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dojomouse
11y ago
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No, volatility can increase as well as decrease returns.
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yummyfajitas
11y ago
Downward volatility hurts you more than upward volatility helps you (on average). That's where the -sigma^2/2 term comes from.
dojomouse
OP
11y ago
Yes, so you could write
r + (amount that upward volatility helps) - (amount that downward volatility hurts) > g
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