The largest shareholder of Tata Sons, which controls entire Tata Group, is Sir Dorabji Tata Trust, which owns 27.98% shares. Sir Ratan Tata Trust, named after late industrialist Ratan Tata's grandfather, owns 23.56%, while Sterling Investment Corporation and Cyrus Investments own 9.19% each. JRD Tata Trust owns 4.01% while Tata Education Trust and Tata Social Welfare Trust own 3.73% each.