Let us say that a person is bearish on XYZ and they believe that by May of this year option expiration it could trade back down to maybe $330 for each share. One could simply just sell short the shares and wait to find out what occurs. However this is not a very safe venture, it’s actually quite risky because the shares could simple fall down on you and place you in a very tight situation. A wise investor will choose to go for the limited risk application of options trading. But how is he supposed to know which strikes to choose? By simply looking at the option chain as this is where he will be able to base his decision on the supposed volatility of the options. So what occurs in the case XYZ does not have reverse skew? There are certain stocks that may show flat skew, where the levels of IV are very alike to each other. Just as an example, we will look at what the spread would be worth if $390 puts were instead trading closer to the $330 put’s IV and utilize a level of 45.90 percent IV. If this was placed into an option calculator, we would be able to notice that $390 put would suddenly cost us $23.50 rather than 21.70, in other words the spread is going to be costing $18.80 rather than $17. This means there is a difference of $180 in the cost of the spread with the flat skew in comparison to the reverse skew. Therefore, when one is thinking about carrying out an option spread, it is a good idea to look into the volatility skew to make sure you will be able to gain the volatility edge on your trade. This is the reason that many investors carry out their most of their trades with option spreads. It is possible that the investor will not always be accurate with his directional preconception, therefore it in addition a good idea to have a sold option in order to offset the longer option, mainly if the sold option has a higher IV stuck to it. It is a good idea to check the option’s skew pattern before starting or getting into any sort of option spread in order to view what type of potential volatility edge can be obtained. This does not mean that one is not able to put on the act even when the skew is not in your favor. You should just be aware that you will be beginning at disadvantage in volatility if you decide to proceed in such a way. While it is true that this is a bit of a confusing subject, it is a good idea to gain knowledge about it. IV or implied volatility is real and occurs in the options market, and it is the main basis for the trading decisions that wise investors use.
To sum it up
Remember that volatility is a term or concept that explains the propensity a stock or commodity has as far as moving around in price, this can be its historical basis or its future looking basis. The movement it has is measured into a percentage number that is included into the option pricing formula and is one of the determinants that makes up an option’s price. It has been seen that reducing or increasing the volatility factor has a direct effect on the price of an option. We can also see that even though two stocks trade for the same price they can still have very impressive different option prices because of the volatility factor. We have also done a general view of volatility skew. This is an occurrence in where each individual option that is inside of an option chain will have its own individual volatility value, and this might or might not be different from its bordering option. The shape of volatility skews on a chart can either be flat, reverse, smiling, or have a forward pattern, and these can be utilized to one’s advantage when starting option spreads.