Volatility Targeting
Volatility targeting adjusts position size so that a portfolio’s expected volatility stays near a chosen level: exposure is cut when markets become volatile and raised when they calm down.
Volatility targeting sizes positions so that a portfolio's expected volatility stays close to a chosen level. When markets get choppier, exposure is cut; when they calm down, exposure is raised. It relies on a volatility estimate, usually from recent returns, and that estimate can be wrong when markets change quickly.
- Category
- Risk Management
- Reading time
- 3 min
- Also called
- Volatility scaling, Vol targeting, Risk targeting
- Updated
Volatility targeting in plain words
The basic measure is realised (historical) volatility: the standard deviation of an asset's returns over a chosen window.1
Volatility targeting raises exposure when markets are calm and cuts it when they're turbulent.2
It works because high volatility tends to persist for a while.2
How to apply a volatility target
Pick a target
Choose a hypothetical annual volatility target, for example 10%.
Estimate volatility
Compute the standard deviation of returns over a time window.1
Scale exposure
Scale position size inversely to the volatility estimate.2
Cap leverage
Set a maximum exposure so calm markets do not push leverage too far.
Rebalance on a schedule
Update the estimate and size regularly.
Review results
Check realised volatility against the target.
Worked examples
Example 1 — Choppy market
Cut to halfA hypothetical target is 10%; estimated volatility rises to 20%.
| Target | 10% |
| Estimate | 20% |
| Exposure | 50% |
Exposure is scaled back during high-volatility periods, here to half.2
Example 2 — Calm market
DoubledThe estimate falls to 5% with the same 10% target.
| Exposure | 200% |
Exposure is levered up when volatility is low, but a cap is still needed.2
Example 3 — Calm before a storm
Caught leveredAfter a long calm, the hypothetical portfolio is at maximum exposure when a shock hits.
| Exposure | 200% |
| Shock | −8% |
In these made-up figures, a long calm spell pushed leverage up — the kind of hidden risk build-up regulators warn about.1
Fixed size vs volatility target
| Aspect | Fixed size | Volatility target |
|---|---|---|
| Exposure | Constant | Changes |
| Risk | Swings with market | Aims to be steady |
| Calm market | Same size | Larger size |
| Needs | Little | Volatility estimate |
Where it is used
Sizing
Volatility-based Position Sizing.
ATR stops
Using Average True Range as a gauge.
Trend systems
Common in Trend Following.
Risk control
Limiting Drawdown swings.
Advantages and disadvantages
Advantages
- Keeps risk steadier over time.
- May reduce extreme losses.
- Rule-based and transparent.
Disadvantages
- Relies on backward-looking estimates.
- Can add leverage before a shock.
- Trading costs from frequent resizing.
- Did not improve returns for every asset class in research.
Going deeper
Read as far as you need. Each level builds on the one before it.
Clustering
Beginner
Volatility clusters — turbulent periods tend to continue — which is why the method works.2
Evidence
Intermediate
Scaling can make extreme losses less likely, yet one study saw a better Sharpe ratio only in equity and credit portfolios.2
Low-vol trap
Advanced
Long stretches of low volatility can, paradoxically, let risk pile up.1
Common mistakes
No leverage cap
Set a maximum.
Too short a window
Noise drives sizing.
Ignoring costs
Resize less often.
Treating it as a guarantee
Shocks still happen.
Check your understanding
Test yourself before moving on. Each answer comes with an explanation.
Key points to remember
- Volatility targeting keeps expected volatility near a set level.
- Exposure falls when volatility rises.
- It relies on volatility clustering.
- Cap leverage in calm markets.
- Research shows mixed return benefits.
Frequently asked questions
Which volatility estimate is best?
Does it need leverage?
Can I use it on one trade?
Further learning
- Volatility
What volatility measures.
- Position Sizing
Sizing basics.
- Average True Range
A simple volatility gauge.
- Sharpe Ratio
Risk-adjusted return.
Sources
This article is written in our own words. The sources below support the specific facts, rules and figures marked with a number in the text. Links open the original publisher’s page.
- Bank for International Settlements. Volatility concepts and the risk premium (opens in a new tab) Checked .
- CFA Institute. The Impact of Volatility Targeting (Digest summary) (opens in a new tab) Checked .
Read more elsewhere
- Trading Metrics (our sister site): Volatility Awareness (opens in a new tab)
Educational content, not financial advice. Examples use hypothetical prices and simplified costs; actual fees, margin rules and regulations vary by broker, market and country. Trading Metrics is our sister site, under the same ownership; we are not affiliated with any other publisher linked above. Last reviewed . Report an error or request a source credit.