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  原文标题:《关税博弈深化,美债可否抄底?》

  来源:中信建投

  作者:周君芝、孙英杰,

  中信建投指出,本轮关税大博弈或将重构当前全球经贸规则,全球供需格局、生产供应链、金融稳定性、美元潮汐面临诸多不确定性。之前关税摩擦牵引全球资产定价,风险仅局限于需求;本轮关税大博弈牵引的资产定价,隐含另一层流动性风险。此外,美国或将启动一轮减税,债务上限提高。美债供给增加,叠加压不下的通胀,中期维度仍不可轻言抄底美债。

  核心观点

  一、美债风暴本质上是一次流动性风暴

  近期美债风暴,本质上是一次流动性风暴。

  2025年3月10年美债收益率整体在4.2%点位震荡。4月2日美国加征关税政策推出,10年国债收益率大幅下行,显然资产顺畅定价一轮衰退叙事,资产风险偏好收缩。

  然而4月7日开始10年美债收益率大幅上行,显示美债正在遭受一轮抛售。4月7日-8日,美国10年国债收益率更是大幅上行25BP。

  我们之前提示过(《美债风暴背后的关税暗流》,2025年4月9日),4月7日以来的美债利率波动,核心因素有三点,一是3年国债拍卖结果显示需求疲弱。市场担忧此后进行的10年和30年国债拍卖需求同样不佳。因此,美国长债收益率大幅上升。二是美债收益率高波动,可能引发部分杠杆交易的基金平仓。三是市场担忧日本、中国等国家抛售美债以反制美国关税。

  虽然目前缺乏直接的证据,证明此次美债流动性风暴背后有关税反制带来的美债抛售潮。

  但在关税大博弈背景下,市场对美债抛售背后折射出的美国资产流动性风险是否可控?典型指标显示,4月7日以来的美债风暴,本质上就是一轮流动性风暴。

  由于回购市场为对冲基金进行基差交易的重要融资渠道,因此,观察回购市场流动性紧张可以侧面验证美债风暴背后的流动性问题。4月2日美国加征关税以来,SOFR-EFFR利差仅在4月3日短暂上升6BP,次日回落。然而,3年国债拍卖数据出炉以来,4月8日SOFR-EFFR利差为正并且走阔至7BP,9日进一步走阔至9BP,显示回购市场流动性短缺。

  类似股指VIX的债券波动率指标MOVE同样在8日之后飙升,4月2日仅为106点,8日已经升至139点。MOVE指数飙升同样显示美债市场流动性紧张,市场情绪恐慌。

  随着美东时间4月9日特朗普开设90天关税豁免期,且美联储官员表态如有需求将采取工具稳定市场。日本财务大臣也表态,日本抛售并非处于关税反制措施。近期美债风暴趋于收敛。

  美联储票委波士顿联储主席SusanCollins表示,当前市场目前仍运作良好,如果美国金融市场出现混乱,美联储“绝对已做好准备”动用其政策工具,以稳定市场。

  4月10日,SOFR-EFFR利差已经回落至4BP,11日进一步回落至0BP。MOVE指数有所回落,14日已经下行至132。这表明本轮流动性冲击告一段落。

  二、关税大博弈隐含全球资产的另一层风险

  本轮关税博弈可能指向一轮全方位的全球规则重塑。

  4月2日特朗普宣告征加第二轮关税以来,全球资本市场大动。不仅因为本轮关税幅度大、范围广,更为重要的原因是如此征收关税,将意味着二战以来全球贸易规则将面临重构。

  其一,如若贸易规则重构,紧随而来的便是全球供应链重塑。以实体供需为基础的产业、金融、政治,也将呈现涟漪效应,逐一面临改变。

  其二,高额的对等关税还将引发国家之间的贸易反制,包含并不限于关税反制、出口禁运、实体限制名单等常规操作。这也加大了全球金融资金流动的不确定性,毕竟资金流动性需要稳定的全球投资环境。

  其三,过去五年持续高涨的美国资产(尤以美股为例)和超越历史经验的财政扩张,美国风险资产处于高位。本轮大规模关税加大美国或衰退或滞涨担忧,关税反复进一步加深全球对美国政策的信任度,这样的背景下美国资产对全球美元的吸引力有所降温。全球美元潮汐开始出现波动。

  这也是为何本轮关税大博弈,既不同于上世纪70-80年代的日美贸易摩擦,也不同于2018~2019年中美贸易战。前两者都是美国和特定国家的关税博弈,也不曾涉及全球经贸规则重构,自然也就没有掀起全球资金流向的风波。

  正因为此次关税范围之广,力度之大,中美博弈之切,是战后少见。随着关税博弈进入深水区,全球经贸关系重构的大背景下,全球金融资产的波动率都会抬升。我们依然对本轮关税大博弈带来的金融资产波动,保持高度关注。

  三、关税大博弈视角看美债,可否抄底?

  除却关税带来的金融不确定性,导致流动性波动之外,未来美债利率走势仍需考虑两大主线逻辑:未来美国通胀走向,美国债务问题何去何从?

  其一,油价下行能够对冲一部分通胀,但关税仍是美国未来通胀的主要决定因素。

  本轮美国关税政策存在巨大不确定性,我们采用简化算法予以估计原油和通胀的综合效应。

  我们按照此前PIIE测算结果——对中国加征60%关税,对全球加征10%关税,那么美国通胀2025年将上升1PCT左右。如果全球其他国家和中国予以反制,那么美国通胀2025年将上升2PCT左右。

  考虑到原油价格下行可以抵消贸易摩擦带来的下游通胀上升,原油价格下行10%将直接带动美国CPI能源分项下降1.5PCT,使得CPI整体下行0.1PCT。虽然原油价格对美国CPI还存在间接影响效应,实际CPI下行幅度会比上述测算弹性更大。

  按照我们的测算,如果本轮关税最终加征力度偏大、实施节奏偏快(如4月2日宣布的高额对等关税落地),除非原油价格进入到一轮历史级别低位,譬如2008年,否则美国大概率将经历一轮通胀上行。

  其二,美国国内减税政策及债务融资不确定性,或冲击未来的美国国债市场。

  美国4月10日众议院通过一项财政预算计划,共和党可以通过“预算协调”机制以简单多数原则通过后续税改法案。

  根据本次预算计划,未来十年美国税改法案可能减少税收高达5.3万亿美元,同时债务上限提高5万亿美元。

  此前的参议院和众议院对于财政支出削减存在明显分歧,参议院版本的预算框架提出削减支出约40亿美元,而众议院版本寻求至少削减支出2万亿美元。

  如果美国债务上限提高,财政支出削减幅度不足,美国债务发行可能增加债务压力,供给增加及期限溢价增加均可能抬升国债收益率。

  需要密切关注9月之前的美国财政法案,3月通过临时拨款法案将政府运转最后时间定位9月30日。

本文作者:周君芝、孙英杰,来源:中信建投,原文标题:《关税博弈深化,美债可否抄底?》

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