Atmos Energy Corporation· ATO

🇺🇸 US · LargeSP500NYSE

UtilitiesRegulated GasWebsite

Price: $169.92
Day: -0.02%
Mkt Cap: $28.36B
52W Range: $160.10 – $192.51
Volume: 690.4K
Beta: 0.60

D55D FrameworkQuarterly Data

Holdings Analysis

Insider activity, institutional flows, and fund ownership.

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Atmos Energy Corporation

ATO|Utilities|Regulated Gas

Current price: $170

Smart Money

Dimension 5 of 5

Insider Activity, Q3 2026

Latest scored quarter, net flow, and top transactions by value

Net dollar flow$50.3K

Net share flow+300

Purchases1 ($50.3K)

Sales0 ($0)

Top Notable Transactions

Insider

Type

Value

Date

COCKLIN KIM R

Sale

$2.3M

May 14

COCKLIN KIM R

Sale

$1.7M

Mar 27

COCKLIN KIM R

Sale

$1.5M

Aug 7

Institutional Ownership, Q2 2026

Ownership share, position changes, share flow, and top holders

Ownership98.2%

13F share flow-4.9%

Investors holding1.0K

+675 adding-460 reducing

135

540

335

125

New 135Inc 540Red 335Closed 125

Top Institutional Holders

Institution

Value

Change

BLACKROCK, INC.

$2.6B

-12.7%

STATE STREET CORP

$2.0B

+0.1%

VANGUARD CAPITAL MANAGEMENT LLC

$1.9B

+1.4%

WELLINGTON MANAGEMENT GROUP LLP

$1.6B

-4.8%

ETF & Mutual Fund Activity, Q2 2026

Latest meaningful quarter: fund-by-fund buying / unchanged / selling

Funds reporting231

Total shares held32.7M

Share flow-8.9%

66 buying57 selling

108

Buying 66Unchanged 108Selling 57

Top Fund Holders

Fund

Weight

Change

ADAMS DIVERSIFIED EQUITY FUND, INC.

97.3K

23.33%

Guardian Variable Products Trust

75.5K

0.58%

-4.3K

Principal Exchange-Traded Funds

66.0K

0.22%

+51.9K

PACIFIC SELECT FUND

60.8K

0.01%

-1.5K

See the complete picture

The full 5D Framework: Business Quality · Peer Comparison · Valuation · Analyst Sentiment · Smart Money

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Generated August 17, 2026

For educational purposes only. Not financial advice. Data may be delayed or incomplete.

Smart Money Sentiment

ATO Smart Money Sentiment Score

A weighted 1-5 sentiment score across three smart money signals.

Smart Money

3.4/5

Neutral

Weighted across 3 components

Component Breakdown (3 of 3 available)

Insider Activity

40% weight

Institutional Flow

50% weight

+36

Fund Flow

10% weight

Overall Smart Money sentiment of 3.4/5 (Neutral) based on a weighted combination of 3 components. Insider activity uses a relative-baseline comparison against the stock's own history; institutional flow tracks position momentum and 13F share changes; fund flow measures ETF / mutual-fund buying vs selling. Higher scores indicate stronger bullish sentiment from professional investors.Last updated August 16, 2026.

Insider Trading Activity

Insider trading analysis comparing the latest quarter against the stock's own historical baseline.

Insider Activity for ATO

Net insider share flow by quarter (C-suite & director purchases minus sales)

Neutral

Light insider buying in Q3 2026

Modest: 1 purchase totaling $50.3K (300 shares)

Limited history to compare against

Buying is rare, only seen in 1 of 7 quarters

Notable Recent Transactions, ATO

Top 8 highest-value recent insider trades

COCKLIN KIM R

Director

Sell

15,000 shares at $150.98

May 14, 2025$2.26M

COCKLIN KIM R

Director

Sell

15,000 shares at $116.46

Mar 27, 2024$1.75M

COCKLIN KIM R

Director

Sell

12,500 shares at $117.44

Aug 7, 2023$1.47M

COCKLIN KIM R

Director

Sell

12,500 shares at $117.14

Feb 6, 2023$1.46M

COCKLIN KIM R

Director

Sell

12,500 shares at $114.54

May 1, 2023$1.43M

COCKLIN KIM R

Director

Sell

12,500 shares at $110.99

Nov 6, 2023$1.39M

ROBBINS J MATT

Officer

Sell

4,500 shares at $101.12

Aug 11, 2021$455.05K

Geiser Edward

Director

Buy

2,500 shares at $144.89

Nov 11, 2024$362.22K

Institutional Ownership Analysis

Institutional ownership analysis with position momentum, 13F share flow, and ownership percentage trends.

