G4S is perceived as one of Constellis's biggest rivals. G4S is headquartered in London, England, and was founded in 2004. Like Constellis, G4S also operates in the Security Guard and Patrol Services industry. G4S generates 1,428% the revenue of Constellis.
Securitas is one of Constellis's top competitors. Securitas is a Public company that was founded in 1934 in Stockholm, Stockholms län. Like Constellis, Securitas also operates in the Security Guard and Patrol Services field. Compared to Constellis, Securitas has 322,000 more employees.