Intrinsic value, also called parity, is the amount by which
an option is in the money. In the case of a call, the intrinsic
value is equal to the present stock price minus the strike price.
In the case of a put, the intrinsic value is equal to the strike
price minus the present stock price. Only in-the-money options
have intrinsic value. An option that is out-of-the-money has
no intrinsic value.
For example, with MSFT trading at $65.00, the MSFT January 60
calls will have $5.00 of intrinsic value. If the MSFT January
60 calls were trading at $5.70, then $5.00 of that premium would
be intrinsic value.
At the same time, the MSFT January 70 put will also have $5.00
of intrinsic value. So, if the MSFT January 70 puts were trading
for $5.70, then $5.00 of that premium would be intrinsic value.
Please view charts below for intrinsic value examples:
Extrinsic value is defined as the price of an option less its
intrinsic value. In the case of an option that is out-of-the-money
option, the entire price of the
option consists only of extrinsic
value. Extrinsic value is made up of several components, with
the largest being volatility.
In the examples above, if the MSFT January 60 calls were trading
at $5.70 and $5.00 of that was intrinsic value, then the remainder
($.70) is extrinsic value. The same also holds true for the
January 70 puts. If they were trading at $5.70 and $5.00 of
that was intrinsic value, then the rest ($.70) is extrinsic
value.