NYSE : ATO
-$0.05 (-0.03%)
3.89%
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0.00
change: -10.2834 | last: 0.10281.07B
| Filing Date | Reporting Person | Amount Beneficially Owned | % of Class |
|---|---|---|---|
| 2026-05-14 | Capital International Investors | 7.74M | 4.70% |
| 2026-04-29 | Vanguard Capital Management | 12.47M | 7.53% |
| 2026-04-28 | Vanguard Portfolio Management | 9.31M | 5.62% |
| 2026-03-26 | The Vanguard Group | - | 0.00% |
| 2025-12-04 | BlackRock, Inc. | 16.2M | 10.00% |
| 2025-11-12 | Wellington Management Group LLP | 10.47M | 6.50% |
| 2025-08-14 | T. Rowe Price Associates, Inc. | 7.75M | 4.90% |
| 2025-05-15 | Aristotle Capital Management, LLC | 7.8M | 4.91% |
| 2025-05-14 | T. Rowe Price Associates, Inc. | 7.89M | 5.00% |
| 2025-05-13 | Capital International Investors | 10.53M | 6.60% |
| 2025-05-12 | Wellington Management Group LLP | 12.32M | 7.80% |
| 2025-02-14 | Capital International Investors | 8.62M | 5.50% |
| 2024-11-14 | 52-0556948 | 8.74M | 5.60% |
| 2023-02-14 | Aristotle Capital Management, LLC | 9.52M | 6.76% |
| 2023-02-06 | Wellington Investment Advisors Holdings LLP | 8.49M | 6.02% |
| 2023-02-06 | Wellington Management Company LLP | 7.99M | 5.67% |
| 2023-02-06 | Wellington Management Group LLP | 8.49M | 6.02% |
| 2023-02-06 | Wellington Group Holdings LLP | 8.49M | 6.02% |
| 2023-01-25 | (1) BlackRock, Inc. | 12.74M | 9.00% |
| 2022-02-14 | STATE STREET CORPORATION | 10.26M | 7.73% |
| 2022-02-09 | The Vanguard Group - 23-1945930 | 16.41M | 12.37% |
| 2022-01-27 | (1) BlackRock, Inc. | 13.91M | 10.50% |
| 2022-01-25 | (1) BlackRock, Inc. | 13.91M | 10.50% |
| 2021-02-12 | STATE STREET CORPORATION | 8.52M | 6.76% |
| 2021-02-10 | The Vanguard Group - 23-1945930 | 14.92M | 11.84% |
| 2021-01-27 | (1) BlackRock, Inc. | 13.26M | 10.50% |
| 2020-06-09 | (1) BlackRock, Inc. | 12.96M | 10.60% |
| 2020-02-14 | 52-0556948 | 5.42M | 4.40% |
| 2020-02-13 | STATE STREET CORPORATION | 8.61M | 7.04% |
| 2020-02-11 | The Vanguard Group - 23-1945930 | 14.88M | 12.17% |
| 2020-02-05 | (1) BlackRock, Inc. | 10.94M | 9.00% |
| 2019-02-14 | 52-0556948 | 5.86M | 5.00% |
| 2019-01-30 | (1) BlackRock, Inc. | 13.53M | 11.60% |
| 2019-01-24 | (1) BlackRock, Inc. | 13.53M | 11.60% |
| 2018-09-07 | (1) BlackRock, Inc. | 11.15M | 10.00% |
| 2018-02-14 | STATE STREET CORPORATION | 6.27M | 5.65% |
| 2018-01-29 | (1) BlackRock, Inc. | 9.99M | 9.00% |
| 2017-01-19 | (1) BlackRock, Inc. | 9.02M | 8.60% |
| 2016-01-25 | (1) BlackRock, Inc. | 7.02M | 6.90% |
| 2015-02-13 | Abigail P. Johnson | 4.03M | 3.99% |
| 2015-02-13 | FMR LLC | 4.03M | 3.99% |
| 2015-02-13 | Edward C. Johnson 3d | 4.03M | 3.99% |
| 2015-01-30 | (1) BlackRock, Inc. | 6.45M | 6.40% |
| 2014-02-14 | FMR LLC | 5.25M | 5.77% |
| 2014-02-03 | STATE STREET CORPORATION | 6.48M | 7.10% |
| 2014-01-28 | (1) BlackRock, Inc. | 5.58M | 6.10% |
| 2013-02-08 | (1) BlackRock, Inc. | 5.23M | 5.78% |
| 2012-02-13 | (1) BlackRock, Inc. | 5.61M | 6.20% |
| 2011-02-02 | (1) BlackRock, Inc. | 6.62M | 7.32% |
| 2010-01-08 | (1) BlackRock, Inc. | 10.99M | 11.83% |
| 2005-02-14 | Franklin Resources, Inc. (13-2670991) | 4.06M | 5.10% |
| 2002-02-11 | Massachusetts Financial Services Company ("MFS") | 1.47M | 3.60% |
| 2001-02-09 | Massachusetts Financial Services Company ("MFS") | 1.87M | 5.90% |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2025-09-30 | $170.75 | 158.94M | $27.14B | $203.8M | $9.3B | $36.24B |
| 2024-09-30 | $138.71 | 152.51M | $21.15B | $307.34M | $8.13B | $28.98B |
| 2023-09-30 | $105.93 | 145.12M | $15.37B | $15.4M | $7.12B | $22.48B |
| 2022-09-30 | $101.85 | 137.83M | $14.04B | $51.55M | $8.37B | $22.36B |
| 2021-09-30 | $88.20 | 129.78M | $11.45B | $116.72M | $7.56B | $18.89B |
| 2020-09-30 | $95.59 | 122.79M | $11.74B | $20.81M | $4.77B | $16.49B |
| 2019-09-30 | $113.89 | 117.2M | $13.35B | $24.55M | $3.99B | $17.32B |
| 2018-09-30 | $92.75 | 111.01M | $10.3B | $13.77M | $3.64B | $13.93B |
| 2017-09-30 | $83.84 | 106.1M | $8.9B | $26.41M | $3.51B | $12.38B |
| 2016-09-30 | $74.47 | 103.52M | $7.71B | $47.53M | $3.27B | $10.93B |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2026-03-31 | $184.72 | 166.46M | $30.75B | $127.11M | $9.63B | $40.25B |
| 2025-12-31 | $167.63 | 162.73M | $27.28B | $371.51M | $9.63B | $36.54B |
| 2025-09-30 | $170.75 | 158.94M | $27.14B | $203.8M | $9.3B | $36.24B |
| 2025-06-30 | $154.11 | 159.28M | $24.55B | $709.38M | $9B | $32.84B |
| 2025-03-31 | $154.58 | 159.18M | $24.61B | $543.5M | $8.51B | $32.57B |
| 2024-12-31 | $139.27 | 156.3M | $21.77B | $584.54M | $8.51B | $29.69B |
| 2024-09-30 | $138.71 | 152.91M | $21.21B | $307.34M | $8.13B | $29.03B |
| 2024-06-30 | $115.98 | 153.31M | $17.78B | $674.62M | $7.88B | $24.98B |
| 2024-03-31 | $117.85 | 151.27M | $17.83B | $674.62M | $7.88B | $25.03B |
| 2023-12-31 | $115.90 | 149.8M | $17.36B | $278.32M | $7.54B | $24.62B |
| 2023-09-30 | $105.93 | 148.67M | $15.75B | $15.4M | $7.12B | $22.86B |
| 2023-06-30 | $116.34 | 146.05M | $16.99B | $56.24M | $6.65B | $23.59B |