Implied vs. Realized Volatility
The trader's dollar bet — what the option market expects vs. what actually happens
Every option trade in the world reduces to a single bet, no matter how it is dressed up: a bet on whether the volatility implied by the option's premium will turn out to be higher or lower than the volatility the underlying actually delivers between now and expiration. The buyer of the option is implicitly saying realized volatility will exceed implied. The seller is implicitly saying realized volatility will fall short of implied.
Direction, strike, time, structure, and Greeks are all secondary — they are the mechanics of how the bet gets expressed. The bet itself is one number against another. This lesson is about that bet — its empirical history, its persistent gap, its cyclical compression and expansion, and the structural reasons why both buyers and sellers of volatility can be profitable on average if they understand which side of the bet they are on and when.
That is the opening. Finishing a lesson is where it stops being interesting and starts being useful: the full lesson runs to 8 sections and ends with 6 practice questions. A free account is what opens the rest, and the other 255 lessons in the Academy with it. No card.
What this lesson covers
- 1Why implied volatility tends to exceed realized — the structural reason
- 2How the bet is actually placed — Gamma scalping and the dollar bet
- 3Implied vs Realized Vol Tracker
- 4Volatility risk premium and the dollar P&L of a Delta-hedged position
- 5Variance risk premium — empirical SPX measurements across studies
- 6Calm 2017 → Volmageddon February 2018 — the canonical regime cycle of the variance risk premium
- 7Where to see this on the platform
- 8Summary