A reader recently reached out to me, asking about a trade I put on.
I’m paraphrasing, but the conversation went something like this:
Reader: “The implied volatility of the MSTR June 450 calls is 64.7%. That is far from cheap, no?”
Me: “The absolute number of implied volatility is meaningless to me. I’m paying attention to its relative value. I want to know where IV is now compared to where it’s been.”
Reader: “Wow. That amazes me. I always thought the implied volatility was an indication of how expensive an option was. Could you write an educational piece on this sometime please?”
Dear reader, your wish is my command.
Here’s the thing about options premiums (and implied volatility, or “IV,” which measures premiums) – they mean revert.
When IV spikes, it’s only a matter of time before it comes back down. And when IV is low, it’s likely that any sudden premium moves will be to the upside, not the downside.
Why is this true? [Read more…]

