Westlake Corporation Increase (Decrease) in Inventories
Westlake Corporation (WLK) reported Increase (Decrease) in Inventories of $64.00 million for the 6-month period ending 2026-06-30, per its 10-Q filed 2026-08-05.
Financial Statements › Cash Flow › Operating Activities
us-gaap:IncreaseDecreaseInInventories · last filed 2026-08-05
- Westlake Corporation increase (decrease) in inventories for the quarter ending 2026-06-30 was $56.00M.
- Westlake Corporation increase (decrease) in inventories for the quarter ending 2026-03-31 was $8.00M, a 89.19% decline year-over-year.
- Westlake Corporation increase (decrease) in inventories for the quarter ending 2025-12-31 was -$64.00M.
- Westlake Corporation increase (decrease) in inventories for the quarter ending 2025-09-30 was -$2.00M, a 104.00% decline year-over-year.
- Westlake Corporation increase (decrease) in inventories for fiscal 2025 was -$51.00M, a 152.58% decline from fiscal 2024.
- Westlake Corporation increase (decrease) in inventories for fiscal 2024 was $97.00M.
- Westlake Corporation increase (decrease) in inventories for fiscal 2023 was -$250.00M, a 278.57% decline from fiscal 2022.
- Westlake Corporation increase (decrease) in inventories for fiscal 2022 was $140.00M, a 54.69% decline from fiscal 2021.
| Period end | Increase (Decrease) in Inventories 3 month | Increase (Decrease) in Inventories 3 month as first filed | Increase (Decrease) in Inventories 6 month | Increase (Decrease) in Inventories 6 month as first filed | Increase (Decrease) in Inventories 9 month | Increase (Decrease) in Inventories 9 month as first filed | Increase (Decrease) in Inventories 12 month | Increase (Decrease) in Inventories 12 month as first filed |
|---|---|---|---|---|---|---|---|---|
| 2026-06-30 | $56.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2026-08-05 | $64.00M 10-Q · filed 2026-08-05 | $0.00 derived: sum of 3 quarters · filed 2026-08-05 | -$2.00M derived: sum of 4 quarters · filed 2026-08-05 | ||||
| 2026-03-31 | $8.00M 10-Q · filed 2026-05-06 | -$56.00M derived: sum of 2 quarters · filed 2026-05-06 | -$58.00M derived: sum of 3 quarters · filed 2026-05-06 | -$117.00M derived: sum of 4 quarters · filed 2026-08-05 | ||||
| 2025-12-31 | -$64.00M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-26 | -$66.00M derived: sum of 2 quarters · filed 2026-02-26 | -$125.00M derived: sum of 3 quarters · filed 2026-08-05 | -$51.00M 10-K · filed 2026-02-26 | ||||
| 2025-09-30 | -$2.00M derived: 10-Q 9 month − 10-Q 6 month · filed 2025-10-31 | -$61.00M derived: sum of 2 quarters · filed 2026-08-05 | $13.00M 10-Q · filed 2025-10-31 | -$14.00M derived: sum of 4 quarters · filed 2026-08-05 | ||||
| 2025-06-30 | -$59.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2026-08-05 | $15.00M 10-Q · filed 2026-08-05 | -$12.00M derived: sum of 3 quarters · filed 2026-08-05 | $38.00M derived: sum of 4 quarters · filed 2026-08-05 | ||||
| 2025-03-31 | $74.00M 10-Q · filed 2026-05-06 | $47.00M derived: sum of 2 quarters · filed 2026-05-06 | $97.00M derived: sum of 3 quarters · filed 2026-05-06 | $124.00M derived: sum of 4 quarters · filed 2026-05-06 | ||||
| 2024-12-31 | -$27.00M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-26 | $23.00M derived: sum of 2 quarters · filed 2026-02-26 | $50.00M derived: sum of 3 quarters · filed 2026-02-26 | $97.00M 10-K · filed 2026-02-26 | ||||
