TickerFacts.

Westlake Corp (WLK): Weighted Average Diluted Shares

Annual figures by period end, from SEC filings.

Stock splits: 2-for-1, first reflected in a filing dated 2014-05-06. Figures are as filed: per-share figures and share counts last reported before a split are on the old share basis, so changes and growth rates across a split are not shown. Splits are read from the filings' own restatements, so a share conversion in a merger or reorganization shows up the same way.

128.26M
Year ended 2025-12-31
-0.2%
3-year compound annual growth
0.0%
5-year compound annual growth
-0.3%
10-year compound annual growth
133.78M2009-12-31: 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
2009-12-31 Weighted Average Diluted Shares (shares) 2025-12-31

Paler bars were last filed before a stock split, on the old share basis.

Period endedWeighted Average Diluted SharesChange YoYSource filing
2025-12-31128.26M-0.7%2026-02-26, From 2025-01-01
2024-12-31129.21M+0.5%2026-02-26, From 2024-01-01
2023-12-31128.60M-0.2%2026-02-26, From 2023-01-01
2022-12-31128.85M+0.1%2025-02-25, From 2022-01-01
2021-12-31128.70M+0.5%2024-02-22, From 2021-01-01
2020-12-31128.09M-0.5%2023-02-22, From 2020-01-01
2019-12-31128.76M-0.9%2022-02-23, From 2019-01-01
2018-12-31129.99M+0.3%2021-02-24, From 2018-01-01
2017-12-31129.54M-0.3%2020-02-19, From 2017-01-01
2016-12-31129.97M-1.8%2019-02-20, From 2016-01-01
2015-12-31132.30M-1.0%2018-02-21, From 2015-01-01
2014-12-31133.64M-0.1%2017-02-22, From 2014-01-01
2013-12-31133.78M+0.4%2016-02-24, From 2013-01-01
2012-12-31133.28Mn/c2015-02-25, From 2012-01-01
2011-12-3166.30M+0.9%2014-02-21, From 2011-01-01
2010-12-3165.68M+0.4%2013-02-22, From 2010-01-01
2009-12-3165.42Mn/a2012-02-23, From 2009-01-01