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小木头 · 2020年01月18日

问一道题:NO.PZ2019012201000075

问题如下:

Chen and Garcia next discuss characteristics of long–short and long-only investing. Garcia makes the following statements about investing with long–short and long-only managers:
Statement 1 A long–short portfolio allows for a gross exposure of 100%.
Statement 2 A long-only portfolio generally allows for greater investment capacity than other approaches, particularly when using strategies that focus on large-cap stocks.
Which of Garcia’s statements regarding investing with long–short and longonly managers is correct?

选项:

A.

Only Statement 1

B.

Only Statement 2

C.

Both Statement 1 and Statement 2

解释:

C is correct. Both Statement 1 and Statement 2 are correct.Statement 1 is correct because, similar to a long-only portfolio, a long–short portfolio can be structured to have a gross exposure of 100%. Gross exposure of the portfolio is calculated as the sum of the long positions and the absolute value of the short positions, expressed as percentages of the portfolio’s capital.
Gross exposure = Long positions + |Short positions|
Gross exposure long-only portfolio = 100% (Long positions) + 0% (Short positions) = 100%
Gross exposure long–short portfolio = 50% (Long positions) + |–50%| (Short positions) = 100%
Statement 2 is correct because long-only investing generally offers greater investment capacity than other approaches, particularly when using strategies that focus on large-cap stocks. For large institutional investors such as pension plans, there are no effective capacity constraints in terms of the total market cap available for long-only investing.

Statement 2 A long-only portfolio generally allows for greater investment capacity than other approaches, particularly when using strategies that focus on large-cap stocks. Which of Garcia’s statements regarding investing with long–short and longonly managers is correct? 


尽管short-selling会有限制,但是同时focus on large-cap stocks的Long-short是不是应该比Long-only approach的capacity更大呢?或者说不差于呢?

1 个答案

maggie_品职助教 · 2020年01月21日

investment capacity指的是你能够实现你投资判断的能力,因为short position的限制会更多(很多股票不允许卖空),也就是long-short碰到不能做交易的概率会更大。这与卖空获得更多资金来做多,指的是你认为涨的时候可以有更多的资金来支持。这是两码事。

装甲掷弹兵 · 2020年02月08日

“investment capacity指的是你能够实现你投资判断的能力,因为short position的限制会更多(很多股票不允许卖空)” 可是long only 对于每一只股票都不允许卖空啊

maggie_品职助教 · 2020年02月10日

因为long-only的判断就是只有买没有卖啊,允不允许做空对它没影响。因为相比小盘股,大盘股交易量大、流动性好,你要是看涨,long 大盘股的股票是不会收到任何限制的。而小盘股呢,你认为某只股票被低估,想买入,但可能买不到。

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