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2#
发表于 2013-4-3 02:47
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You are incorrect. Calls have a direct relationship with interest rates for this reason: If I own a call, i am waiting around to buy the stock, so if int rates go up, then I could get rid of the call and invest at that now higher risk free rate, therefore the call value must go up for me to stay with the call rather than ditching it for rf rate.
puts are inversely related because: i am waiting around to SELL the stock. So if rates go up, then I can ditch the put and earn the higher RF rate. Therefore that is an inverse relation: int rts went up but the value of the put goes down cuz it’s not worth as much to me anymore.
If rates go down, and i am waiting around to sell the stock, then i dont want to get rid of the put to earn that low int rate, i want to keep the put, so that value of the put goes up.
Let me know if that helps. |
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