ATMOS ENERGY CORP (ATO) Institutional Ownership and Insiders Activity

ATMOS ENERGY CORP (ATO) is widely held by institutional investors, with 3 tracked firms reporting positions valued at approximately $32.85M based on SEC Form 13F filings for the quarter ended June 30, 2026.

Renaissance Technologies LLC is the largest disclosed holder, reporting approximately $30.81M in ATO holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Renaissance Technologies LLC representing the majority of disclosed value.

Recent insider activity includes 1 tracked Form 4 transaction over the last three months, reflecting ongoing executive and director trading activity.