FOR the umpteenth time in the past decade, a great turning-point has been declared in the government-bond market. Bond yields have risen across the world, including in China, where the yield on the ten-year bond has come close to 4% for the first time since 2014. The ten-year Treasury-bond yield, the most important benchmark, has risen from 2.05% in early September to 2.37%, though that is still below its level of early March (see chart).

Investors have been expecting bond yields to rise for a while. A survey by JPMorgan Chase found that a record 70% of its clients with speculative accounts had “short” positions in Treasury bonds—ie, betting that...Continue reading