Volatility Trading

Most traders bet on direction: up or down. Volatility traders bet on how much prices will move, regardless of direction, or on how the market's expectations of movement will change. Options make this possible, because their prices depend on expected volatility. A volatility trader might buy options expecting a quiet market to become turbulent, or sell options expecting fear to fade. This lesson brings together the ideas from the options and volatility tracks into a framework for trading volatility.

Two kinds of volatility bets#

Many trades mix both. A long straddle gains if the stock moves a lot (realised volatility) and if implied volatility rises (vega).

Implied vs realised: the core trade#

If you buy options and delta hedge them, your profit depends mainly on whether realised volatility exceeds the implied volatility you paid. See Gamma Scalping and Delta Hedging.

The volatility risk premium#

On average, implied volatility for equity indices has exceeded subsequent realised volatility. Investors pay for protection, and sellers collect a premium for bearing crash risk. This makes systematic volatility selling profitable on average, but with severe drawdowns in crises. Long volatility positions lose on average but can pay off spectacularly in crashes, which is why some funds hold them as "tail hedges". See Theta Harvesting.

Instruments#

Forecasting volatility#

Volatility traders build forecasts using:

• Recent realised volatility across several windows. See Historical and Realized Volatility.
• GARCH and related models, which capture clustering. See GARCH.
• Event calendars: earnings, central bank meetings, elections.
• Implied volatility history: IV rank and percentile. See IV Rank and IV Percentile.
• Market structure: dealer positioning and flows. See Dealer Gamma Exposure.

Volatility is more forecastable than direction: high volatility tends to be followed by high volatility, and it tends to revert to its average over time.

Risk management for volatility traders#

1. Know your Greeks by bucket: vega by expiry and strike, gamma by date. See Managing Portfolio Greeks.
2. Stress test combined moves in price and volatility. See Stress Testing and Scenario Analysis.
3. Respect asymmetry: short volatility losses can be sudden and large; long volatility costs can bleed slowly.
4. Watch liquidity: options spreads widen in stress, just when adjustments are needed.
5. Size for the worst case, not the average.

Who trades volatility#

• Options market makers, who manage volatility risk across their books.
• Volatility hedge funds and relative value desks.
• Pension funds and insurers selling volatility for income or buying it for protection.
• Individual traders using options strategies and VIX products.

Common mistakes#

• Confusing cheap options with cheap volatility: a low dollar price does not mean low implied volatility.
• Selling volatility with no plan for spikes.
• Buying volatility after a spike, when it is most expensive.
• Ignoring transaction costs of hedging.

Frequently asked questions#

What is volatility trading?#

Trading the size of price movements, or changes in expected movement, rather than direction, usually with options and volatility products.

How do you profit from volatility?#

By buying options when you expect larger moves or rising implied volatility, or selling them when you expect smaller moves or falling implied volatility, often with delta hedging.

What is the volatility risk premium?#

The tendency for implied volatility to exceed the volatility that actually follows, which rewards sellers on average for bearing crash risk.

Next, learn what happens around events in Volatility Crush and Expansion.