Institutional Ownership Over Time for ATO

Total dollar value invested by institutions each quarter

Bullish Signal

Institutions accumulating in Q2 2026

98.2% institutional ownership

Slight accumulation: 675 adding vs 460 reducing

13F shares increased by 2.1%, a notable change

Momentum weakening from prior quarter

Position Changes

Q2 2026: how are institutions adjusting their positions?

+675 growing-460 shrinkingNet: +215

135

540

335

125

New (135)

Increased (540)

Reduced (335)

Closed (125)

Top Institutional Holders, ATO

Largest 8 institutional positions by ownership percentage as of Q2 2026

BLACKROCK, INC.

15.2M

$2.6B

Ownership

9.15%

-12.7%

STATE STREET CORP

11.4M

$2.0B

Ownership

6.84%

+0.1%

VANGUARD CAPITAL MANAGEMENT LLC

10.9M

$1.9B

Ownership

6.54%

+1.4%

WELLINGTON MANAGEMENT GROUP LLP

9.2M

$1.6B

Ownership

5.52%

-4.8%

CAPITAL INTERNATIONAL INVESTORS

7.5M

$1.3B

Ownership

4.50%

+2.1%

GEODE CAPITAL MANAGEMENT, LLC

4.5M

$770.3M

Ownership

2.70%

+3.5%

BANK OF AMERICA CORP /DE/

4.2M

$720.2M

Ownership

2.51%

-0.4%

INVESCO LTD.

3.2M

$546.7M

Ownership

1.91%

+5.5%

ETF and Mutual Fund Holdings

ETF and mutual fund activity breakdown showing buying vs selling funds, top fund holders, and detailed holdings.

Fund Activity

Q2 2026: 231 ETFs and mutual funds reporting

66 buying57 sellingNet: +9

108

Buying (66)

Unchanged (108)

Selling (57)

Neutral

Mixed fund activity in Q2 2026

231 ETFs and mutual funds reporting

66 buying vs 57 selling (balanced)

Top Fund Holders, ATO

Largest 8 ETF and mutual fund positions by shares held as of latest filing

ADAMS DIVERSIFIED EQUITY FUND, INC.

97.3K

Weight

23.33%

No change

Guardian Variable Products Trust

75.5K

Weight

0.58%

Decreased

Principal Exchange-Traded Funds

66.0K

Weight

0.22%

Increased

PACIFIC SELECT FUND

60.8K

Weight

0.01%

Decreased

LINCOLN VARIABLE INSURANCE PRODUCTS TRUST

41.2K

Weight

0.00%

Decreased

BAIRD FUNDS INC

6.4K

Weight

0.00%

No change

Absolute Shares Trust

3.3K

Weight

0.90%

No change

VOLUMETRIC FUND INC

2.3K

Weight

7.59%

No change

Atmos Energy Corporation· ATO

Holdings Analysis

Insider Trading Activity

1.3Transaction History25Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings163Most recent institutional positions with changes and valuations

ETF and Mutual Fund Holdings

3.3Fund Holdings Details460Most recent ETF and mutual fund holdings with share counts and weights

Search stocks

Holdings Analysis

Insider Trading Activity

1.3Transaction History25Real market purchases and sales onlyShow All Types

Institutional Ownership Analysis

2.4Detailed Holdings163Most recent institutional positions with changes and valuations

ETF and Mutual Fund Holdings

3.3Fund Holdings Details460Most recent ETF and mutual fund holdings with share counts and weights