and Percentile are sometimes confused and sometimes used interchangeably, but they are completely different metrics. Today's segment explores the differences.
IV rank simply gauges the current level of IV relative to the IV range over the past 52-weeks. For example, an IV rank of 50% means the current level of IV is right in the middle of the 52-week range (a current IV of 15% compared to the 52-week low of 10% and the 52-week high of 20%).
IV percentile calculates the percentage of days in the past 52-weeks in which the IV was lower than the current level. In other words, an IV percentile of 80% means that 80% of the days in the past 52-weeks have had lower levels of IV.
The differences between the twomeasurements was examined by Dr. Data (Michael Rechenthin, Ph.D.) on Skinny on Options Data Science, on November 12th, 2015. Jacob also examined the two on on March 13th, 2014.
Watch this segment of “Options Jive” with Tom Sosnoff and Tony Battista for the valuable takeaways and a better understanding of the difference between IV Rank and IV Percentile. Additionally, we show how you can install IV percentile on the thinkorswim platform.