The sovereign wealth funds of the Persian Gulf used to be relatively easy places for US firms like Blackstone and Goldman Sachs to raise money. But recently, the power dynamics between Wall Street and Middle Eastern wealth fund managers have been shifting.

On today’s Big Take podcast, Bloomberg’s Heather Perlberg breaks down for host David Gura why Middle Eastern sovereign wealth funds are asking for more in return for access to their trillions — and what that means not only for investors but also the future of the region. 

Read more: Middle East Trillions Force New Concessions From Wall Street