Deutsche Bank reported that global long-term government bond yields rose sharply in August, with the US 30-year government bond yield reaching 5.31% on August 17, its highest since 2007. The German 30-year government bond yield climbed to 3.81% on August 31, its highest since 2011, and the Japanese 30-year government bond yield touched 4.14% on August 18, an all-time high since its first issuance in 1999. The US Treasury unexpectedly announced on August 19 that it would at least double the size of its long-term bond buybacks.