US long-term interest rates rose to the highest level of the year on Wednesday, threatening the “green shoots” of recovery, after the latest sale of 10-year government debt met with a tepid response from inflation-wary investors.
Concerns about the growth of government borrowing forced the US Treasury to give investors in an auction of $19bn in 10-year notes a yield of 3.99 per cent – 4 basis points higher than the yield available before the auction. That constituted the biggest yield markup since a 10-year auction in May 2003, said Morgan Stanley. Yields on the 10-year note, the benchmark rate for US mortgages, hit a high of 4 per cent during the day, up from 3.6 per cent a week ago.