2026 年 2 月 8 日 总量研究 ——2026 年 2 月 8 日利率债观察 要点 7D OMO 降息的预期在升温 1、7D OMO 降息的预期在升温 近段时间，市场中对 7D OMO 降息的预期有所升温。这主要是不少投资者"判 断"2 月 4 日 3M 买断式逆回购的边际中标利率已降至 1.4%。鉴于当前 7D OMO 利率也为 1.4%，而 3M 和 7D 的央行资金利率之间通常会有一定的期限利差， 因此一些投资者认为本次 3M 买断式逆回购利率的下行将倒逼 7D OMO 降息。 实际上，买断式逆回购和 MLF 操作采用的是固定数量、利率招标、多重价位中 标的方式，边际中标利率由市场化形成，不具有政策利率的属性。人民银行加大 流动性投放力度，买断式逆回购和 MLF 的量给得足一些，那么自然其边际中标 利率就容易低一些。所以，买断式逆回购边际中标利率的下降与 7D OMO 降息 之间并无必然的联系，或至少说是没有直接的联系。 进一步讲，买断式逆回购和 MLF 操作数量的确定在主观上是为了调控 CD 等货 币市场利率，在客观上又会影响到工具本身的边际中标利率。因此，对于大多数 投资者而言，关注可以实时获 ...

Group 1 - The report discusses the short covering strategy in the bond market, specifically how the borrowing balance of individual bonds relative to other bonds of the same maturity can lead to downward pressure on interest rates [2][3][19] - The borrowing balance of a specific bond typically follows a pattern where it starts at zero upon issuance, increases as it becomes an active bond, peaks, and then declines as it transitions to a less active status [19][20] - When the borrowing amount of an active bond is significantly lower than that of a less active bond, and if interest rates decline, short sellers of the less active bond will need to cover their positions, leading to additional buying and compression of the yield spread between the two bonds [3][19][20] Group 2 - The report analyzes the practical application of the short covering strategy on key maturities, including 10Y government bonds, 10Y policy bank bonds, and 30Y government bonds, concluding that the 10Y policy bank bond shows the best results [6][31][40] - The 10Y policy bank bond's active bond (250210) switched on May 27, with the less active bond (250205) showing a borrowing amount of approximately 140 billion, which later equalized around 700 billion, while the yield spread compressed from 4-5 basis points to 1.2 basis points [6][31][40] - The analysis indicates that the 30Y government bond's short covering strategy results are less favorable than the 10Y policy bank bond due to greater sensitivity to yield spread expectations and less significant changes in borrowing amounts [40][41]