X Axis

The X axis shows one of the independent variables of the options pricing model, depending on the study you choose. For more information on X axis studies, please read Option Chart Studies.

Chart Type
X Axis Metric
Label
Price
Underlying price (Default)
<symbol>
Time
Time to expiration
Days
Volatility
Volatility
Vlty
Rate
Interest rate
Rate
Frate/Yield
Foreign currency interest rate or stock dividend yield
Frate/Yield

An options chart displays the X axis label in the lower left corner. By default, the X axis in all option chart windows show underlying price, so the X axis label is an underlying instrument symbol. If you change the X axis study, the label changes to identify the selected X axis metric.

Chart Type	X Axis Metric	Label
Price	Underlying price (Default)	<symbol>
Time	Time to expiration	Days
Volatility	Volatility	Vlty
Rate	Interest rate	Rate
Frate/Yield	Foreign currency interest rate or stock dividend yield	Frate/Yield