TickerFacts.

WESTLAKE CORP (WLK) — Weighted Average Diluted Shares

Annual figures by period end, from SEC filings.

2009-12-31: 65.42M2010-12-31: 65.68M2011-12-31: 66.30M2012-12-31: 133.28M2013-12-31: 133.78M2014-12-31: 133.64M2015-12-31: 132.30M2016-12-31: 129.97M2017-12-31: 129.54M2018-12-31: 129.99M2019-12-31: 128.76M2020-12-31: 128.09M2021-12-31: 128.70M2022-12-31: 128.85M2023-12-31: 128.60M2024-12-31: 129.21M2025-12-31: 128.26M128.26M
2009-12-31Weighted Average Diluted Shares (shares)2025-12-31
Period endedWeighted Average Diluted SharesChange YoYSource filing
2025-12-31128.26M-0.7%2026-02-26From 2025-01-01
2024-12-31129.21M+0.5%2026-02-26From 2024-01-01
2023-12-31128.60M-0.2%2026-02-26From 2023-01-01
2022-12-31128.85M+0.1%2025-02-25From 2022-01-01
2021-12-31128.70M+0.5%2024-02-22From 2021-01-01
2020-12-31128.09M-0.5%2023-02-22From 2020-01-01
2019-12-31128.76M-0.9%2022-02-23From 2019-01-01
2018-12-31129.99M+0.3%2021-02-24From 2018-01-01
2017-12-31129.54M-0.3%2020-02-19From 2017-01-01
2016-12-31129.97M-1.8%2019-02-20From 2016-01-01
2015-12-31132.30M-1.0%2018-02-21From 2015-01-01
2014-12-31133.64M-0.1%2017-02-22From 2014-01-01
2013-12-31133.78M+0.4%2016-02-24From 2013-01-01
2012-12-31133.28M+101.0%2015-02-25From 2012-01-01
2011-12-3166.30M+0.9%2014-02-21From 2011-01-01
2010-12-3165.68M+0.4%2013-02-22From 2010-01-01
2009-12-3165.42M—2012-02-23From 2009-01-01