Sistema is a diversified group organized around 4 sectors of activity:
- telecommunications (71.9% of sales): fixed and mobile telephone, data transmission, Internet access, TV program broadcasting, etc.;
- retail (9%): distribution of children's clothing and consumer goods;
- high technology (3.7%): manufacturing of radio-technical equipment, integrated circuits, electronic devices, computer system integration, and software. The group is also involved in pharmaceutical product distribution;
- other (15.4%): financial services, real estate development, oil production and distribution, production of pulp and paper, distribution of pharmaceutical products, tour organization, petrochemistry, etc.