Nvidia is turning to some of the world's biggest financial groups to help fund the next phase of the artificial intelligence boom. Six Wall Street giants have joined the effort, which could raise more than $500 billion for Al infrastructure. The firms: Apollo Global Management, Blackstone, BlackRock, Brookfield Asset Management, Goldman Sachs and KKR havesigned memorandums of understanding with Nvidia to develop financing platforms for companies buying its hardware and building data centres, Nvidia said on Monday.