In June 2005, the UAE-based private equity house Abraaj Capital purchased 40% of the company shares in a USD 5.2 million buyout deal. The rationale for such an acquisition (according to Abraaj's website) is that Maktoob has a large user base (claimed to be more than 4 million) and, according to marketing literature, "a dominant online payment option cashU and a strong brand name. It has established the first Arab online auction site souq.com which will benefit from leveraging the large community network."