美债：近两周短降长升，5月财政盈余由正转负

Group 1 - Recent trends in US Treasury yields show a decline in short-term rates and a slight increase in long-term rates, indicating a dual market dynamic of outlook and supply-demand mismatch [1] - As of June 20, the 10-year Treasury yield was 4.38%, down 2 basis points from two weeks prior, while the 2-year yield also fell by 2 basis points and the 30-year yield rose by 1 basis point [1] - The US fiscal surplus turned negative in May, resulting in a deficit of $316 billion, with a 12-month cumulative deficit of $2 trillion, highlighting ongoing fiscal pressures [1] Group 2 - The Federal Reserve maintained interest rates at 4.25%-4.50% on June 19, with increasing internal divisions potentially leading to communication risks regarding future policy [1] - The Treasury General Account (TGA) balance increased by $7.7 billion over two weeks, while the Fed's reverse repo tool expanded by $33.3 billion, tightening short-term dollar liquidity [1] - Market conditions are facing risks from rapid oil price increases and tightening liquidity [1]