United States: GenCorp is involved in the design, development and production of land- and sea-based nuclear ballistic missile systems for the United States. It is currently producing propulsion systems for Minuteman III and D5 Trident nuclear missiles.

Company Profile

Company profile

GenCorp, based in the United States, is engaged in aerospace and military (through subsidiary Aerojet) and real estate (Easton).1

In the financial year ending 30 November 2013, GenCorp generated revenues of US$ 1.4 billion (€ 1.0 billion), resulting in an operating profit of US$ 22 million (€ 16 million) and a net profit of US$ 168 million (€ 123 million). The aerospace and military activities organized under Aerojet accounted for 99% of the revenues.2

Contact Information

Website: Twitter: Facebook: @AerojetRdyne

Nuclear Weapons

Nuclear weapons

Aerojet, GenCorp’s aerospace and military company, has been involved in design, development and production of land-based and sea-based nuclear ballistic missile systems for 50 years.3 It currently produces solid and liquid propulsion systems for the Minuteman III and Trident II (D5) nuclear missile systems.4 There are 450 Minuteman III currently deployed and they are expected to stay active until at least 2030.5 The submarine-launched Trident II (D5) missile is currently aboard US Ohio-class and British Vanguard-class submarines.6 The US is planning to keep the Trident II missiles deployed until 2042.7

In December 2013, Aerojet was awarded a US$ 28.9 million (€ 21.2 million) contract under the Air Force Nuclear Weapons Center Propulsion Applications Program (PAP) to develop a Medium Class Stage III motor with propulsion technologies applicable to multiple future common strategic propulsion systems. The programme aims to provide a direct replacement solution option for the Minuteman III stage III motors. Besides modernising and replacing Minuteman III, the motors are also meant to support a wide range of potential strategic propulsion systems. Work is planned to be completed by October 2016.8


The following financial institutions have made approximately 2450 million USD available to GenCorp since January 2011.

  • Affiliated Managers Group
  • Ameriprise Financial
  • AQR Capital Management
  • Bank of America
  • Bank of New York Mellon
  • BlackRock
  • BlueMountain Capital Management
  • Capstone Investment Advisors
  • Carlson Capital
  • Chesapeake Partners Management
  • Citigroup
  • City National Corporation
  • Creative Solution Services
  • D.E. Shaw & Co.
  • Deutsche Bank
  • Dimensional Fund Advisors
  • Eaton Vance
  • Ferguson Wellman Capital Management
  • Fidelity Investments
  • First Eagle Investment Management
  • Gamco Investors
  • GenCorp, Inc. Retirement Savings Plan
  • Geode Capital Management

  • Glenhill Capital Management
  • Hartford Financial Services
  • Hirzel Capital Management
  • Invesco
  • IONIC Capital Management
  • JPMorgan Chase
  • Keeley Asset Management
  • Kennedy Capital Management
  • Kingstown Capital Management
  • Lawson Kroeker Investment Management
  • Lazard
  • Legal & General
  • Legg Mason
  • Lodge Hill Capital
  • Lord, Abbett & Co
  • M&T Bank Corporation
  • MFP Investors
  • Mitsubishi UFJ Financial
  • Morgan Stanley
  • New York Life Insurance Company
  • NewSouth Capital Management
  • Northern Trust

  • NorthPointe Capital
  • Ohio Public Employees Retirement System
  • Old Mutual
  • Oppenheimer Holdings
  • OxFORD Asset Management
  • Principal Financial
  • Regions Financial
  • Royal Capital Management
  • Silverback Asset Management
  • Skytop Capital Management
  • State Street
  • Steel Partners Holdings
  • Sun Life Financial
  • Sunrise Partners
  • SunTrust Banks
  • T. Rowe Price
  • Tiger Management
  • US Bancorp
  • Vanguard
  • Water Street Capital
  • Wells Fargo
  • Winslow Asset Management


  1. Gencorp, “About Gencorp”, Website Gencorp (, viewed May 2014. 

  2. Gencorp, “Annual Report 2013”, Gencorp, February 2014. 

  3. Aerojet, “About”, Website Aerojet (, viewed May 2014. 

  4. Aerojet, “Capabilities”, Website Aerojet (, viewed May 2014. 

  5. US Air Force, “Fact sheet”, Website US Air Force (, viewed May 2014;
    Woolf, A.E., “US Strategic Nuclear Forces: Background, Developments and Issues”, Congressional Research Service, 14 January 2013 ( 

  6. Lockheed Martin, “Trident II D5 Fleet Balistic Missile (FBM)”, Website Lockheed Martin (–fbm-.html), viewed May 2014. 

  7. UK Parliament, “Selected Committee on Defence Eight Report, 2006”, Website UK Parliament (, viewed May 2014. 

  8. US Department of Defense, “Daily Contracts List”, US Department of Defense, 18 October 2013 (;
    GenCorp, “USAF Awards Aerojet Rocketdyne a Medium Class Stage III Demonstration Contract”, News Release GenCorp, 2 December 2013 ( 

Top 20 Producers

Looking for information on other nuclear weapon associated companies? Check here.

In some nuclear-armed states – in particular the United States, the United Kingdom and France – private companies are hired by governments to carry out work on maintaining and modernising nuclear arsenals.

This report looks at the top 20 companies that are providing the necessary components to develop, test, maintain and modernise nuclear weapons.The contracts these companies have with nuclear armed countries are for materials and services to keep nuclear weapons in their arsenals. The companies described are substantially involved in the nuclear weapons programmes of the United States, the United Kingdom, France, or India and are themselves based in France, India, the Netherlands, the United Kingdom and the United States. More information on other companies involved in nuclear arsenals, not listed in the top 20, can be found here.

In other nuclear-armed countries –Russia, China, Pakistan and North Korea – the maintenance and modernization of nuclear forces is carried out primarily or exclusively by government agencies.


The nuclear weapon producers identified were selected on the basis of a predetermined set of criteria.
– Information on investments is publicly available.
– The company is directly involved in the development, testing, production, maintenance or trade of nuclear weapons related technology, parts, products or services.
– The company’s involvement is related to warheads, or to delivery systems such as missiles, that are specifically developed for nuclear tasks. This includes technology that is designed for ‘dual use’ (military and civilian) but excludes technology that is not designed for, but can be used in nuclear warfare. It does not include delivery platforms such as bombers and submarines.

State owned or controlled nuclear industries are outside the scope of this research, as are companies not publicly listed. Our research uncovered a number of Universities involved in nuclear weapons programmes, but these are also outside the scope of the report.

The list of nuclear weapon producers investigated was compiled through a wide variety of sources, including financial institution exclusion lists, civil society reports, media reports, etc. Additional details on the contracts and components is on the website.
We welcome information at any time about possible nuclear weapon producing companies to investigate.