Mumbai, July 28 -- The private businesses of Tata Sons envisioned to take the conglomerate to its next stage of growth sank deeper into losses in FY26, led by aviation, digital commerce, electronics assembling and battery manufacturing. Overall, losses at Tata Sons' 16 privately held businesses nearly doubled in FY26, rising to Rs.27,854 crore from Rs.15,311 crore in FY25, the Tata Sons annual report published on Monday showed. In the annual report, Tata Sons chairman Chandrasekaran compared the ongoing large investments to Tatas' earlier endeavours like the Indian Institute of Science, steelmaking, software services, and fundamental research. "Each of these bets looked audacious, even imprudent, at the time they were made. Each took decade...