Implied volatility (IV) is directly related to the value of the premiums we receive when selling covered call and put options. The more volatile the underlying security, the greater the premium and risk exposure. I have written quite a bit about IV over the years and distinguished it from historical volatility (HV). This article will focus in on implied volatility as it relates to the expected price movement of a stock or exchange-traded fund (ETF) during the life of our sold option contract.

Definitions

Historical volatility is the actual price fluctuation as observed over a specific time frame. More specifically, it is the annualized standard deviation of past stock price movements.

Implied volatility is a forecast or market opinion of the underlying security’s volatility as implied by the option’s prices in the current market.

For short-term option sellers like us, current information (IV) is much more important than historical data which may be more appropriate for longer-term investors.

Implied volatility and our ETF Reports

Many retail investors feel that exchange-traded funds are all low-risk investments because they consist of a basket of stocks, some moving up in price and some moving down and so the security as a whole will be less risky than a single stock. This is true in general but not in all cases. As a result, we provide IV stats in our ETF Reports on pages 7 and 8:

covered call writing and implied volatility

Implied Volatility Stats for ETFs

At the time this report was crafted, the S&P 500 had an IV of 9.74 (yellow field) while the ETF ASHR (top of list) had an IV of 27.44, nearly triple that of the overall market. This means more premium but greater exposure to the downside.

Underlying parameters for IV calculations

Most IV stats are based on projected price movement of the security over the next one year based on 1 standard deviation. So how does this relate to our sale of a (say) 1-month contract? How do we project the expected price movement during our contract obligation? If a stock shows an IV of 30%, it does not mean that it is likely to move 30% in either direction during the contract month because IV is an annual statistic. This is the key takeaway to understand. Furthermore, since IV stats are based on 1 standard deviation, we can expect the accuracy of the price range to be correct 68% of the time. The math is not critical as much as understanding the limitations of IV stats but I’m going to give you a hypothetical example just to be thorough.

Implied Volatility/Standard Deviation Formula

Let’s start with a potential incorrect interpretation of IV stats. Let’s say stock BCI is trading at $300.00 and shows an IV of 30%. Some may decipher that to mean that BCI will trade between $210.00 and $390.00 during the life of our monthly contract. A correct translation is that there is a 68% chance BCI will trade between $210.00 and $390.00 over the next 1 year. The formula to convert this information to a specific contract at a specific point in time:

(Stock price) x (Annualized Implied Volatility) x (Square Root of [days to expiration/365]) = 1 standard deviation

In the hypothetical above with 20-days remaining until expiration, the formula results would calculate to:

$300 x 30% x SQRT (20/365) = $21.07

This means that there is a 68% chance that BCI will trade between $278.93 and $321.07 through contract expiration (not between $210 and $390)

***It is not necessary to memorize or even utilize this formula but it is essential to understand the time frame and limitations of IV statistics.

Discussion

Implied volatility stats are generally framed in annual projections and based on 1 standard deviation. To calculate projected price movement during the life of a contract, a formula can be utilized which will identify a 68% chance of that more restricted range.

Your generous testimonials

Over the years, the BCI community has been incredibly gracious by sending our BCI team email testimonials sharing stories as to what our educational content has meant to their families. Moving forward, we have decided to share some of these testimonials in our blog articles. We will never use a last name unless given permission:

Good morning Alan, 

My name is FRANCESCO GUERINI, Italian BCI Premium member living in the United Arab Emirates.

After a few months on your books and DVDs which I thoroughly enjoyed, I finally started paper trading and everything starts making sense and it feels like it is all coming together …slowly the fog dissipates thanks to yours and your team’s expert guidance and mentorship that I believe is second to none.

Thanks for all you have done and continue doing for us regular working Joes all over the world and for our families, leading the way to consistent profits and hopefully financial freedom one day.

You are a truly remarkable leader and mentor!

Kind regards,

FRANCESCO

Upcoming event

February 6th – 9th 2020 Orlando Money Show

BOOTH 306

Information to follow

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Market tone data is now located on page 1 of our premium member stock reports.

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