| 2024-09-30 | $50.00M derived: 10-Q 9 month − 10-Q 6 month · filed 2025-10-31 | $77.00M derived: sum of 2 quarters · filed 2025-10-31 | $124.00M 10-Q · filed 2025-10-31 | $68.00M derived: sum of 4 quarters · filed 2026-02-26 | ||||
| 2024-06-30 | $27.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2025-08-06 | $74.00M 10-Q · filed 2025-08-06 | $18.00M derived: sum of 3 quarters · filed 2026-02-26 | $29.00M derived: sum of 4 quarters · filed 2026-02-26 | ||||
| 2024-03-31 | $47.00M 10-Q · filed 2025-05-02 | -$9.00M derived: sum of 2 quarters · filed 2026-02-26 | $2.00M derived: sum of 3 quarters · filed 2026-02-26 | -$169.00M derived: sum of 4 quarters · filed 2026-02-26 | ||||
| 2023-12-31 | -$56.00M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-26 | -$45.00M derived: sum of 2 quarters · filed 2026-02-26 | -$216.00M derived: sum of 3 quarters · filed 2026-02-26 | -$250.00M 10-K · filed 2026-02-26 | ||||
| 2023-09-30 | $11.00M derived: 10-Q 9 month − 10-Q 6 month · filed 2024-11-06 | -$160.00M derived: sum of 2 quarters · filed 2024-11-06 | -$194.00M 10-Q · filed 2024-11-06 | -$392.00M derived: sum of 4 quarters · filed 2025-02-25 | ||||
| 2023-06-30 | -$171.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2024-08-09 | -$205.00M 10-Q · filed 2024-08-09 | -$403.00M derived: sum of 3 quarters · filed 2025-02-25 | -$364.00M derived: sum of 4 quarters · filed 2025-02-25 | ||||
| 2023-03-31 | -$34.00M 10-Q · filed 2024-05-02 | -$232.00M derived: sum of 2 quarters · filed 2025-02-25 | -$193.00M derived: sum of 3 quarters · filed 2025-02-25 | -$30.00M derived: sum of 4 quarters · filed 2025-02-25 | ||||
| 2022-12-31 | -$198.00M derived: 10-K 12 month − 10-Q 9 month · filed 2025-02-25 | -$159.00M derived: sum of 2 quarters · filed 2025-02-25 | $4.00M derived: sum of 3 quarters · filed 2025-02-25 | $140.00M 10-K · filed 2025-02-25 | ||||
| 2022-09-30 | $39.00M derived: 10-Q 9 month − 10-Q 6 month · filed 2023-11-02 | $202.00M derived: sum of 2 quarters · filed 2023-11-02 | $338.00M 10-Q · filed 2023-11-02 | $467.00M derived: sum of 4 quarters · filed 2024-02-22 | ||||
| 2022-06-30 | $163.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2023-08-03 | $299.00M 10-Q · filed 2023-08-03 | $428.00M derived: sum of 3 quarters · filed 2024-02-22 | $553.00M derived: sum of 4 quarters · filed 2024-02-22 | ||||
| 2022-03-31 | $136.00M 10-Q · filed 2023-05-04 | $265.00M derived: sum of 2 quarters · filed 2024-02-22 | $390.00M derived: sum of 3 quarters · filed 2024-02-22 | $403.00M derived: sum of 4 quarters · filed 2024-02-22 | ||||
| 2021-12-31 | $129.00M derived: 10-K 12 month − 10-Q 9 month · filed 2024-02-22 | $254.00M derived: sum of 2 quarters · filed 2024-02-22 | $267.00M derived: sum of 3 quarters · filed 2024-02-22 | $309.00M 10-K · filed 2024-02-22 | ||||
| 2021-09-30 | $125.00M derived: 10-Q 9 month − 10-Q 6 month · filed 2022-11-03 | $138.00M derived: sum of 2 quarters · filed 2022-11-03 | $180.00M 10-Q · filed 2022-11-03 | $259.00M derived: sum of 4 quarters · filed 2023-02-22 | ||||
| 2021-06-30 | $13.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2022-08-03 | $55.00M 10-Q · filed 2022-08-03 | $134.00M derived: sum of 3 quarters · filed 2023-02-22 | $113.00M derived: sum of 4 quarters · filed 2023-02-22 | ||||
