Abu Dhabi’s Mubadala Investment Co. is exploring the possibility of acquiring a stake in Heathrow airport, potentially joining prominent shareholders such as Saudi Arabia’s Public Investment Fund and Qatar Investment Authority. Mubadala is contemplating the investment following an approach by Paris-based buyout firm Ardian. Discussions are ongoing, and no definitive agreements have been reached yet. Mubadala has yet to make a final decision on whether to proceed with the investment.

If the acquisition materializes, it would mark another instance of deep-pocketed Middle Eastern wealth funds diversifying their portfolios by investing in global infrastructure assets. Ferrovial SE's recent decision to sell a 25% stake in Heathrow to Saudi's PIF and Ardian for £2.37 billion triggered interest from additional shareholders exercising their tag-along rights, thus expanding the potential pool of investors.