Factory Mutual Insurance Trims Amgen Stake

Institutional investor reduces position in biotech giant by 3.9%

Apr. 11, 2026 at 8:40am

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A highly detailed, macro-level view of metallic gears, levers, and other industrial components, conceptually representing the complex financial infrastructure underlying Amgen's stock.An extreme close-up of the intricate inner workings of the financial system reflects the complex, institutional nature of Amgen's ownership structure.Thousand Oaks Today

Factory Mutual Insurance Co. has reduced its stake in Amgen Inc. (NASDAQ:AMGN) by 3.9% in the fourth quarter, according to a recent SEC filing. The firm now owns 62,300 shares of the medical research company's stock, valued at $20.4 million.

Why it matters

Amgen is one of the world's largest biotechnology companies, with a diverse portfolio of innovative medicines. Changes in institutional ownership can signal shifts in market sentiment or portfolio strategy, providing insights into the stock's performance and outlook.

The details

Factory Mutual Insurance Co. sold 2,500 shares of Amgen stock during the fourth quarter, reducing its total position to 62,300 shares. The firm's holdings in Amgen were worth $20.4 million as of the most recent filing. Several other hedge funds and institutional investors have also adjusted their Amgen positions in recent quarters.

  • Factory Mutual Insurance Co. filed its SEC report in the 4th quarter of 2026.
  • The firm sold 2,500 Amgen shares during the 4th quarter of 2026.

The players

Factory Mutual Insurance Co.

A major institutional investor and insurance company that manages a diversified portfolio of investments.

Amgen Inc.

A global biotechnology company that discovers, develops, manufactures and delivers human therapeutics to treat serious illnesses.

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The takeaway

This change in institutional ownership of Amgen stock provides a data point on the evolving sentiment around the biotech company, which continues to be a closely watched name in the healthcare sector.