Qatar Investment & Projects Development Holding Company (QIPCO) is a privately held Qatari investment company based in Doha, established in 1999 by six brothers of the Al Thani ruling family. Founded initially as a property developer and equity investor deploying roughly QR 300 million of capital, it has since grown into a diversified holding of independently operated subsidiaries and international joint ventures spanning real estate, construction, oil and gas, trading and advanced services, and finance. Its best-known holdings include Mannai Corporation, Midmac Contracting, and Black Cat Engineering & Construction, while its QIPCO-branded sponsorship of British horse racing gives the group high-profile international visibility.