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发表于 2010-7-23 12:35 PM
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好像记得理论上TIME DECAY是按TRADING DAY算的
wyemlyy 发表于 2010-7-23 09:24 
googled
Time decay never stops, because anything can happen at any time. Events on a weekend or holiday can definitely have an impact on the markets, even though they may not be open.
Options are insurance: sellers are taking the risk in exchange for premium, and buyers are throwing off the risk, paying premium in the process. Even if your insurance company is closed, your insurance still is in effect. Same with options. |
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