Dan
I've just started to learn about options and how to trade them. Could you please explain the above statement ?
As per my little understanding of options if there is no price change in the underlying then the intrinsic value of the option price will remain constant but the time value portion of the option price will decrease.
What i'd like to know is how will implied volatility increase the vega if intrinsic value is constant ? In other words how does implied volatility increase time value without any price change ?
Cheers
Hi Placebo
Blue is what you ask or explain and black are my answers or explanations.
As I have some time just now, I first will show for those which are very new to options, how to calculate the intrinsic value and the time value. After that I will move on with your question.
If there is no price change in the underlying
Market stays
then the intrinsic value of the option price will remain constant
Intrinsic value stays at the same price.
If the option is in the money, then the option has a real value. ( Intrinsic value )
Simple example :
Stock at: $ 52.15
Strike at: $ 50.00 call
Actual price of option: $ 3.75 (Intrinsic value and time value)
Intrinsic value: $ 52.25 - $ 50.00 = $ 2.15 or Stock price - Strike price = Intrinsic value
Time value: $ 3.75 - $ 2.15 = $ 1.60 or actual price of the option - intrinsic value = Time value
but the time value portion of the option price will decrease.
Yes. It is also called theta. Theta is the measure of the drop in an options price due to the passage of time.
How will implied volatility increase the vega if intrinsic value is constant ?
(Intrinsic value is explained above)
Vega is a measure of the change of the value of the option due to a 1% change in implied volatility.
Implied volatility is what people think, that will happen between now and expiration and not what happened in the past. So, even if markets not move, but there is some thing in the air, which may could be some thing which is not daily business, like the down grading from the USA to AA+, this will increase the Implied volatility.
In other words how does implied volatility increase time value without any price change?
Now comes the difficult part and the answer lies in the formula you use to calculate the price of an option. I have given hopefully not to complicated ideas how to understand some of this option greeks. As implied volatility is a variable, abstract part of the formula, I ask you how much you understand any of this formula?
I posted in the past here in this forum about the volatility smile and if you interested in such stuff, Google and read it. It is very theoretical stuff related to what you ask. If you only want to trade some spreads, you really do not need to think about such math.
Tc
DanPickUp