Glossary term
Volatility Risk Premium
The volatility risk premium is the difference between option-implied volatility and the volatility that is later realized.
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What Is the Volatility Risk Premium?
The volatility risk premium is the difference between volatility priced into options and the volatility that is later realized by the underlying asset. It is often discussed as the tendency for implied volatility to trade above subsequent realized volatility over many periods.
The premium exists because investors often pay for protection against uncertainty, and option sellers require compensation for taking the other side of that risk.
Key Takeaways
- The volatility risk premium compares implied volatility with realized volatility.
- A positive premium means options priced in more volatility than later occurred.
- Option sellers may try to earn this premium, but they face tail risk.
- The premium can disappear or reverse during market stress.
- It is a risk premium, not a guaranteed source of return.
How the Premium Works
Implied volatility comes from option prices. Realized volatility is measured from actual price movement over a completed period. If options imply a large future move and the underlying asset moves less than expected, the volatility risk premium was positive over that period.
Strategies that sell options, variance exposure, or volatility-linked instruments may attempt to capture this spread. The trade is not free money. The seller is exposed to sudden jumps, crashes, volatility spikes, and gap risk.
Implied vs. Realized Volatility
Measure | What it reflects | Timing |
|---|---|---|
Implied volatility | Volatility embedded in option prices | Forward-looking |
Realized volatility | Actual price movement over time | Backward-looking after the period |
Volatility risk premium | Difference between implied and realized volatility | Known only after realized volatility is observed |
Measurement Choices
The premium can be measured in several ways, such as comparing an implied volatility index with later realized volatility or comparing variance swap levels with realized variance. The method matters because volatility and variance are related but not identical measures.
The time horizon also matters. A 30-day premium and a one-year premium can tell different stories about market pricing, event risk, and investor demand for protection.
What Investors Watch
Investors watch whether implied volatility is unusually high or low compared with recent realized volatility, long-term realized volatility, event risk, and market stress. The comparison helps frame whether options look expensive or cheap relative to recent movement.
The premium can be especially unstable around earnings, central bank meetings, credit stress, geopolitical events, or crowded short-volatility trades. In those settings, realized volatility can exceed what options implied.
Why the Risk Is Real
Volatility-selling strategies can earn small gains for long periods and then lose sharply in a crisis. That payoff pattern is why risk controls, position sizing, hedging, and drawdown limits matter more than the average premium alone.
The term should be read as compensation for bearing volatility uncertainty, not as evidence that selling volatility is automatically attractive.
The Bottom Line
The volatility risk premium is the gap between expected volatility priced in options and volatility that actually occurs. It can reward investors who sell volatility, but the premium exists because the losses can be sudden and severe.