Source-aware field guide · 20 answers
Trading Risk Management
Operational definitions for trade, portfolio, counterparty and process risk, with limits and evidence that can be reviewed before exposure is taken.
Published · reviewed for scope, source visibility and answer ownership
How to use this guide
Operational definitions for trade, portfolio, counterparty and process risk, with limits and evidence that can be reviewed before exposure is taken. The guide is written for traders, risk teams, brokerage operators and strategy reviewers. The collection focuses on defining and monitoring exposure. It does not prescribe a suitable limit or remove the need for regulated advice.
Use every answer to resolve one operational question: What loss or failure is being limited, how is it measured, who can change the limit, and what happens when it is reached? A limit is only as reliable as its valuation data, enforcement point and exception process. Historical loss estimates can understate new conditions.
The supporting set is CFTC — Eight things to know before trading forex; NFA — Security futures risk disclosure; Investor.gov — Assessing your risk tolerance. These links provide standards, regulator material or official product documentation for the subject; they do not imply endorsement, worldwide applicability or a verified feature in a particular deployment. Check the current source, contract, configuration and qualified local advice before a production, trading or compliance decision.
What Is Risk per Trade?
Risk per trade is a pre-trade estimate or cap on loss for one position or idea under stated entry, exit, size and gap assumptions.
- Use it to
- Translate a monetary or percentage limit into size using the actual contract and stop model.
- Check the boundary
- An intended stop price does not guarantee the maximum loss during gaps or execution failure.
What Is an R-Multiple?
An R-multiple expresses a trade outcome relative to a defined initial risk amount, with one R equal to that recorded risk unit.
- Use it to
- Preserve the initial risk, later adjustments, costs and realized outcome.
- Check the boundary
- Changing the denominator after the result makes comparisons misleading.
What Is Risk-Reward Ratio?
A risk-reward ratio compares a defined potential loss with a defined potential gain for a scenario, without including its probability by itself.
- Use it to
- Use consistent price, cost and execution assumptions for both sides.
- Check the boundary
- An attractive ratio can still have negative expectancy or unrealistic exits.
What Is Trading Expectancy?
Trading expectancy is the probability-weighted average outcome per observation, commonly estimated from win rate and average win and loss under a stable counting rule.
- Use it to
- Calculate from net outcomes and report uncertainty, sample period and regime.
- Check the boundary
- A positive historical estimate is not a promise and can be dominated by a few trades.
What Is Risk of Ruin?
Risk of ruin estimates the probability that a process reaches a defined loss or capital threshold under a chosen return and dependency model.
- Use it to
- State the ruin level, bet sizing, distribution and serial-correlation assumptions.
- Check the boundary
- Simple formulas can materially understate fat tails, changing size and clustered losses.
What Is Portfolio Heat?
Portfolio heat is a chosen aggregate of open-position risk estimates relative to capital, using declared stop and correlation assumptions.
- Use it to
- Monitor combined planned loss rather than treating each trade in isolation.
- Check the boundary
- Adding individual stop losses can ignore gaps, common factors and execution constraints.
What Is Correlation Risk?
Correlation risk is the possibility that positions thought to be diversified move together, especially during stress or because they share underlying drivers.
- Use it to
- Measure exposure across several horizons and run common-shock scenarios.
- Check the boundary
- Historical correlation is unstable and can rise when liquidity falls.
What Is Concentration Risk?
Concentration risk is disproportionate exposure to one instrument, issuer, currency, sector, strategy, counterparty or shared factor.
- Use it to
- Group positions by economic driver and compare them with explicit caps.
- Check the boundary
- Different symbols can represent the same underlying risk.
What Is a Leverage Cap?
A leverage cap limits a defined exposure measure relative to equity, margin or another capital base under a documented calculation.
- Use it to
- Specify gross or net exposure, valuation currency, included instruments and enforcement timing.
- Check the boundary
- Netting can conceal offset failure and a ratio can jump as equity falls.
What Is a Daily Loss Limit Policy?
A daily loss limit policy defines the loss measure, baseline, reset time, included costs and actions that apply within a stated day.
- Use it to
- Implement one timezone and test open, closed and pending exposure around the reset.
- Check the boundary
- Ambiguous equity versus balance rules create disputes and inconsistent enforcement.
What Is a Maximum Drawdown Policy?
A maximum drawdown policy limits decline from a defined capital peak or starting value under static, trailing or other stated rules.
- Use it to
- Write the baseline, update frequency, floor, cap and breach event in examples.
- Check the boundary
- The phrase maximum drawdown does not reveal which rule is being enforced.
How Should Stop Placement Be Reviewed?
Stop placement selects a protective trigger using strategy logic, market structure, volatility and acceptable loss, then sizes exposure around that decision.
- Use it to
- Document the invalidation reason separately from the amount a trader wants to risk.
- Check the boundary
- Placing a stop does not guarantee the exit price or prevent technology failure.
What Is a Position Limit?
A position limit caps quantity, notional, contracts or another exposure measure for an account, instrument or group.
- Use it to
- Define aggregation, pending orders, hedges, conversions and breach actions.
- Check the boundary
- Separate accounts or symbols can bypass a limit if economic exposure is not grouped.
What Is an Exposure Limit?
An exposure limit caps a selected gross, net, directional or factor-based measure across positions and obligations.
- Use it to
- State the measure, valuation frequency, hierarchy and exception owner.
- Check the boundary
- Gross and net limits answer different questions and should not be substituted.
What Is Gap Risk?
Gap risk is the possibility that price moves between available trading levels or sessions so an order executes materially beyond its intended level.
- Use it to
- Stress price discontinuities, market closure, order type and liquidity assumptions.
- Check the boundary
- Historical bar closes can hide the path and executable prices during a gap.
What Is Event Risk?
Event risk is exposure to abrupt repricing or operational change around scheduled or unscheduled information, decisions or incidents.
- Use it to
- Maintain an event taxonomy, affected instruments, lead time and permitted actions.
- Check the boundary
- Calendars can be incomplete and the largest events may be unexpected.
What Is Weekend Risk?
Weekend risk is exposure carried while normal liquidity or venue access is reduced and information can accumulate before reopening.
- Use it to
- Review holding permissions, financing, reopen gaps and emergency controls.
- Check the boundary
- Round-the-clock instruments can still experience thin liquidity and provider maintenance.
What Is Counterparty Risk?
Counterparty risk is the possibility that another party fails to perform financial or operational obligations under the agreed relationship.
- Use it to
- Map legal entities, settlement flows, collateral, limits and concentration.
- Check the boundary
- Brand recognition, regulation or past performance does not eliminate counterparty exposure.
What Is Liquidity Risk?
Liquidity risk is the possibility that a position cannot be opened, valued or closed in the required size and time without unacceptable cost or impact.
- Use it to
- Stress executable size, spread, depth, venue access and funding needs.
- Check the boundary
- Normal-market averages can conceal severe deterioration during stress.
What Is Operational Risk in Trading?
Operational risk is loss or disruption arising from failed people, processes, systems or external events across the trading lifecycle.
- Use it to
- Connect each critical workflow to controls, owners, evidence and recovery tests.
- Check the boundary
- Software uptime alone does not cover manual error, bad data, fraud or third-party failure.
Primary and official references
These sources establish definitions, standards or official product behavior used across this guide. Follow the exact source and check its current version before a live implementation.