Atmos Energy Corporation (ATO) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for ATO. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 1,025 institutions reported holding ATO, with 160.7 million shares worth $27.7 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Vanguard | 22,075,949 | $3.8B | INCREASED |
| BlackRock | 15,237,564 | $2.6B | DECREASED |
| State Street | 11,380,060 | $2.0B | INCREASED |
| Wellington Management | 9,185,788 | $1.6B | DECREASED |
| Capital Group | 9,062,762 | $1.6B | DECREASED |
Recent Insider Trades
| Insider | Type | Shares | Value | Date |
|---|---|---|---|---|
| Edward Geiser (Director) | AWARD | 224 | $35K | 2026-10-01 |
| Rafael G Garza (Director) | AWARD | 77 | $12K | 2026-10-01 |
| Matt J Robbins (SR VP, HUMAN RESOURCES) | GIFT | 1,500 | 2026-09-15 | |
| James Henry Jeffries IV (Director) | AWARD | 1,000 | $167K | 2026-09-01 |
| William James Ware (Director) | BUY | 300 | $50K | 2026-08-11 |
Full institutional holdings, insider history, and congressional trades for Atmos Energy Corporation on SentiSense.