Oracle's AI backlog explodes to $638B, up 363% year-over-year, but investors aren't celebrating

Oracle just posted a backlog number so large it reads like a typo. The company’s remaining performance obligations, essentially contracted future revenue, hit $638 billion at the end of its fiscal Q4 2026. That’s up from roughly $138 billion a year ago.

For context, $638 billion is more than the GDP of most countries. It’s also a 363% year-over-year increase, driven almost entirely by AI cloud infrastructure deals. And yet, Oracle’s stock fell 7-10% in after-hours trading.

The numbers behind the AI gold rush

Oracle reported Q4 FY2026 revenue of $19.2 billion, a 21% bump from the same period last year. Oracle Cloud Infrastructure, the company’s bet on becoming an AI computing backbone, grew at a blistering 93%.

The RPO figure grew by $85 billion just from the prior quarter, when it stood at $553 billion.