[BlackRock: The rise in yield weakens the stabilizing role of long-term US treasury bond bonds in the portfolio] Gold Finance reported that bond yields in developed markets rose, confirming BlackRock's view that the role of portfolio ballast provided by traditional diversified investment instruments such as long-term US treasury bond bonds is weakened. BlackRock stated in a report that the surge in long-term bond yields partially reflects growing concerns about loose fiscal policies and deteriorating fiscal prospects. The company stated that the yield on Japanese 30-year bonds reached a historic high earlier this month and has risen by over 100 basis points this year. The recent surge was triggered by a fiscal spending plan by the Japanese government and the Bank of Japan's hint of a possible interest rate hike this week. The central banks of Australia and Canada have also changed their tone on interest rates, either suggesting an end to the rate cut or suggesting a possible rate hike.