對(duì)于CFA考試是有很多的人備考的,在備考中是需要一點(diǎn)一點(diǎn)知識(shí)的積累,如果你不能很好的掌握知識(shí)點(diǎn),就可能錯(cuò)失一道題的機(jī)會(huì)!那你對(duì)備兌看跌期權(quán)掌握的如何呢?

備兌看跌期權(quán):是一種防止未實(shí)現(xiàn)收益賬戶的中產(chǎn)生損失的風(fēng)險(xiǎn)規(guī)避策略,保護(hù)性看跌期權(quán)是同時(shí)擁有股票和這個(gè)股票相對(duì)應(yīng)的看跌期權(quán)組成的,當(dāng)投資者擁有正在上漲階段的股票時(shí),仍要規(guī)避股票可能下跌這種不確定性帶來的風(fēng)險(xiǎn)時(shí),一般會(huì)選擇備兌看跌期權(quán)。


例:An investor has purchased a share of stock for 190.A call option on this stock,expiring in seven months and with an exercise price of 200, is pricedat11.40. If the investor enters into a covered call now,the profiton this strategy if the stock price at expiration is 215 is closest to:

A. –3.60

B.21.40.

C.28.60.

解析:B is correct,The profit on a covered call is calculated as follows:π=ST–S0–max(0,ST–X)+C0D=215 – 190–max(0,215 – 200)+11.40 = $21.40.

備抵買入是持有股票且賣出看漲期權(quán),因?yàn)榭礉q期權(quán)的行權(quán)價(jià)是200,所以只要股票價(jià)格高于200的部分投資者都拿不到,到期日的價(jià)格為215高于執(zhí)行價(jià)格,所以投資者會(huì)以行權(quán)價(jià)200出售,在股票的頭寸上獲利200-190=10,在空頭看漲期權(quán)上的獲利為期權(quán)價(jià)格11.4,所以投資者的總獲利為11.4+10=21.4