# Changing the strike prices of option positions

You can change the strike price of:

- a single option position;
- all option positions in a strategy;
- all option positions in several strategies.

When you change the strike price, the strike of the underlying fills also will be changed.

## The strike price of separate position

The strike price can not be changed if:

- an option position contains any real fills;
- a strategy contains a position (option call/put) at the strike we want to set;
- a strike is not in the option series.

You can change the strike price in two ways:

Click on a cell and select the strike from the drop-down list of available strikes. Some strike prices may not be available.

This means that the strike price can not be set.

Right-click on the row and select the

**Shift**command. This will open a list of available subcommands:- Shift N strike up (+ N) – move N strikes up
- Shift N strike down (-N) – move N strikes down

The maximum number of strikes, on which the price can be shifted up/down is 5, the minimum is 1.

For example, there is a position on the instrument

`CME ES FC U16 2180`

. The strike is`2180`

with the step distance between the strikes being`5`

. If we select the**Shift 3 strike up**command, the price will be moved up by`3`

strikes and will become`2195`

(you can check this in the Option Desk).So the position’s strike will become

`2195`

.Some commands may not be available, if it is not possible to shift the price on the interest strike price.

## The strike prices of all positions in a strategy

The strike price can not be changed if:

- there are any option positions containing any real fills;
- any of the target strikes are not in the option series.

You can shift the strike prices of all positions in the strategy simultaneously.
To do this, right-click on the strategy and select **Shift → Shift N strike up/down** command. The **N** is a number of strikes.

Some commands may not be available, if it is not possible to shift the price on the interest strike price.

## The strike prices of all positions in several strategies

The strike price can not be changed if:

- there are any option positions containing any real fills;
- any of the target strike prices are not in the option series.

To shift the strike prices click the **Shift up (+1)**/**Shift down (-1)** button on the top panel.