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臧小玉 · 2022年04月07日

关于TTC

NO.PZ2019052001000141

问题如下:

Which of the following statements regarding the choice of default probability approaches in computing economic capital is correct?

选项:

A.

A through-the-cycle (TTC) approach should be used to price financial instruments with credit risk exposure.

B.

A point-in-time (PIT) approach is more commonly used for computations involving profitability and strategic decisions.

C.

A TTC approach is more likely to result in a lower volatility of capital compared to the PIT approach.

D.

A firm’s rating will not change when analyzed under the PIT approach versus the TTC approach.

解释:

A firms rating is more likely to change when analyzed under the point-in-time (PIT) approach compared to the through-the-cycle (TTC) approach. As a result, the TTC approach results in a lower volatility of economic capital compared to the PIT approach.

A PIT approach should be used to price financial instruments with credit risk exposure and to compute short-term expected losses. A TTC approach is more commonly used for computations involving profitability, strategic decisions, and economic capital.

TTC用了更长时间的数据,应该包括更多损失,数值更大,为什么波动率更小?

1 个答案

品职答疑小助手雍 · 2022年04月07日

同学你好,不是这么考虑的,你要算的是同质化的var,也就是期限和confidence level相同的。不会拿一个长期一个短期的var进行比较,没有意义。

所以TTC和PIT即使求出了不同期限的var,也会同质化的处理一下,才可以比较。

TTC平滑了整个周期的情况,所以会更小一些。这个是课上讲的原话,可以听一下RAROC Assumptions & Adjusted RAROC 1.5倍速8分钟左右。