Changing an Option’s Price per Unit

For most instruments in the Results area you see a Price per Unit result.

In the Single Option page, for a vanilla option or vanilla strategy (with the exception of the straddle, strangle and butterfly strategies) you can define the required price per unit and then use that value to calculate the instrument's market volatility, Greeks and other results.

To define the required price per unit:

1. In the Single Option page enter the option’s details.
2. In the Results area, you click the pencil icon next to the Price per Unit label. The Price per Unit bid/ask fields become editable.
3. You can then enter your own values.
4. To calculate the instrument using your own defined price, you must then click the Calculate button.