Accordingly, Pallonji Shapoorji Mistry is an Indian billionaire construction tycoon and chairman of Shapoorji Pallonji Group who is an Irish citizen since 2003. Meanwhile, according to Forbes, his wealth is estimated to be US$20.1 billion as of January 2019. With his 18.3% stake in Tata Sons, he is the largest individual shareholder in India's largest private conglomerate, Tata Group, the primary shareholder of which is the Tata philanthropic Allied Trusts, with 66% controlling interest.
Reportedly his father first bought shares in Tata Sons in the 1930s, a stake that currently stands at 18.4%, making Mistry the largest individual shareholder in Tata Sons, which is primarily controlled by the charitable Tata Trusts.
Apparently, Pallonji Mistry is the chairman of the Shapoorji Pallonji Group through which he owns Shapoorji Pallonji Construction Limited, Forbes Textiles and Eureka Forbes Limited. Previously in 2003, Pallonji gave up his Indian citizenship to become an Irish citizen "on the basis of his marriage to an Irish-born national", Pat "Patsy" Perin Dubash, who was born in September 1939 at Hatch Street Nursing House in Dublin.
He remains in residence in Mumbai. The family's interest in Ireland is ascribed, in part, to their love of horses; Mistry owns a 200 acres (0.81 km2) stud farm and a 10,000-square-foot (930 m2) home in Pune, India. Reportedly he has two sons and two daughters, one of whom, Aloo, is married to Noel Tata, the half-brother of Ratan Tata.