ATO · Insider trading · 13F holders · Congress trades
Atmos Energy Corp (ATO)
Who is buying and selling ATO: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 62
- Insider buys, 90 days
- $50K
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 3
ATO at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 ATO insider filed 1 open-market purchase worth $50K on SEC Form 4.
- 62 13F filers hold ATO among their 50 largest positions, worth $2.3B combined, including Steve Cohen. The biggest bets by portfolio weight are Sfmg, LLC (11.1%), Harrison Street Private Wealth LLC (6.2%) and Nilsine Partners, LLC (5.8%). In their latest 13Fs, 0 managers opened a new position and 15 added to one.
- Members of Congress have disclosed 9 ATO trades since 2020, 2 purchases and 1 sale in the past year; the latest was John Boozman (R-AR), selling $1K–15K on Jun 12, 2026.
- ATO last closed at $171.07 on Oct 29, 2026.
ATO insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 ATO insider filed 1 open-market purchase worth $50K on SEC Form 4.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 12, 2026 | Ware William James | Director | Buy | 300 | $167.59 | $50K | SEC |
Who owns ATO? Hedge funds and superinvestors
62 13F filers hold ATO among their 50 largest positions, worth $2.3B combined, including Steve Cohen. The biggest bets by portfolio weight are Sfmg, LLC (11.1%), Harrison Street Private Wealth LLC (6.2%) and Nilsine Partners, LLC (5.8%). In their latest 13Fs, 0 managers opened a new position and 15 added to one.
Superinvestors holding ATO: Steve Cohen 0.4%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Qube Research & Technologies LtdHedge fund | 0.4% | $368.1M | 2,136,532 | — | Q2 2026 |
| Steve CohenHedge fund | 0.4% | $234.5M | 1,361,162 | — | Q2 2026 |
| GQG Partners LLCMutual fund manager | 0.4% | $202.4M | 1,175,136 | +32.5% shares | Q2 2026 |
| Sfmg, LLCWealth manager | 11.1% | $182.7M | 1,060,369 | +0.2% shares | Q2 2026 |
| Perpetual LtdInvestment manager | 2.7% | $177.2M | 1,132,448 | -0.1% shares | Q3 2026 |
| Cbre Investment Management Listed Real Assets LLCAsset manager | 2.4% | $172.2M | 999,550 | +31.9% shares | Q2 2026 |
| Silvercrest Asset Management Group LLCWealth manager | 0.8% | $117.6M | 682,414 | -3.5% shares | Q2 2026 |
| Duff & Phelps Investment Management CoMutual fund manager | 1.0% | $109.9M | 637,725 | +4.9% shares | Q2 2026 |
| Ontario Teachers Pension Plan BoardPension fund | 0.6% | $101.0M | 586,175 | — | Q2 2026 |
| Nilsine Partners, LLCWealth manager | 5.8% | $83.6M | 485,268 | -1.2% shares | Q2 2026 |
| Energy Income Partners, LLCMutual fund manager | 1.1% | $70.7M | 410,650 | +13.0% shares | Q2 2026 |
| Benjamin Edwards IncInvestment manager | 0.5% | $58.8M | 341,125 | +0.5% shares | Q2 2026 |
| Munich Reinsurance Co Stock Corp in MunichInsurance company | 0.9% | $43.4M | 251,761 | +0.0% shares | Q2 2026 |
| Partners Group Holding AGHedge fund | 2.7% | $39.8M | 230,844 | -3.1% shares | Q2 2026 |
| Aventail Capital Group, LPHedge fund | 2.0% | $35.0M | 202,896 | -18.1% shares | Q2 2026 |
| Dearborn Partners LLCInvestment manager | 1.9% | $34.8M | 188,269 | +0.0% shares | Q2 2026 |
| Magellan Asset Management LtdAsset manager | 0.7% | $32.2M | 186,934 | +3.1% shares | Q2 2026 |
| Maryland State Retirement & Pension SystemPension fund | 0.5% | $28.8M | 167,136 | +6.4% shares | Q2 2026 |
