Tata Sons Pvt. Ltd. is the parent company of the Tata Group and holds the bulk of shareholding in the Tata group of companies including their land holdings across India, tea estates and steel plants and derives its revenue from dividends from these companies and brand loyalty fees. It is a privately owned conglomerate of nearly 100 companies encompassing several primary business sectors, including: chemicals, consumer products, energy, engineering, information systems, materials, and services. Its headquarters are in Mumbai.