Portfolio Risk & Exposure Calculator
Review portfolio gross and net exposures, asset-class concentrations and currency exposures using manually entered positions.
Loading interactive calculator…
How this tool works
Review portfolio gross and net exposures, asset-class concentrations and currency exposures using manually entered positions. Inputs should represent your own assumptions, current instrument specifications and account denomination; no automatic market-data feed is used unless the page explicitly states otherwise.
Gross exposure = sum of absolute position market values; net exposure = sum of signed long and short market values.
Worked example
A £5,000 stock long and a £2,000 short index position give £7,000 gross exposure and £3,000 net exposure.
What to check before relying on a result
Check the direction of the trade, units and currency, market contract specifications, realistic spreads and slippage, execution conditions, any applicable taxes and fees, and whether the assumed model fits your instrument. A calculator does not eliminate market risk.
Frequently asked questions
Does this tool calculate portfolio correlation?
No. A static exposure breakdown cannot substitute for time-series correlations, stress testing or a full risk model.
Can I enter different currencies?
Use a common valuation currency for all entered values; the currency column is a classification label only.
Related trading tools
Position Size Calculator
Calculate an illustrative trading position from a predefined monetary risk limit and your stop-loss distance.
Open free tool →Risk ManagementRisk Reward Calculator
Compare a stop-loss with up to three profit targets and see the required reward in R multiples.
Open free tool →Go beyond the calculation
Learn how to interpret risk, analyse financial markets and develop a structured educational framework through Traders MBA programmes.
Explore professional trading courses →How do you measure gross, net and concentrated portfolio exposure?
Gross exposure adds the absolute market value of every position; net exposure adds signed long market values and subtracts short market values. The two measures answer different questions: total positions outstanding versus directional balance. A portfolio may have low net exposure but substantial gross exposure, leverage and correlated risk.
How to use this calculator correctly
- Step 1. List each position as an instrument, asset class, currency label, long/short direction and market value.
- Step 2. Convert each value yourself into one common reporting currency before entering the CSV.
- Step 3. Review gross market value, signed net market value and the share of the largest position.
- Step 4. Study asset-class and currency classifications, then separately assess correlations and underlying economic exposures.
Worked comparisons
These are illustrative arithmetic examples, not forecasts or market quotations. They show how changing assumptions affects the calculation.
| Illustrative portfolio | Long positions | Short positions | Gross / net exposure |
|---|---|---|---|
| Two positions | £5,000 stocks | £2,000 index | £7,000 / +£3,000 |
| Market-neutral appearance | £10,000 stocks | £10,000 index | £20,000 / £0 |
| One-sided example | £8,000 stocks + £2,000 bonds | None | £10,000 / +£10,000 |
How to interpret the results
An apparently offsetting long and short may not neutralise risk: long US technology shares and short a broad equity index share drivers but can react differently to sector earnings. Grouping by a currency label is useful for inventory, but it is not the same as calculating every company's or derivative's ultimate FX sensitivity. This calculator is a first-pass position inventory, not a correlation matrix, VaR engine, delta-adjusted risk model or stress test.
Common mistakes and limitations
- Do not mix market values denominated in GBP and USD without manual conversion; the tool does not perform it.
- A short position is entered as a positive absolute value with a Short label; negative amounts are not the expected CSV format.
- Gross exposure is not maximum potential loss and is not a reliable substitute for liquidity and correlation analysis.
Further questions
Can a portfolio have zero net exposure and still lose money?
Yes. The longs and shorts may not move symmetrically, and basis risk, financing and concentration remain.
Does the tool calculate value at risk?
No. It does not estimate statistical loss distributions, correlations, derivative Greeks or tail scenarios.
Are currency labels automatically converted?
No. All values must first be entered in one common valuation currency; labels only group exposure.
Related Traders MBA learning and references
Read the relevant educational analysis, tools and primary-source specifications:
Figures are illustrative and depend on input assumptions. This material provides general education, not financial advice, trading signals or a forecast. Verify instruments, exchange or broker terms and execution costs before relying on a calculation.