The yield curve has flattened. And the reason it's flattened, even though we're expecting more inflation, is that bond traders are beginning to price in the idea of a real economic slowdown. So that's why the long end has been coming down. The market is realizing that the Fed's inability to cut short-term rates (due to sticky 3.1% core inflation) will ultimately choke off economic growth. When growth slows significantly, investors flee to the safety of long-duration US Treasuries, driving their prices up and yields down. LONG long-duration US Treasuries as a safe-haven play against a hard landing and a slowing macro economy. If inflation accelerates further, the Fed may be forced to hike rates aggressively, which could cause a sell-off across the entire yield curve, including the long end.