The 10-year Treasury yield surged more than ten basis points to 5.223% on September 24 2026, its highest since June 2007, after closing at 5.135% on September 23 and 4.959% on September 22 - roughly 23 basis points in three sessions. CNBC attributed the move to inflation well above the 2% goal, another rise in energy prices, and the debt issuance of a global hyperscaler financing arms race; the week's 5-year auction drew unexpectedly weak demand. By the morning of September 25 the 10-year was near 5.19%.