TickerFacts.

Axcelis Technologies Inc (ACLS): Weighted Average Diluted Shares

Annual figures by period end, from SEC filings.

Stock splits: 1-for-4, first reflected in a filing dated 2016-08-08. 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.

31.67M
Year ended 2025-12-31
-1.9%
3-year compound annual growth
-1.5%
5-year compound annual growth
+0.5%
10-year compound annual growth
109.10M2009-12-31: 103.59M2010-12-31: 104.52M2011-12-31: 109.10M2012-12-31: 107.62M2013-12-31: 108.87M2014-12-31: 27.86M2015-12-31: 30.23M2016-12-31: 30.95M2017-12-31: 33.44M2018-12-31: 34.00M2019-12-31: 33.83M2020-12-31: 34.13M2021-12-31: 34.27M2022-12-31: 33.54M2023-12-31: 33.16M2024-12-31: 32.70M2025-12-31: 31.67M31.67M
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
2025-12-3131.67M-3.2%2026-02-26, From 2025-01-01
2024-12-3132.70M-1.4%2026-02-26, From 2024-01-01
2023-12-3133.16M-1.1%2026-02-26, From 2023-01-01
2022-12-3133.54M-2.1%2025-02-28, From 2022-01-01
2021-12-3134.27M+0.4%2024-02-28, From 2021-01-01
2020-12-3134.13M+0.9%2023-02-24, From 2020-01-01
2019-12-3133.83M-0.5%2022-02-25, From 2019-01-01
2018-12-3134.00M+1.7%2021-02-26, From 2018-01-01
2017-12-3133.44M+8.0%2020-03-02, From 2017-01-01
2016-12-3130.95M+2.4%2019-03-11, From 2016-01-01
2015-12-3130.23M+8.5%2018-03-14, From 2015-01-01
2014-12-3127.86Mn/c2017-03-14, From 2014-01-01
2013-12-31108.87M+1.2%2016-03-04, From 2013-01-01
2012-12-31107.62M-1.4%2015-03-12, From 2012-01-01
2011-12-31109.10M+4.4%2014-03-03, From 2011-01-01
2010-12-31104.52M+0.9%2013-03-01, From 2010-01-01
2009-12-31103.59Mn/a2012-02-29, From 2009-01-01