The Saudi Public Investment Fund, or PIF, has topped $925 billion, and has been on an investing spree as part of Crown Prince Mohammed bin Salman's "Vision 2030" initiative. The PIF has investments in companies including Uber, while also spending heavily on the LIV golf league and professional soccer.

UAE's Mubadala has $302 billion under management, and the Abu Dhabi Investment Authority has $1 trillion under management. Qatar Investment Authority has $475 billion, while Kuwait's fund has topped $800 billion.