Oracle has landed a $300 billion OpenAI deal, among the largest in cloud history. The agreement, reported by The Wall Street Journal, will see OpenAI purchase computing power from Oracle over the next several years in a bet that could reshape the cloud market. The scale of the pact underscores both the opportunities and risks tied to the AI boom.

Ellison, 81, whose net worth is largely derived from his 41% stake in Oracle, saw his fortune rise by about $100 billion to around $392.6 billion, according to Forbes. He is rapidly closing in on Tesla chief Elon Musk in the race for the title of the world's richest person. Musk's net worth last stood at $439.9 billion.