Atmos Energy ATO Institutional Ownership

Atmos Energy Corp (NYSE:ATO) has 1,045 institutional investors that have filed 13F reports for the period ending June 2026.

• These investors held 97.7% of outstanding shares in June 2026, up from 95.6% in March 2026.
• They increased total shares held in Atmos Energy by 3.62% from the prior quarter, while the number of investors in ATO increased 19.98% year over year.
• During the quarter, 547 of these 1,045 funds increased positions in ATO, 342 reduced exposure, and 156 held steady.
• Institutional investors collectively held 164.55Mn shares in Atmos Energy as of June 2026, up by 5.74Mn shares quarter on quarter, and up 3.64Mn shares year over year.
• As of June 30, 2026, the biggest holder of Atmos Energy is BlackRock, Inc. at 15.24Mn shares, representing 9.05% of shares outstanding.
• The largest buyers of Atmos Energy for the quarter ending June 2026 were NORGES BANK (2.08Mn), Qube Research & Technologies Ltd (2.05Mn), AQR CAPITAL MANAGEMENT LLC (1.55Mn), Point72 Asset Management, L.P. (1.36Mn), Sixth Street Partners Management Company, L.P. (1.06Mn).
• The largest sales of ATO for the quarter ending June 2026 came from Aristotle Capital Management, LLC (4.83Mn), Capital Research Global Investors (2.5Mn), BlackRock, Inc. (2.21Mn), WELLINGTON MANAGEMENT GROUP LLP (465.68K), Sei Investments Co (320.36K).
• Atmos Energy's 10 largest shareholders as of June 2026 include BlackRock, Inc. (15.24Mn), State Street Corp (11.38Mn), VANGUARD CAPITAL MANAGEMENT LLC (10.89Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (9.36Mn), WELLINGTON MANAGEMENT GROUP LLP (9.19Mn), Capital International Investors (7.48Mn), GEODE CAPITAL MANAGEMENT, LLC (4.49Mn), Bank Of America Corp /De/ (4.18Mn), Invesco Ltd. (3.17Mn), Morgan Stanley (2.86Mn) per Business Quant data.