Re: [問題] CFA L1 Reading 52 Problem 3 請教

看板CFAiafeFSA作者 (Keep Walking)時間15年前 (2008/11/29 17:56), 編輯推噓1(100)
留言1則, 1人參與, 最新討論串3/5 (看更多)
exchange rules that proceeds from a short sale must be kept on account with the broker. (cash $5600) short-seller also are required to post margin (cash or collateral) with the broker to cover losses should the stock price rise during the short sale. (margin 5600*45%=$2520) 所以investor沒有借現金,因此不用負擔利息 (但利息的確是你的機會成本) although large or institutional invsetors typically will receive some income from the proceeds of a short sale being held with the broker. (一般來說,account中的interest是broker賺走,但這個情況下,interest就是加項了) from Essentials of Investments, by Bodie, Kane and Marcus, 2008,7th ed. p77-78. ※ 引述《sonia888 (sonia)》之銘言: : 放空(sell short)是借券出售。 : 你借100股,並以@$56出售,共得到$5,600。 : 保證金(margin requirement)是45%,所以你須繳交$5,600×0.45=$2,520的保證金。 : 為了保證將來有足夠的錢可以買回股票來還券,除了繳交的保證金以外,你還須借總售股 : 金額($5,600)扣除保證金($2,520)後的餘額($5,600-$2,520=$3,080),也就是 : $5,600×0.55=$3,080的部分。 : 既然這$3,080的部分是借款,你當然要在回補之後,計算應繳的利息,也就是$5,600× : 0.55×0.08=$246.40。 : 所以計算投資報酬率時,須把此利息算為成本,作為減項。 : 你之所以把此減項誤作為加項,是因為你誤把放空賣掉的股票收入,視為你的錢,所以誤 : 以為有利息收入。 : ※ 引述《md13 (Keep Walking)》之銘言: : : cash is not borrowed and so interest is not charged : : profit = 5600-4500-250-300 = 550 : : from 官網 L1_Errata -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.228.27.141 ※ 編輯: md13 來自: 61.228.27.141 (11/29 18:07)

11/29 18:13, , 1F
感謝強者... 引用這麼多資訊^^
11/29 18:13, 1F
文章代碼(AID): #19CH7TR_ (CFAiafeFSA)
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文章代碼(AID): #19CH7TR_ (CFAiafeFSA)