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6#
发表于 2011-7-13 14:48
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You can think of it like this:
Futures/Forwards are contracts to buy at a future date at a particular price. Both the long and short side can take a profit or loss on the contract.
- If the price goes up long benefits. Short pay off long.
- If the price goes down short benefits. Long pay off short.
Options are not like Futures/Forwards because it essentially puts a floor on your losses for either side of the trade.
- If you long a call option you put a floor on your losses. If the price goes down, you don't take a loss as you would if you went long on a futures contract. You simply let the option expire as worthless. However if the price goes up, you exercise your option and take your profit.
- If you long a put option you also put a floor on your losses. If the price goes up, you don't take a loss as you would if you went short on a futures contract. You simply let the option expire as worthless. However if the price goes down, you exercise your option and take your profit.
This floor on your losses comes at a price. Which is the option premium you pay to the short side to initiate the position.
If you go short on a put or call option, you simply collect your option premium. If the price doesn't go your way you must pay off the long side when they exercise their option. |
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