Masri founded and manages the first Palestinian equity fund, a 90 million investment initiative known as "Siraj Fund" in 2003, and the companys first fun "Siraj Palestine Fund I" was launched in February 2011, the company was founded for the sole purpose of managing investment funds in Palestine. The company focuses on promising startups and capital investments in small and medium-sized enterprises in the sectors of  information and communication technology services, energy, agriculture, clean technology, healthcare, logistics, education, manufacturing, transportation, construction and financial services. Sirajs investments in these companies range between $250,000 and $12 million, and plans on expanding in the MENA region in the future.