Quick Answer
WESTLAKE CORP reported Operating Income of -$1.58 billion for fiscal year 2025.
WESTLAKE CORP Operating Income — Annual History
| Fiscal Year | Operating Income | YoY Change |
|---|---|---|
| 2025 | -$1.58B | -280.3% |
| 2024 | $875.00M | +20.0% |
| 2023 | $729.00M | -76.1% |
| 2022 | $3.05B | +8.9% |
| 2021 | $2.80B | +552.7% |
| 2020 | $429.00M | -34.6% |
| 2019 | $656.00M | -53.4% |
| 2018 | $1.41B | +14.9% |
| 2017 | $1.23B | +110.1% |
| 2016 | $583.00M | -39.3% |
| 2015 | $960.00M | -14.6% |
| 2014 | $1.12B | +17.9% |
| 2013 | $953.46M | +54.9% |
| 2012 | $615.35M | +37.7% |
| 2011 | $446.80M | +18.1% |
| 2010 | $378.36M | +252.8% |
| 2009 | $107.26M | — |
Quarterly Operating Income
| Quarter Ending | Operating Income | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | -$766.00M | -525.6% | -602.8% |
| June 30, 2025 | -$109.00M | -126.8% | -240.6% |
| March 31, 2025 | -$32.00M | -114.3% | -117.8% |
| September 30, 2024 | $180.00M | -48.4% | -55.7% |
| June 30, 2024 | $406.00M | +2.5% | +82.1% |
| March 31, 2024 | $223.00M | -58.4% | -36.1% |
| September 30, 2023 | $349.00M | -32.4% | -11.9% |
| June 30, 2023 | $396.00M | -66.3% | -26.1% |
- WESTLAKE CORP showed a decrease of -280.3% in Operating Income compared to the prior fiscal year.
- Over the 2009–2025 period, WESTLAKE CORP’s operating income has declined by 1571.2% (from $107.26 million to -$1.58 billion).
- The most recent figure is from WESTLAKE CORP’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 26, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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