Options and Interest rates

I'm confused. I've read conflicting effects of interest rates on option prices.

Some say as interest rates rise:
-Puts decrease in value while calls increase in value.

Others say as interest rates rise:
-Both puts and calls decrease in value.

What's the right answer?

NVM: I think I know the answer.
-The first statement takes into account the effect of interest rates on the underlying.
-The second statement assumes that options exist in a vacuum.

Thus, I would say the first statement is most accurate.
 
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