Financing needs related to AI data center investments are likely to be large and persistent. While the overall economics of such investments remains a topic of much debate, the duration supply implications for U.S. interest rate markets have received less attention. Issuance of long-term investment grade corporate bonds, swapping of floating-rate loans from private credit investors, and possible crowding-out of financial issuers are three duration supply channels to watch. The divergence between the long end of the curve and long-term swap spreads is indicative of these flows and their impacts.