| 2021-03-31 | $42.00M 10-Q · filed 2022-05-04 | $121.00M derived: sum of 2 quarters · filed 2023-02-22 | $100.00M derived: sum of 3 quarters · filed 2023-02-22 | $5.00M derived: sum of 4 quarters · filed 2023-02-22 | ||||
| 2020-12-31 | $79.00M derived: 10-K 12 month − 10-Q 9 month · filed 2023-02-22 | $58.00M derived: sum of 2 quarters · filed 2023-02-22 | -$37.00M derived: sum of 3 quarters · filed 2023-02-22 | -$29.00M 10-K · filed 2023-02-22 | ||||
| 2020-09-30 | -$21.00M derived: 10-Q 9 month − 10-Q 6 month · filed 2021-11-03 | -$116.00M derived: sum of 2 quarters · filed 2021-11-03 | -$108.00M 10-Q · filed 2021-11-03 | -$84.00M derived: sum of 4 quarters · filed 2022-02-23 | ||||
| 2020-06-30 | -$95.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2021-08-03 | -$87.00M 10-Q · filed 2021-08-03 | -$63.00M derived: sum of 3 quarters · filed 2022-02-23 | -$74.00M derived: sum of 4 quarters · filed 2022-02-23 | ||||
| 2020-03-31 | $8.00M 10-Q · filed 2021-05-05 | $32.00M derived: sum of 2 quarters · filed 2022-02-23 | $21.00M derived: sum of 3 quarters · filed 2022-02-23 | -$85.00M derived: sum of 4 quarters · filed 2022-02-23 | ||||
| 2019-12-31 | $24.00M derived: 10-K 12 month − 10-Q 9 month · filed 2022-02-23 | $13.00M derived: sum of 2 quarters · filed 2022-02-23 | -$93.00M derived: sum of 3 quarters · filed 2022-02-23 | -$112.00M 10-K · filed 2022-02-23 | ||||
| 2019-09-30 | -$11.00M derived: 10-Q 9 month − 10-Q 6 month · filed 2020-11-04 | -$117.00M derived: sum of 2 quarters · filed 2020-11-04 | -$136.00M 10-Q · filed 2020-11-04 | -$55.00M derived: sum of 4 quarters · filed 2021-02-24 | ||||
| 2019-06-30 | -$106.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2020-08-06 | -$125.00M 10-Q · filed 2020-08-06 | -$44.00M derived: sum of 3 quarters · filed 2021-02-24 | -$11.00M derived: sum of 4 quarters · filed 2021-02-24 | ||||
| 2019-03-31 | -$19.00M 10-Q · filed 2020-05-06 | $62.00M derived: sum of 2 quarters · filed 2021-02-24 | $95.00M derived: sum of 3 quarters · filed 2021-02-24 | $63.00M derived: sum of 4 quarters · filed 2021-02-24 | ||||
| 2018-12-31 | $81.00M derived: 10-K 12 month − 10-Q 9 month · filed 2021-02-24 | $114.00M derived: sum of 2 quarters · filed 2021-02-24 | $82.00M derived: sum of 3 quarters · filed 2021-02-24 | $123.00M 10-K · filed 2021-02-24 | ||||
| 2018-09-30 | $33.00M derived: 10-Q 9 month − 10-Q 6 month · filed 2019-11-06 | $1.00M derived: sum of 2 quarters · filed 2019-11-06 | $42.00M 10-Q · filed 2019-11-06 | $98.00M derived: sum of 4 quarters · filed 2020-02-19 | ||||
| 2018-06-30 | -$32.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2019-08-06 | $9.00M 10-Q · filed 2019-08-06 | $65.00M derived: sum of 3 quarters · filed 2020-02-19 | $62.00M derived: sum of 4 quarters · filed 2020-02-19 | ||||
| 2018-03-31 | $41.00M 10-Q · filed 2019-05-02 | $97.00M derived: sum of 2 quarters · filed 2020-02-19 | $94.00M derived: sum of 3 quarters · filed 2020-02-19 | $54.00M derived: sum of 4 quarters · filed 2020-02-19 | ||||
| 2017-12-31 | $56.00M derived: 10-K 12 month − 10-Q 9 month · filed 2020-02-19 | $53.00M derived: sum of 2 quarters · filed 2020-02-19 | $13.00M derived: sum of 3 quarters · filed 2020-02-19 | $32.00M 10-K · filed 2020-02-19 | ||||
