7月15日电，30年国债期货午后涨幅扩大，盘中一度升0.53%，创5月30日来最大涨幅。

Core Viewpoint - The 30-year Treasury futures saw a significant increase, with an intraday rise of 0.53%, marking the largest gain since May 30 [1] Group 1 - The 30-year Treasury futures experienced a notable midday surge, reflecting market movements [1] - The increase in Treasury futures indicates a potential shift in investor sentiment towards long-term bonds [1]