GD vs AJG Comparison

General Dynamics is a defense contractor and business jet manufacturer. The firm's segments include aerospace, marine, combat systems, and technology. General Dynamics' aerospace segment manufactures Gulfstream business jets and operates a global aircraft servicing operation. Combat systems produces land-based combat vehicles such as the M1 Abrams tank and Stryker armored personnel carrier, as well as munitions. The marine segment builds and services nuclear-powered submarines, destroyers, and other ships. The technologies segment contains two main units: an IT business that primarily serves the government market and a mission systems business that focuses on products that provide command, control, computing, intelligence, surveillance, and reconnaissance capabilities to the military.

Arthur J. Gallagher & Co provides insurance brokerage and consulting services to middle-market entities around the world. The majority of the company's revenue comes from its brokerage segment, where it negotiates and places its customers with insurance companies that provide, among other types, property/casualty and health insurance. The company's primary source of revenue in the brokerage segment is commissioning from the insurance companies. The company also generates significant revenue in its corporate segment, which includes clean energy investment and other investment income. The company generates most of its revenue in the United States, with the remaining revenue coming primarily from Australia, Bermuda, Canada, the Caribbean, New Zealand, and the United Kingdom.