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💗 · 2025年06月11日

B

NO.PZ2023090801000014

问题如下:

Which of the following statements about credit tranching is incorrect?

选项:

A.

The waterfall structure redistributes the credit risk associated with the underlying collateral.

B.

Some of the bond classes may have a better credit rating than the company that is seeking to raise funds.

C.

Risk ratings are based on the market risk of the pool of securitized loans or receivables as well as the priority of how they absorb losses.

解释:

Risk ratings are based on the credit risk (not market risk) of the pool of securitized loans or receivables as well as the priority of how they absorb losses.

A is incorrect because it is a correct statement. The waterfall structure redistributes the credit risk associated with the collateral. The creation of a set of bond classes allows investors to choose the level of risk that they prefer to bear and receive return accordingly. B is incorrect because it is a correct statement. Each bond class in the transaction receives a risk rating that reflects its credit risk, and some of the bond classes may exhibit a better credit rating than the company that is seeking to raise funds because of collateralization or credit enhancement.

每一层级的评级怎么会比公司高呢

1 个答案

笛子_品职助教 · 2025年06月12日

嗨,爱思考的PZer你好:


现实中确实会发生某些ABS的信用评级高于其发行人评级的情况。以下是背后的逻辑和原因:

1、结构化信用增级 (Credit Enhancement): 在资产证券化过程中,发行人通常通过多种方式提高某些债券的信用质量。比如,可以通过设置次级层级 (subordinate tranche) 来承担更多的违约损失,优先层级 (senior tranche) 便可以享受更高的信用评级。次级层级的损失吸收能力是一种信用增级手段,使得优先层级的违约风险大大降低。

2、过度抵押(Overcollateralization):资产支持证券往往会用比发行债务规模更大的资产池来支撑,这样即使一些资产违约,剩余的资产仍然足以支付优先层级债券持有人的本金和利息。

3、信用保险或担保 (Credit Insurance or Guarantees): 某些情况下,ABS发行人可能会获得来自第三方的担保或保险,进一步降低优先层级债券的风险,这使得其信用评级高于发行公司。

4、独立性: ABS的结构使得其所依赖的资产池与发行公司的运营有一定程度的隔离。因此,即使发行人出现财务困难,只要资产池的现金流能够持续支付,优先层级债券仍然可能维持高评级。


在许多资产支持证券的交易中,发行公司本身的信用评级可能较低,但通过上述结构化增级手段,部分有限层级的债券,其信用评级可以达到投资级,甚至 AAA 级,远高于发行公司本身的信用评级。这是因为债券持有人并不是直接依赖发行公司偿还,而是依赖资产池的现金流和信用增级机制。因此,题目中的B选项是正确的。

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虽然现在很辛苦,但努力过的感觉真的很好,加油!