All else equal, an investor expects future inflation to increase, but the uncertainty of future inflation to fall. For such an investor the break-even inflation rate:
is uncertain.
is expected to fall.
is expected to rise.
(Institute 457)
Institute, CFA. 2018 CFA Program Level II Volume 6 Alternative Investments and Portfolio Management. CFA Institute, 07/2017. VitalBook file.
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以上是一道书后题,以及教材关于θ和π,通过定义,我理解π是不确定性风险溢价,即只要有不确定性就是一个正的风险溢价,答案显然认为对通货膨胀下降的不确定性与通货膨胀预期上升互相冲减,是个反向关系,假设投资人预期通货膨胀上升,又对通胀上升不确定,风险溢价就用θ+π,假设对通胀下降不确定就是θ-π吗?我觉得和教材原文似乎不符,按原文只要有不确定性(无论这个不确定性是上升还是下降)就应该是θ+π,烦请讲解一下,谢谢!