Mn |
| Dec 31, 2018 | 81.00 Mn |
| Dec 31, 2018 | 81.00 Mn |
| Sep 30, 2018 | 33.00 Mn |
| Sep 30, 2018 | 33.00 Mn |
| Jun 30, 2018 | -32.00 Mn |
| Jun 30, 2018 | -32.00 Mn |
| Mar 31, 2018 | 41.00 Mn |
| Mar 31, 2018 | 41.00 Mn |
| Dec 31, 2017 | 56.00 Mn |
| Dec 31, 2017 | 56.00 Mn |
| Sep 30, 2017 | -3.00 Mn |
| Sep 30, 2017 | -3.00 Mn |
| Jun 30, 2017 | -40.00 Mn |
| Jun 30, 2017 | -40.00 Mn |
| Mar 31, 2017 | 19.00 Mn |
| Mar 31, 2017 | 19.00 Mn |
| Dec 31, 2016 | 55.88 Mn |
| Dec 31, 2016 | 55.88 Mn |
| Sep 30, 2016 | -6.60 Mn |
| Sep 30, 2016 | -6.60 Mn |
| Jun 30, 2016 | -28.16 Mn |
| Jun 30, 2016 | -28.16 Mn |
| Mar 31, 2016 | 40.88 Mn |
| Mar 31, 2016 | 40.88 Mn |
| Dec 31, 2015 | 6.90 Mn |
| Dec 31, 2015 | 6.90 Mn |
| Sep 30, 2015 | -55.78 Mn |
| Sep 30, 2015 | -55.78 Mn |
| Jun 30, 2015 | -14.14 Mn |
| Jun 30, 2015 | -14.14 Mn |
| Mar 31, 2015 | -35.98 Mn |
| Mar 31, 2015 | -35.98 Mn |
| Dec 31, 2014 | 29.41 Mn |
| Dec 31, 2014 | 29.41 Mn |
| Sep 30, 2014 | -46.13 Mn |
| Sep 30, 2014 | -46.13 Mn |
| Jun 30, 2014 | -1.49 Mn |
| Jun 30, 2014 | -1.49 Mn |
| Mar 31, 2014 | -32.87 Mn |
| Mar 31, 2014 | -32.87 Mn |
| Dec 31, 2013 | 20.31 Mn |
| Dec 31, 2013 | 20.31 Mn |
| Sep 30, 2013 | 24.43 Mn |
| Sep 30, 2013 | 24.43 Mn |
| Jun 30, 2013 | -6.88 Mn |
| Jun 30, 2013 | -6.88 Mn |
| Mar 31, 2013 | 8.78 Mn |
| Mar 31, 2013 | 8.78 Mn |
| Dec 31, 2012 | 27.76 Mn |
| Dec 31, 2012 | 27.76 Mn |
| Sep 30, 2012 | -35.59 Mn |
| Sep 30, 2012 | -35.59 Mn |
| Jun 30, 2012 | -15.28 Mn |
| Jun 30, 2012 | -15.28 Mn |
| Mar 31, 2012 | -68.37 Mn |
| Mar 31, 2012 | -68.37 Mn |
| Dec 31, 2011 | 24.53 Mn |
| Dec 31, 2011 | 24.53 Mn |
| Sep 30, 2011 | -41.95 Mn |
| Sep 30, 2011 | -41.95 Mn |
| Jun 30, 2011 | 61.94 Mn |
| Jun 30, 2011 | 61.94 Mn |
| Mar 31, 2011 | -3.77 Mn |
| Mar 31, 2011 | -3.77 Mn |
| Dec 31, 2010 | 94.23 Mn |
| Dec 31, 2010 | 94.23 Mn |
| Sep 30, 2010 | -14.22 Mn |
| Sep 30, 2010 | -14.22 Mn |