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Of the 13 tracked institutions holding ATO, 7 have a 3-year clone track record — 7 of them beat the S&P. Average holder's clone alpha: +5.3pt. It's a gauge of who owns the name, not just how many.
Among the 13 tracked institutional investors we monitor, ATO (ATMOS ENERGY CORP) is held with a combined value of $12.28B across 68,438,682 shares. The largest holder is VANGUARD GROUP INC with a position worth $3.53B (0.05% of their portfolio). Capital Research Global Investors opened a new position in the most recent quarter. 10 funds increased their holdings. 2 funds reduced their position.
Total Institutional Value
$12.28B
Total Shares Held
68,438,682
Institutional Holders
13
% of Shares Outstanding
41.0%
of 166.92M shares · SEC 2026-05-01
Days to Cover
3.2-3.2%
3.50M shares short · FINRA 2026-07-15
Tracked 13F institutions hold 41.0% of ATO's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-05-01), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $3.53B | 0.05% | +1.3% |
| 2 | BlackRock, Inc. | $3.22B | 0.06% | +2.5% |
| 3 | STATE STREET CORP | $2.10B | 0.07% | +5.4% |
| 4 | WELLINGTON MANAGEMENT GROUP LLP | $1.78B | 0.33% | -3.6% |
| 5 | Capital Research Global Investors | $740.84M | 0.11% | New |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | $501.54M | 0.06% | -58.8% |
| 7 | AQR CAPITAL MANAGEMENT LLC | $150.86M | 0.07% | +62.4% |
| 8 | CITADEL ADVISORS LLC | $138.84M | 0.10% | +41.3% |
| 9 | MILLENNIUM MANAGEMENT LLC | $48.29M | 0.02% | +290.3% |
| 10 | RENAISSANCE TECHNOLOGIES LLC | $30.81M | 0.05% | +220.8% |
| Member | Type | Date |
|---|---|---|
| John Boozman | Sell | Jun 12, 2026 |
| Jared Moskowitz | Buy | Dec 2, 2025 |
| Richard W. Allen | Buy | Aug 19, 2025 |
| John Boozman | Buy |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of ATO with a position worth $3.53B, representing 0.05% of their portfolio. In total, 13 institutional investors hold ATO with a combined value of $12.28B.
In the most recent quarter, 1 fund opened a new position in ATO. Additionally, 10 increased their holdings and 2 reduced their positions.
Institutional investors hold $12.28B worth of ATO stock across 13 positions. The largest institutional holder is VANGUARD GROUP INC with $3.53B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ATO, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ATO positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| May 20, 2025 |
| Jared Moskowitz | Buy | Nov 8, 2024 |
| Jared Moskowitz | Buy | Jul 5, 2024 |
| Jared Moskowitz | Buy | Sep 1, 2023 |
Last Close
$179.22
2026-07-24
YTD
+5.8%
65% of 52-week range
