- When volatility is above its mean to is a time to sell volatility.
- The seller of the options wants implied volatility to forecast greater moves than realized volatility will be.
- Not all stocks are good products for premium sellers because implied volatility is consistently wrong in predicting the actual moves/volatility.
However, if we were to expand our range to more range bound volatile indices like emerging and global markets we have more risk, but we have much more decent opportunity of implied volatility outweighing realized volatility.
If we were to sell premium in global indices we would overall have the edge. Even statistically index short premium works (You would especially know if you have ever watched the Karen the Super trader interviews). However, in individual stocks, commodities, currencies, and extremely volatile markets these rules do not always hold true. In fact, we will often see outliers where long premium makes sense. These are often the high flying stocks like TSLA or NFLX. Sometimes they are even commodities such as Natural Gas. However, overall short premium still wins, but the premium sellers (usually me) can get burned severely in these underlyings that have such large moves.
What we also must understand is that stocks/markets that behave this way take a long time to mean revert. For example, TSLA has consistently had a discrepancy of realized volatility being much higher than implied for months (you are looking at weekly charts BTW). It is also the same with NFLX. These stocks are premium buying stocks, and these are stocks that I try to avoid selling volatility in. However, when the discrepancy goes the other way their is opportunity.
This is also how I like to use historical volatility in conjunction with IV Rank. I try to look at both before I make a decision. This is especially true when I try and enter a core position where I plan to be short for a while because their is a large discrepancy. My point in all of this is simply "make sure you being paid for the risk you are taking." I always prefer short premuim and even with "undefined risk", but I don't want to be caught in those scary outliers.
Also, I suggest you read this article from Al Sherbin. It is some very interesting views on AAPL historical distributions.
Al's Calls of the Day