Ostrum Asset Management’s Atmos Energy ATO Stock Holding History

Ostrum Asset 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 Q1	$679K	Sell	3,677 -2,587	-41%	-$457K	0.04%	273
2025 Q4	$1.05M	Sell	6,264 -2,076	-25%	-$359K	0.05%	260
2025 Q3	$1.42M	Buy	8,340 +2,136	+34%	+$345K	0.06%	243
2025 Q2	$956K	Sell	6,204 -3,709	-37%	-$576K	0.04%	315
2025 Q1	$1.53M	Sell	9,913 -6,758	-41%	-$986K	0.08%	220
2024 Q4	$2.32M	Sell	16,671 -8,043	-33%	-$1.14M	0.2%	162
2024 Q3	$3.43M	Buy	24,714 +4,683	+23%	+$602K	0.28%	103
2024 Q2	$2.34M	Sell	20,031 -1,557	-7%	-$181K	0.2%	170
2024 Q1	$2.57M	Buy	21,588 +2,443	+13%	+$280K	0.2%	172
2023 Q4	$2.22M	Buy	19,145 +1,597	+9%	+$178K	0.19%	176
2023 Q3	$1.86M	Sell	17,548 -2,833	-14%	-$331K	0.17%	196
2023 Q2	$2.37M	Buy	20,381 +18	+0.1%	+$2.08K	0.2%	169
2023 Q1	$2.29M	Buy	+20,363	New	+$2.32M	0.2%	177

Other funds holding ATO

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

Aristotle Capital Management Los Angeles, California $47.8B AUM 13.38% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

Ostrum Asset Management's ATO Position: Q1 2026 in Review

Ostrum Asset Management reduced its Atmos Energy (ATO) stake by 41% in Q1 2026, selling an estimated $457K and leaving 3,677 shares worth $679K. The position accounts for 0.04% of the portfolio, ranked #273.

Ostrum Asset Management first reported a position in ATO in Q1 2023 and has held it in 13 quarters since. The position peaked at $3.43M in Q3 2024. 1,012 funds tracked by Wall St. Rank hold ATO as of Q1 2026.

Ostrum Asset Management held 3,677 shares of Atmos Energy worth $679K as of Q1 2026.
Ostrum Asset Management sold 2,587 Atmos Energy shares in Q1 2026, an estimated $457K.
Atmos Energy made up 0.04% of Ostrum Asset Management's portfolio in Q1 2026, its #273 holding.
Ostrum Asset Management first reported a position in Atmos Energy in Q1 2023 and has held it in 13 quarters since.
Ostrum Asset Management's Atmos Energy position peaked at $3.43M in Q3 2024.
1,012 funds tracked by Wall St. Rank held Atmos Energy as of Q1 2026.

Based on Ostrum Asset Management's 13F filing for Q1 2026, filed 14 May 2026.