债市机构行为周报（7月第3周）：债市横盘三个月后的微观变化-20250720

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - The bond market has been in a sideways trend for three months. After the equal - tariff disturbance in early April, the yield of the 10 - year Treasury bond dropped to 1.65% and has since fluctuated between 1.65% and 1.70% [2][10]. - There are four changes in institutional behavior during the sideways period of the bond market, including changes in the behavior of large banks, the actions of funds and other asset management products, the allocation preferences of insurance institutions, and the change in the lending volume of 10 - year Treasury bonds [2][3][10]. 3. Summary According to the Directory 3.1 This Week's Institutional Behavior Review - Four Changes in Institutional Behavior during the Sideways Period of the Bond Market - Large banks not only increase their purchases of short - term Treasury bonds but also their demand for certificates of deposit. Their weekly demand for certificates of deposit has rebounded to over 100 billion yuan since late May, indicating improved liability - side pressure. After the mid - month tax period disturbance, the liquidity may further loosen [2][10]. - Funds extend the duration of their bond holdings, and asset management products such as trusts increase their purchases. The median duration of interest - rate bond funds has risen to 3.92 years, about 1 year higher than at the beginning of the sideways period, suggesting that non - bank institutions are holding bonds in anticipation of price increases [3][10]. - Insurance institutions have almost stopped buying Treasury bonds in the secondary market and mainly allocate local government bonds, especially 30 - year and 20 - year ones [3][11]. - The lending volume of 10 - year Treasury bonds has significantly declined, while the lending volume of 10 - year China Development Bank bonds has remained flat. The decrease in Treasury bond borrowing by securities firms may be due to limited space for reverse arbitrage strategies in the futures market [3][11]. - Yield Curve: The yields of Treasury bonds and China Development Bank bonds have generally declined. For Treasury bonds, the 1Y yield dropped 2bp, the 3Y about 2bp, etc. For China Development Bank bonds, the 1Y yield dropped about 1bp, the 5Y about 2bp, etc [12]. - Term Spread: The spread between Treasury bonds and China Development Bank bonds has increased. For Treasury bonds, the term spread has generally widened; for China Development Bank bonds, the medium - and long - term spreads have widened [15][16]. 3.2 Bond Market Leverage and Liquidity - Leverage Ratio: It has dropped to 107.09%. From July 14 to July 18, 2025, the leverage ratio first increased and then decreased during the week [19]. - Pledged Repurchase: The average daily trading volume of pledged repurchase this week was 7.2 trillion yuan, with an average daily overnight trading volume accounting for 88.54%. The average daily trading volume decreased by 0.97 trillion yuan compared with last week [25]. - Liquidity: Banks' net lending has fluctuated upwards. As of July 18, the net lending of large banks and policy banks was 4.18 trillion yuan; the average daily net lending of joint - stock banks and city and rural commercial banks was 0.77 trillion yuan, and they had a net borrowing of 0.75 trillion yuan on July 18 [29]. 3.3 Duration of Medium - and Long - Term Bond Funds - Median Duration: The median duration of medium - and long - term bond funds remained at 2.87 years (de - leveraged) and 3.22 years (leveraged). On July 18, the de - leveraged median duration was the same as last Friday, while the leveraged median duration increased by 0.01 year [42]. - Duration of Interest - Rate Bond Funds: The median duration of interest - rate bond funds (leveraged) remained at 3.92 years, and the median duration of credit - bond funds (leveraged) rose to 2.99 years, an increase of 0.01 year compared with last Friday [46]. 3.4 Comparison of Category Strategies - Sino - US Yield Spread: It has generally narrowed. The 1Y spread narrowed by 5bp, the 2Y by 7bp, etc [52]. - Implied Tax Rate: The short - term implied tax rate has widened, while the medium - and long - term rates have shown differentiation [53]. 3.5 Changes in Bond Lending Balance On July 18, the lending concentration of the active bonds of 10 - year Treasury bonds, 10 - year China Development Bank bonds, and 30 - year Treasury bonds showed an upward trend, while that of the second - active bonds of 10 - year Treasury bonds and 10 - year China Development Bank bonds showed a downward trend. Except for securities firms, the lending concentration of all other institutions increased [54].