Assenagon Asset Management Reduces Stake in Atmos Energy

Institutional investor sells nearly half its shares in the natural gas utility company

Mar. 27, 2026 at 7:22am

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Assenagon Asset Management S.A., an institutional investor, decreased its holdings in Atmos Energy Corporation (NYSE:ATO) by 45.8% in the fourth quarter, according to a recent SEC filing. The firm now owns 114,386 shares of the utilities provider's stock, down from 211,221 shares previously.

Why it matters

Atmos Energy is a major natural gas utility serving customers across the United States. Changes in institutional ownership can provide insights into investor sentiment and market trends surrounding the company.

The details

Assenagon Asset Management sold 96,835 shares of Atmos Energy stock during the fourth quarter. The firm now owns a 0.07% stake in the company, down from 0.13% previously. No specific reasons were given for the reduction in Assenagon's Atmos Energy holdings.

  • Assenagon Asset Management filed its 13F report for the fourth quarter of 2025 on March 27, 2026.

The players

Assenagon Asset Management S.A.

An institutional investment firm that manages assets for clients.

Atmos Energy Corporation

A U.S. natural gas utility company headquartered in Dallas, Texas.

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The takeaway

This filing indicates that one major institutional investor has reduced its position in Atmos Energy, though the reasons behind the move are unclear. Investors will likely monitor any further changes in institutional ownership of the natural gas utility company.