American Century Companies Inc. Increases Stake in NorthWestern Energy Group

Investment firm adds 16,602 shares to its holdings in the utility company.

Published on Mar. 3, 2026

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American Century Companies Inc. has increased its stake in NorthWestern Energy Group, Inc. (NYSE:NWE) by 0.6% during the third quarter, according to a filing with the Securities and Exchange Commission. The investment firm now owns 2,968,816 shares of the company's stock, representing about 4.83% of NorthWestern Energy Group.

Why it matters

This transaction reflects American Century's continued confidence in NorthWestern Energy Group, a major utility provider serving customers across Montana, South Dakota, and Nebraska. As a large institutional investor, American Century's increased stake could signal positive sentiment about the company's future performance and growth prospects.

The details

American Century Companies acquired an additional 16,602 shares of NorthWestern Energy Group during the third quarter, bringing its total holdings to nearly 3 million shares. The investment firm now owns approximately 4.83% of the utility company's outstanding stock.

  • The share purchase occurred during the third quarter of the year.
  • American Century Companies filed the disclosure with the SEC on March 1, 2026.

The players

American Century Companies Inc.

An investment management firm based in Kansas City, Missouri that oversees over $200 billion in assets.

NorthWestern Energy Group, Inc.

A regulated energy utility company headquartered in Sioux Falls, South Dakota that delivers electricity and natural gas to customers across Montana, South Dakota, and Nebraska.

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The takeaway

American Century's increased stake in NorthWestern Energy Group suggests the investment firm sees long-term value in the utility company's operations and growth potential. This transaction underscores the continued institutional investor interest in the regulated energy sector.