| 2017-09-30 | -$3.00M derived: 10-Q 9 month − 10-Q 6 month · filed 2018-11-06 | -$43.00M derived: sum of 2 quarters · filed 2018-11-06 | -$24.00M 10-Q · filed 2018-11-06 | -$23.95M 10-Q · filed 2017-11-07 | $31.88M derived: sum of 4 quarters · filed 2019-02-20 | |||
| 2017-06-30 | -$40.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2018-08-02 | -$21.00M 10-Q · filed 2018-08-02 | -$21.21M 10-Q · filed 2017-08-03 | $34.88M derived: sum of 3 quarters · filed 2019-02-20 | $28.28M derived: sum of 4 quarters · filed 2019-02-20 | |||
| 2017-03-31 | $19.00M 10-Q · filed 2018-05-03 | $19.24M 10-Q · filed 2017-05-03 | $74.88M derived: sum of 2 quarters · filed 2019-02-20 | $68.28M derived: sum of 3 quarters · filed 2019-02-20 | $40.12M derived: sum of 4 quarters · filed 2019-02-20 | |||
| 2016-12-31 | $55.88M derived: 10-K 12 month − 10-Q 9 month · filed 2019-02-20 | $49.28M derived: sum of 2 quarters · filed 2019-02-20 | $21.12M derived: sum of 3 quarters · filed 2019-02-20 | $62.00M 10-K · filed 2019-02-20 | $61.98M 10-K · filed 2017-02-22 | |||
| 2016-09-30 | -$6.59M derived: 10-Q 9 month − 10-Q 6 month · filed 2017-11-07 | -$34.75M derived: sum of 2 quarters · filed 2017-11-07 | $6.12M 10-Q · filed 2017-11-07 | $13.02M derived: sum of 4 quarters · filed 2018-02-21 | ||||
| 2016-06-30 | -$28.16M derived: 10-Q 6 month − 10-Q 3 month · filed 2017-08-03 | $12.72M 10-Q · filed 2017-08-03 | $19.62M derived: sum of 3 quarters · filed 2018-02-21 | -$36.17M derived: sum of 4 quarters · filed 2018-02-21 | ||||
| 2016-03-31 | $40.88M 10-Q · filed 2017-05-03 | $47.78M derived: sum of 2 quarters · filed 2018-02-21 | -$8.01M derived: sum of 3 quarters · filed 2018-02-21 | -$22.14M derived: sum of 4 quarters · filed 2018-02-21 | ||||
| 2015-12-31 | $6.90M derived: 10-K 12 month − 10-Q 9 month · filed 2018-02-21 | -$48.88M derived: sum of 2 quarters · filed 2018-02-21 | -$63.02M derived: sum of 3 quarters · filed 2018-02-21 | -$99.00M 10-K · filed 2018-02-21 | -$99.43M 10-K · filed 2016-02-24 | |||
| 2015-09-30 | -$55.78M derived: 10-Q 9 month − 10-Q 6 month · filed 2016-11-09 | -$69.92M derived: sum of 2 quarters · filed 2016-11-09 | -$105.90M 10-Q · filed 2016-11-09 | -$76.49M derived: sum of 4 quarters · filed 2017-02-22 | ||||
| 2015-06-30 | -$14.14M derived: 10-Q 6 month − 10-Q 3 month · filed 2016-08-09 | -$50.12M 10-Q · filed 2016-08-09 | -$20.71M derived: sum of 3 quarters · filed 2017-02-22 | -$66.84M derived: sum of 4 quarters · filed 2017-02-22 | ||||
| 2015-03-31 | -$35.98M 10-Q · filed 2016-05-04 | -$6.57M derived: sum of 2 quarters · filed 2017-02-22 | -$52.71M derived: sum of 3 quarters · filed 2017-02-22 | -$54.20M derived: sum of 4 quarters · filed 2017-02-22 | ||||
| 2014-12-31 | $29.41M derived: 10-K 12 month − 10-Q 9 month · filed 2017-02-22 | -$16.73M derived: sum of 2 quarters · filed 2017-02-22 | -$18.22M derived: sum of 3 quarters · filed 2017-02-22 | -$51.09M 10-K · filed 2017-02-22 | ||||
| 2014-09-30 | -$46.13M derived: 10-Q 9 month − 10-Q 6 month · filed 2015-11-04 | -$47.62M derived: sum of 2 quarters · filed 2015-11-04 | -$80.49M 10-Q · filed 2015-11-04 | -$60.18M derived: sum of 4 quarters · filed 2016-02-24 | ||||
| 2014-06-30 | -$1.49M derived: 10-Q 6 month − 10-Q 3 month · filed 2015-08-05 | -$34.36M 10-Q · filed 2015-08-05 | -$14.05M derived: sum of 3 quarters · filed 2016-02-24 | $10.38M derived: sum of 4 quarters · filed 2016-02-24 | ||||
