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安氏大俗商业学:一道投资公司招聘资金管理人的面试题目 |
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安氏大俗商业学:一道投资公司招聘资金管理人的面试题目 -- 安普若 - (701 Byte) 2005-8-15 周一, 09:50 (11260 reads) |
MIA
头衔: 海归上尉
加入时间: 2005/09/13 文章: 48
海归分: 8004
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作者:MIA 在 海归商务 发贴, 来自【海归网】 http://www.haiguinet.com
If there is no transaction cost, we invest 10 at a time for 100 times, we get 10*0.6*2*100 = 1200. Since transaction cost is 2 each, total trans cost is 200. Our profit is 0. Thus we need to minimize no. of transactions. Obviously, invest all 1000 at one time. We get 1000*1.2-2=1198. So if you can only invest 1000, invest all for one time.
However, if we can invest 100 times, mathmatically (or statistically), our expected return is 1.2 for each investment. Thus total profit for investing 100 times is 1000*1.2^100-100*2 = 82.8billion.
I can not believe it either. Do you?
作者:MIA 在 海归商务 发贴, 来自【海归网】 http://www.haiguinet.com
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安氏大俗商业学:一道投资公司招聘资金管理人的面试题目 -- 安普若 - (701 Byte) 2005-8-15 周一, 09:50 (11260 reads) - 搞不懂 -- pchf005 - (3 Byte) 2008-7-15 周二, 14:02 (234 reads)
- You can earn maximum of $82.8 billion - my dumb calculation -- MIA - (582 Byte) 2005-10-05 周三, 05:59 (525 reads)
- 标准答案来了 -- ikonos - (332 Byte) 2005-8-16 周二, 16:02 (1346 reads)
- 标准答案 -- feebe - (253 Byte) 2005-8-15 周一, 21:02 (1311 reads)
- 瞧瞧这广告做的, -- 小报记者 - (24 Byte) 2005-8-15 周一, 21:56 (567 reads)
- 不一样 -- feebe - (0 Byte) 2005-8-16 周二, 00:32 (399 reads)
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