| SIC Codes: | 7381 |
| NAICS Codes: | 561611 |
Companies in this industry provide investigation and detective services. Major firms include US-based Altegrity, The Diamond Group, FTI Consulting, Guardsmark, and Sterling Infosystems. Many large companies operate internationally.
Demand is driven by the needs of businesses, nonprofit institutions, and government agencies for outside advice on risk assessment and mitigation. The profitability of individual firms depends on the efficiency of their operations and their ability to maintain a steady flow of business. Large firms have advantages in being able to offer broad ranges of services and to take on more complex projects. Small firms can compete effectively by specializing. The industry is concentrated: the top 50 firms account for about 55 percent of industry revenue.
Major services include legal investigation services (nearly 30 percent of revenue), corporate investigation services (20 percent), and insurance investigation services (18 percent).