ATMOS ENERGY CORP (ATO) Institutional Ownership
ATO is currently held by 3 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $33.05M based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026.
The largest disclosed holder is Renaissance Technologies LLC, which reported ownership valued at approximately $30.81M in its March 31, 2026 13F filing. Based on current market prices and the latest disclosed share count, Renaissance Technologies LLC's ATO position is now estimated to be worth approximately $28.30M, representing an estimated loss of -8.16% since the filing period.
Major shareholders tracked on this page include Renaissance Technologies LLC, Sequoia Financial Advisors, Cullen Value Fund, and other prominent asset managers. Collectively, these investors account for approximately 100% of the total disclosed value among the investors covered in this analysis.
This page tracks asset manager ownership trends, hedge fund exposure, portfolio concentration, historical 13F filings, and estimated holding performance to help investors analyze smart money sentiment toward ATMOS ENERGY CORP (ATO).
Institutional Ownership Trend
| Portfolio quarter | Institutional holders | Total reported value | Total shares |
|---|---|---|---|
| Q1 2026 | 3 | $33,047,390 | 178,905 |
| Q4 2025 | 3 | $10,974,163 | 65,474 |
| Q3 2025 | 3 | $14,587,039 | 85,434 |
| Q2 2025 | 3 | $4,872,508 | 31,617 |
| Q1 2025 | 3 | $15,711,073 | 101,637 |
| Q4 2024 | 3 | $2,847,669 | 20,447 |
| Q3 2024 | 1 | $6,880,016 | 49,600 |
| Q2 2024 | 2 | $25,827,360 | 221,409 |
| Q1 2024 | 2 | $1,919 | 16,140 |
| Q4 2023 | 1 | $317 | 2,733 |
| Q3 2022 | 2 | $39,289 | 385,756 |
| Q2 2022 | 1 | $43,584 | 388,800 |
Related ATO Institutional Insights:
- ATO Institutional Ownership & Insiders Activity
- ATO Institutional Ownership & 13F Activity
- ATO Top Institutional Shareholders
- ATO Institutional Buying Activity
- ATO Institutional Selling Activity
- Utilities Sector Institutional Ownership
- Utilities Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Utilities Stocks By Institutional Investors
- Most Sold Utilities Stocks By Institutional Investors
- ATO Insider Trading & SEC Form 4 Activity
- Top Institutional Investor Stock Rankings