15.若期貨選擇權三個月後到期,標的期貨契約四個月後到期,目前期貨價格與選擇權履約價同為6.5元,無風險利率為10%,標的資產波動度為20%,若出售1,000單位之歐式期貨買權,其delta約為多少?
N(0.0525) = 0.5210 N(0.0462) = 0.5184 ,=1.025, =0.975 (A)507(B)519(C)-507(D)-519