After the stake sale, Cintra INR Investments BV's shareholding in IRB Infra Developers has declined to 19.86 per cent from 24.86 per cent. Details of the buyers of IRB Infra Developers' shares could not be ascertained. Shares of IRB Infrastructure Developers plunged 5.30 per cent to close at Rs 66.44 apiece on the NSE. In December 2021, Cintra, Ferrovial's toll road subsidiary, completed the acquisition of a 24.86 per cent stake in IRB Infrastructure Developers for 369 million euro. IRB Infrastructure Developers is a leading toll road developer and operator in the Indian market, having developed the country's first Build-Operate-Transfer (BOT) concession.