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Mattern Capital Management’s Atmos Energy ATO Stock Holding History

Mattern Capital Management’s Portfolio ATO Stock Details ATO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$10.2M Sell
59,371
-335
-0.6% -$60K 1.19% 34
2026
Q1 		$11M Buy
59,706
+1,180
+2% +$209K 1.32% 18
2025
Q4 		$9.81M Sell
58,526
-1,540
-3% -$266K 1.16% 28
2025
Q3 		$10.3M Sell
60,066
-1,524
-2% -$246K 1.21% 23
2025
Q2 		$9.49M Buy
61,590
+99
+0.2% +$15.4K 1.14% 37
2025
Q1 		$9.51M Sell
61,491
-3,500
-5% -$511K 1.21% 28
2024
Q4 		$9.05M Sell
64,991
-1,420
-2% -$202K 1.18% 37
2024
Q3 		$9.21M Sell
66,411
-172
-0.3% -$22.1K 1.16% 39
2024
Q2 		$7.77M Sell
66,583
-84
-0.1% -$9.79K 1.07% 53
2024
Q1 		$7.92M Buy
66,667
+4,563
+7% +$523K 1.08% 58
2023
Q4 		$7.2M Buy
62,104
+2,061
+3% +$230K 1.05% 61
2023
Q3 		$6.36M Buy
60,043
+2,582
+4% +$301K 1.03% 59
2023
Q2 		$6.69M Buy
57,461
+1,697
+3% +$196K 1.09% 46
2023
Q1 		$6.27M Buy
55,764
+1,226
+2% +$139K 1.11% 47
2022
Q4 		$6.11M Buy
54,538
+543
+1% +$59.7K 1.13% 45
2022
Q3 		$5.5M Sell
53,995
-240
-0.4% -$27.5K 1.15% 39
2022
Q2 		$6.08M Sell
54,235
-3,106
-5% -$356K 1.2% 32
2022
Q1 		$6.85M Buy
57,341
+800
+1% +$87.4K 1.23% 29
2021
Q4 		$5.92M Buy
56,541
+4,741
+9% +$449K 1.04% 58
2021
Q3 		$4.57M Buy
51,800
+3,722
+8% +$360K 0.9% 75
2021
Q2 		$4.62M Buy
48,078
+3,718
+8% +$373K 0.91% 72
2021
Q1 		$4.38M Buy
44,360
+4,259
+11% +$388K 0.95% 74
2020
Q4 		$3.83M Buy
40,101
+5,908
+17% +$570K 0.91% 76
2020
Q3 		$3.27M Buy
34,193
+4,888
+17% +$488K 0.85% 77
2020
Q2 		$2.92M Buy
29,305
+9,235
+46% +$931K 0.85% 78
2020
Q1 		$1.99M Buy
+20,070
New +$2.21M 0.68% 81

Other funds holding ATO

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Mattern Capital Management's ATO Position: Q2 2026 in Review

Mattern Capital Management reduced its Atmos Energy (ATO) stake by 0.56% in Q2 2026, selling an estimated $60K and leaving 59,371 shares worth $10.2M. The position accounts for 1.19% of the portfolio, ranked #34.

Mattern Capital Management first reported a position in ATO in Q1 2020 and has held it in 26 quarters since. The position peaked at $11M in Q1 2026. 1,041 funds tracked by Wall St. Rank hold ATO as of Q2 2026.

  • Mattern Capital Management held 59,371 shares of Atmos Energy worth $10.2M as of Q2 2026.
  • Mattern Capital Management sold 335 Atmos Energy shares in Q2 2026, an estimated $60K.
  • Atmos Energy made up 1.19% of Mattern Capital Management's portfolio in Q2 2026, its #34 holding.
  • Mattern Capital Management first reported a position in Atmos Energy in Q1 2020 and has held it in 26 quarters since.
  • Mattern Capital Management's Atmos Energy position peaked at $11M in Q1 2026.
  • 1,041 funds tracked by Wall St. Rank held Atmos Energy as of Q2 2026.

Based on Mattern Capital Management's 13F filing for Q2 2026, filed 24 Jul 2026.