Turn risk into a reviewable amount
Trade risk includes more than getting market direction wrong: loss magnitude, speed of price changes and ability to exit also matter. Identify where the idea becomes invalid, then set a loss budget. For a linear instrument, entry-to-exit distance multiplied by units and the value multiplier gives approximate price loss. Add costs and a worse-execution scenario separately.
Example: size, costs and slippage
Assume a $100 loss budget, a stop distance of $2 per unit and hypothetical total fixed costs of $10. A size of 45 units has $90 of price risk plus $10 of costs. If the exit is $0.50 worse per unit, another $22.50 is added, taking the total loss to $122.50. The planned stop therefore is not a guaranteed loss ceiling.
Leverage, margin and notional value
Margin supports a position but is not an independent measure of maximum loss. If a linear position has $20,000 notional value and $1,000 margin, an adverse 1% move creates approximately $200 of loss before costs: 20% of that margin. Read the rules for margin increases and forced closure, and do not assume negative-balance protection unless the applicable documents establish it.
Liquidity and price gaps
Around news, market openings or quiet periods, spreads and price gaps may increase. A limit order may remain unfilled and a market order may execute across several prices. If the market passes through a stop level, the exit can be worse than planned. When choosing size, consider the next event and trading-session conditions as well as ordinary volatility.
Combined risk and correlation
Several apparently different trades may depend on the same driver, such as the dollar, interest rates or an industry. Buying multiple assets with similar exposures does not necessarily provide meaningful diversification. List each position’s open risk alongside the others and consider a scenario where the shared driver moves against you. Correlations are not fixed and can change during market stress.
Costs, currency and counterparty
Spreads and commissions are only part of the cost. Financing, currency conversion, contract rollover and differences between expiries can change results. When the account and instrument currencies differ, converted gains and losses fluctuate too. Check the contracting entity, asset-holding arrangements and complaint route; interface quality is no substitute for reviewing the contract and service provider.
Drawdown and trader behaviour
After a 20% decline, a 25% gain is needed to recover the initial balance; after a 50% decline, the required gain is 100%. Increasing size to recover quickly can magnify the next loss. Before starting, write clear conditions for stopping a session, reviewing the method and reducing activity. Appropriate limits depend on your circumstances; site examples are not personalised limits.
Checklist before accepting risk
Do you understand the product and contract multiplier? Have you considered a worse exit and several simultaneous losses? Is money needed for living expenses kept outside the trade? Do you know how to check status after a connection failure? An unclear answer identifies further research. This page does not replace product risk disclosures, assessment of personal circumstances or independent advice.