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发表于 2013-4-22 10:22
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Book seems to indicate otherwise.
selling a call + holding the underlying - is less risky than selling a naked call. By virtue of willingness to bear some risk - returns are also reduced. So a covered call by that definition has lower downside as well as lower upside.
Quote:
Pg 407-408
Because of the importance and widespread use of covered calls, it is worth- while to discuss this strategy briefly to dispel some misunderstandings. First of all, some investors who do not believe in using options fail to see that selling a call on a position in the underlying reduces the risk of that position. Options do not automatically increase risk. The option part of this strategy alone, viewed in iso- lation, seems an extremely risky strategy. We noted in Section 2.1.1 that selling a call without owning the stock exposes the investor to unlimited loss potential. But selling a covered call—adding a short call to a long position in a stock— reduces the overall risk. Thus, any investor who holds a stock cannot say he is too conservative to use options.
Following on that theme, however, one should also view selling a covered call as a strategy that reduces not only the risk but also the expected return compared with simply holding the underlying. Hence, one should not expect to make a lot of money writing calls on the underlying. It should be apparent that in fact the covered call writer could miss out on significant gains in a strong bull market. The compensation for this willingness to give up potential upside gains, however, is that in a bear market the losses on the underlying will be cushioned by the option premium.
It may be disconcerting to some investors to look at the profit profile of a covered call. The immediate response is to think that no one in their right mind would invest in a strategy that has significant downside risk but a limited upside. Just owning the underlying has significant downside risk, but at least there is an upside. But it is important to note that the visual depiction of the strategy, as in Exhibit 6, does not tell the whole story. It says nothing about the likelihood of certain outcomes occurring. |
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