| Hennessy Advisors IncMutual fund manager | 0.9% | $23.2M | 148,286 | +0.0% shares | Q3 2026 |
| Sienna GestionInvestment manager | 1.2% | $20.8M | 117,688 | -7.3% shares | Q2 2026 |
| Occudo Quantitative Strategies LPHedge fund | 1.0% | $18.7M | 108,671 | — | Q2 2026 |
| Cramer Rosenthal Mcglynn LLCAsset manager | 0.8% | $16.7M | 97,107 | +8.0% shares | Q2 2026 |
| Campbell & CO Investment Adviser LLCHedge fund | 0.8% | $14.5M | 84,361 | +70.5% shares | Q2 2026 |
| Edgestream Partners, L.P.Hedge fund | 0.4% | $14.5M | 84,088 | — | Q2 2026 |
| Paradiem, LLCWealth manager | 3.1% | $14.2M | 82,418 | -5.4% shares | Q2 2026 |
| Mattern Capital Management, LLCWealth manager | 1.2% | $10.2M | 59,371 | -0.6% shares | Q2 2026 |
| Bcm Advisors, LLCWealth manager | 1.4% | $7.4M | 41,319 | +0.0% shares | Q2 2026 |
| Westerkirk Capital Inc.Asset manager | 0.6% | $6.6M | 38,561 | +0.0% shares | Q2 2026 |
| TrueMark Investments, LLCMutual fund manager | 0.8% | $6.6M | 38,400 | +15.0% shares | Q2 2026 |
| Opal Capital LLCMutual fund manager | 1.2% | $6.6M | 38,335 | +15.1% shares | Q2 2026 |
The 30 largest of 62 positions, by value. Each manager counts with its latest 13F (Q3 2026: 12, Q2 2026: 50). Screen ATO in the grand portfolio →
ATO stock trades by members of Congress
Members of Congress have disclosed 9 ATO trades since 2020, 2 purchases and 1 sale in the past year; the latest was John Boozman (R-AR), selling $1K–15K on Jun 12, 2026.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Jul 13, 2026 | John BoozmanR-AR · Senate | Sale | $1K–15K | Jun 12, 2026 | +1.1% |
| Jan 16, 2026 | Jared MoskowitzD-FL · House | Buy | $1K–15K | Dec 2, 2025 | +1.2% |
| Sep 12, 2025 | Rick W. AllenR-GA · House | Buy | $15K–50K | Aug 19, 2025 | +3.8% |
| Jul 9, 2025 | John BoozmanR-AR · Senate | Buy | $1K–15K | May 20, 2025 | +8.0% |
| Dec 9, 2024 | Jared MoskowitzD-FL · House | Buy | $1K–15K | Nov 8, 2024 | +19.4% |
| Aug 21, 2024 | Jared MoskowitzD-FL · House | Buy | $1K–15K | Sep 1, 2023 | +49.0% |
| Aug 6, 2024 | Jared MoskowitzD-FL · House | Buy | $1K–15K | Jul 5, 2024 | +50.2% |
| Apr 17, 2023 | Daniel S. GoldmanD-NY · House | Sale | $1K–15K | Mar 6, 2023 | +51.8% |
| Oct 9, 2020 | Dean PhillipsD-MN · House | Buy | $1K–15K | Sep 23, 2020 | +85.3% |
5 members have traded ATO: John Boozman, Jared Moskowitz, Rick W. Allen, Daniel S. Goldman, Dean Phillips.
ATO questions and answers
Are insiders buying ATO stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 ATO insider filed 1 open-market purchase worth $50K on SEC Form 4.
Which hedge funds own ATO?
62 13F filers hold ATO among their 50 largest positions, worth $2.3B combined, including Steve Cohen. The biggest bets by portfolio weight are Sfmg, LLC (11.1%), Harrison Street Private Wealth LLC (6.2%) and Nilsine Partners, LLC (5.8%). In their latest 13Fs, 0 managers opened a new position and 15 added to one.
Has Congress traded ATO?
Members of Congress have disclosed 9 ATO trades since 2020, 2 purchases and 1 sale in the past year; the latest was John Boozman (R-AR), selling $1K–15K on Jun 12, 2026.
Who is the largest holder of ATO?
Among 13F filers, Qube Research & Technologies Ltd reports the largest ATO position, $368.1M (2,136,532 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Sfmg, LLC's: 11.1% of its portfolio.
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