Data center operator PolarDC has sold €800 million of high-yield bonds, setting what Bloomberg described as a record for the Nordic junk-bond market. The notes, due in June 2030, were priced at 600 basis points over the benchmark rate, translating into a yield of about 8.2%. Investor demand reportedly exceeded €2.9 billion, meaning the order book was more than three times the size of the deal.

The appeal is not just yield. PolarDC sits in one of the hottest infrastructure themes in Europe: data centers built for AI and high-performance computing. The Nordic region is attractive for these projects because of cooler climate conditions, access to power and the ability to use renewable energy, including hydropower.

For credit markets, the deal is a clear signal that investors are willing to finance AI infrastructure even through riskier high-yield debt. But the risk profile remains meaningful. Data center projects require heavy upfront capital, depend on energy costs and utilization rates, and remain sensitive to refinancing conditions. A yield above 8% suggests strong demand, but also shows that lenders still want a premium for exposure to leveraged digital infrastructure.