Abu Dhabi state investor Mubadala announced that, it has made 15 to 16 investments in technology firms as part of a partnership with SoftBank Group of Japan.

Mubadala has committed $15 billion to SoftBank's $93 billion private equity fund, the SoftBank Vision Fund, which has also raised money from Saudi Arabia's main sovereign wealth fund and other investors.

Mubadala said, it has done 15 to 16 different investments , mostly centred in Silicon Valley, adding that areas of investment included artificial intelligence and biotechnology.

Mubadala, which managed 465.5 billion dirhams ($127 billion) at the end of June, has indicated before that it could list its unit Emirates Global Aluminium (EGA), one of the world's biggest aluminium producers, next year.