American Century Companies Trims Northern Oil and Gas Stake

Investment firm reduces ownership in energy company by 4.8% in Q3

Published on Mar. 3, 2026

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American Century Companies Inc. reduced its stake in Northern Oil and Gas, Inc. (NYSE:NOG) by 4.8% in the third quarter of 2025, according to a recent SEC filing. The institutional investor now owns approximately 8.2 million shares, or 8.43% of the company's stock, valued at $204 million.

Why it matters

This transaction provides insight into the investment strategy and portfolio adjustments of a major institutional investor like American Century Companies. Changes in ownership stakes by large funds can signal broader market trends or shifts in sentiment around a particular stock or sector.

The details

In the third quarter, American Century Companies sold 416,328 shares of Northern Oil and Gas, reducing its total position to 8,226,100 shares. Northern Oil and Gas is an independent energy company focused on oil and gas exploration and development, primarily in the Williston Basin region of North Dakota and Montana.

  • American Century Companies filed the 13F report disclosing the stake reduction on March 1, 2026.

The players

American Century Companies Inc.

A major institutional investment management firm with over $200 billion in assets under management.

Northern Oil and Gas, Inc.

An independent energy company focused on oil and gas exploration and development in the Williston Basin region.

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The takeaway

This transaction highlights the ongoing portfolio adjustments and investment strategy shifts among major institutional investors like American Century Companies. The reduction in Northern Oil and Gas ownership could signal broader market views on the energy sector or the company's prospects, though further analysis would be needed to draw definitive conclusions.