| 2014-03-31 | -$32.87M 10-Q · filed 2015-05-06 | -$12.56M derived: sum of 2 quarters · filed 2016-02-24 | $11.87M derived: sum of 3 quarters · filed 2016-02-24 | $4.99M derived: sum of 4 quarters · filed 2016-02-24 | ||||
| 2013-12-31 | $20.31M derived: 10-K 12 month − 10-Q 9 month · filed 2016-02-24 | $44.74M derived: sum of 2 quarters · filed 2016-02-24 | $37.86M derived: sum of 3 quarters · filed 2016-02-24 | $46.63M 10-K · filed 2016-02-24 | ||||
| 2013-09-30 | $24.43M derived: 10-Q 9 month − 10-Q 6 month · filed 2014-11-07 | $17.55M derived: sum of 2 quarters · filed 2014-11-07 | $26.32M 10-Q · filed 2014-11-07 | $54.09M derived: sum of 4 quarters · filed 2015-02-25 | ||||
| 2013-06-30 | -$6.88M derived: 10-Q 6 month − 10-Q 3 month · filed 2014-08-06 | $1.89M 10-Q · filed 2014-08-06 | $29.65M derived: sum of 3 quarters · filed 2015-02-25 | -$5.93M derived: sum of 4 quarters · filed 2015-02-25 | ||||
| 2013-03-31 | $8.78M 10-Q · filed 2014-05-06 | $36.54M derived: sum of 2 quarters · filed 2015-02-25 | $950.00K derived: sum of 3 quarters · filed 2015-02-25 | -$14.33M derived: sum of 4 quarters · filed 2015-02-25 | ||||
| 2012-12-31 | $27.76M derived: 10-K 12 month − 10-Q 9 month · filed 2015-02-25 | -$7.83M derived: sum of 2 quarters · filed 2015-02-25 | -$23.11M derived: sum of 3 quarters · filed 2015-02-25 | -$91.48M 10-K · filed 2015-02-25 | ||||
| 2012-09-30 | -$35.59M derived: 10-Q 9 month − 10-Q 6 month · filed 2013-11-07 | -$50.87M derived: sum of 2 quarters · filed 2013-11-07 | -$119.24M 10-Q · filed 2013-11-07 | -$94.71M derived: sum of 4 quarters · filed 2014-02-21 | ||||
| 2012-06-30 | -$15.28M derived: 10-Q 6 month − 10-Q 3 month · filed 2013-07-31 | -$83.65M 10-Q · filed 2013-07-31 | -$59.12M derived: sum of 3 quarters · filed 2014-02-21 | -$101.07M derived: sum of 4 quarters · filed 2014-02-21 | ||||
| 2012-03-31 | -$68.37M 10-Q · filed 2013-05-07 | -$43.84M derived: sum of 2 quarters · filed 2014-02-21 | -$85.79M derived: sum of 3 quarters · filed 2014-02-21 | -$23.85M derived: sum of 4 quarters · filed 2014-02-21 | ||||
| 2011-12-31 | $24.53M derived: 10-K 12 month − 10-Q 9 month · filed 2014-02-21 | -$17.42M derived: sum of 2 quarters · filed 2014-02-21 | $44.52M derived: sum of 3 quarters · filed 2014-02-21 | $40.75M 10-K · filed 2014-02-21 | ||||
| 2011-09-30 | -$41.95M derived: 10-Q 9 month − 10-Q 6 month · filed 2012-11-08 | $19.99M derived: sum of 2 quarters · filed 2012-11-08 | $16.22M 10-Q · filed 2012-11-08 | $110.44M derived: sum of 4 quarters · filed 2013-02-22 | ||||
| 2011-06-30 | $61.94M derived: 10-Q 6 month − 10-Q 3 month · filed 2012-08-03 | $58.17M 10-Q · filed 2012-08-03 | $152.40M derived: sum of 3 quarters · filed 2013-02-22 | $138.17M derived: sum of 4 quarters · filed 2013-02-22 | ||||
| 2011-03-31 | -$3.77M 10-Q · filed 2012-05-02 | $90.45M derived: sum of 2 quarters · filed 2013-02-22 | $76.23M derived: sum of 3 quarters · filed 2013-02-22 | |||||
| 2010-12-31 | $94.22M derived: 10-K 12 month − 10-Q 9 month · filed 2013-02-22 | $80.00M derived: sum of 2 quarters · filed 2013-02-22 | $80.61M 10-K · filed 2013-02-22 | |||||
| 2010-09-30 | -$14.22M derived: 10-Q 9 month − 10-Q 6 month · filed 2011-11-02 | -$13.61M 10-Q · filed 2011-11-02 | ||||||
| 2010-06-30 | $608.00K 10-Q · filed 2011-08-03 | |||||||
| 2009-12-31 | $41.45M 10-K · filed 2012-02-23 |
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