The longest portion of the offering, a 30-year security, may yield about 1.05 percentage points above Treasuries.

"The dollar market is becoming crowded, so there's an incentive to take these deals outside the U.S."

This trend underscores the broader shift across the finance industry, where the electronic trading has been making steady inroads with fixed-income securities that were once considered difficult to standardize.

The Wall Street Journal reported that OpenAI failed to meet its own goals for new user acquisition and sales, fueling concerns that the company may struggle to support its capital spending on AI infrastructure.

The issuance was the largest among 12 high-grade offerings and part of an active session in U.S. debt-capital markets today.

Credit derivatives are selling at a 36% higher volume than the previous record, set last April after Trump launched global tariffs.

Amazon's jumbo debt sale can't be seen as representative of broader credit-market demand; as geopolitical uncertainty continues to be the main factor weighing on markets.

The planned offering combining euro- and dollar-denominated bonds would test demand for high-grade debt since issuance ground to a halt earlier this week.