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Sei Investments Co. Increases Stake in Huntington Ingalls Industries

July 23, 2026 · by DPW Pipeline

Sei Investments Co. Increases Stake in Huntington Ingalls Industries

Financial firm Sei Investments Co. has adjusted its portfolio by raising its ownership position in Huntington Ingalls Industries, Inc., according to a recent regulatory filing. The change highlights ongoing institutional activity within the aerospace and defense sector.

Huntington Ingalls Industries operates as a major supplier of military vessels to the United States. The company’s business is divided into three primary segments: Ingalls, Newport News, and Mission Technologies. Its operations encompass the design, construction, overhaul, and repair of ships, including non-nuclear surface combatants. Additionally, the company provides various technical solutions through its Mission Technologies division.

As a publicly traded entity in the industrials sector, Huntington Ingalls maintains a significant market presence. The company’s market capitalization stands at approximately $10.87 billion. In recent trading activity, shares were priced at $277.28, reflecting a slight decline of 0.62% from the previous close of $279.00.

Institutional investors like Sei Investments Co. regularly adjust their holdings in defense primes based on portfolio strategies. Huntington Ingalls remains a key player in the national security supply chain, primarily serving as the sole builder of U.S. Navy aircraft carriers and one of two builders of submarines.

What to watch

  • Future 13-F filings detailing exact share counts and valuation changes.
  • Upcoming contract awards or modifications related to Navy shipbuilding programs.
  • The company’s next quarterly earnings release for revenue and margin updates.

Source: original release