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  13.    Which of the following statements are true with respect to basis risk?
  I.     Basis risk arises in cross-hedging strategies but there is no basis risk when the underlying asset and hedge asset are identical.
  II.    Short hedge position benefits from unexpected strengthening of basis.
  III.    Long hedge position benefits from unexpected strengthening of basis.
  A.    I and II
  B.    I and III
  C.    II only
  D.    III only
  答疑:主要的疑點在于II與III,首先需要知道short hedge position 是指賣出期貨合約來對沖,當期貨價格相對下降時獲利;long hedge position 是指買入期貨合約來對沖,當期貨價格相對上升時獲利。basis是指:現(xiàn)貨-期貨。
  接下來是對“strengthening of basis”的理解:有幾個理解角度,相對現(xiàn)貨來說,期貨價格下降的程度更大;或者說,相對于現(xiàn)貨來說,期貨價格漲幅低于現(xiàn)貨價格。不論從哪一個角度出發(fā), 都是short hedge(賣空期貨)時,從中受益。