Option Greeks - Vanna
This wiki is incomplete.
The vanna of an option is the rate of change of delta with respect to volatility.
\[ \text{ Vanna} = \frac{ \partial \Delta } { \partial \sigma } = \frac{ \partial^2 V } { \partial \sigma \partial S } = \frac{ \partial \nu } { \partial S } \]
It is sometimes also known as "D Del V".