老师好,我想请问一下Industry specific premium 到底是应该在Expanded CAPM模型中,还是应该在Build-up Approach的模型中?在Corporate issuer的框架图中,industry specific premium是在expanded CAPM公式中的,build-up approach的公式没有Industry specific premium(请见下图一),在Equity的框架图中(请见下图二),Expanded CAPM公式里没有industry specific premium 然而在Build-up Approach中Industry specific premium出现了。
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