Key takeaways
- Exposure limits should be set by risk type, account group and instrument behaviour, not only by symbol.
- A useful limit framework defines soft limits, hard limits, hedge triggers and who can approve exceptions.
- Real-time monitoring matters because end-of-day exposure reports often arrive after the risk has already changed.
Dealing desk exposure limits: what to control
Dealing desk exposure limits set the boundary between accepted book risk and uncontrolled P&L movement. They tell the desk when to hold risk, hedge, reduce quoting appetite or escalate.
The common mistake is treating exposure as one number. Net EURUSD exposure is useful, but it does not show client concentration, correlated risk, pending order risk, margin pressure or exposure spread across brands and platforms.
A stronger framework separates exposure into categories the desk can act on. The goal is not to remove all risk. It is to know which risk is intentional, which risk is accidental and which risk is outside the broker's capacity.
Set limits by risk type, not only by symbol
A symbol limit is only a start. Brokers should define limits across several dimensions.
Net exposure is the directional position after client longs and shorts offset each other. It is usually the first number checked, but it can hide important risk.
Gross exposure shows total client position size before offset. High gross exposure can create execution and margin pressure even when net exposure looks small. This matters around news, rollovers and thin sessions.
Currency and theme exposure also matter. A book may look diversified by symbol but still be heavily exposed to one currency, metal, index or crypto theme. Correlation can matter more than symbol count.
Client group exposure shows whether risk is spread across normal retail flow or concentrated in profitable, fast or highly leveraged accounts. Prop firm operators should watch this closely when many accounts follow similar strategies.
Pending order exposure should be included. Stops, limits and stop-outs can become market exposure quickly. If the desk measures only filled positions, it may underestimate the next move.
Time-based limits are useful too. Some brokers carry more exposure during liquid sessions and less over weekends, holidays or product closures. The right numbers depend on the broker's balance sheet, client mix, platform setup and hedging access.
Define hedge triggers and authority
Limits matter only if the desk knows what to do when they are reached. A good policy separates warning levels from mandatory action.
A soft limit should trigger attention. The dealer may watch flow, check whether exposure is temporary, review spreads and confirm that hedging channels are available. It should require awareness, not panic.
A hard limit should require action. That may mean partial hedging, full hedging, manual review of new flow, reduced internalisation or escalation to a risk manager. The action should be written before the event, not negotiated while the market is moving.
Authority levels must be clear. Junior dealers should not decide alone whether to carry a large unhedged position. The policy should state who can approve an exception, for how long and under what conditions.
For A-book and B-book operations, the desk should define when exposure moves between the house book and external coverage. The setup for coverage and house book exposure should match the written policy. If the bridge, platform and reporting cannot support the policy, it will fail in practice.
Hedge triggers can include size, unrealised P&L movement, volatility, client concentration, market session, fill quality or repeated profitable flow from the same source. The right mix depends on the broker.
Monitor exposure in real time, not after end of day
End-of-day reports help with review, but they are too slow for active risk management. A desk needs a live view of open positions, pending orders, hedge status, realised P&L, unrealised P&L and limit usage.
The desk should be able to answer simple questions quickly:
- What is the current net and gross exposure by symbol and asset class?
- Which clients or groups are driving the exposure?
- Is the exposure hedged, internalised or partly covered?
- Are any limits close to breach?
- Are prices, fills and routing behaving normally?
Alerts should be specific. A generic high exposure alert may not help the dealer act. Better alerts show the instrument, account group, size, limit level and escalation path.
Monitoring should include platform and feed health, because exposure controls depend on accurate pricing and execution status. Delayed updates, rejected orders or feed problems can leave the desk looking at a position that has already changed. Broker teams can use monitoring and alerts to support this model.
Pricing controls help, but they are not a substitute for exposure management. Wider spreads or markups may reduce some flow, but they do not remove an existing open position. Spread rules should be coordinated with risk controls, especially in volatile periods. For related controls, see markups and spread limits.
Review breaches and adjust without moving the goalposts
Every material breach should create a short review. The goal is not to blame the dealer for every loss. It is to learn whether the limit, alert, hedge trigger and authority process worked.
A useful review asks:
- Was the limit appropriate for the instrument and session?
- Did the alert reach the right person in time?
- Was the hedge action clear?
- Was there enough liquidity to execute the hedge as expected?
- Did the exposure come from normal client flow, one group, or a platform issue?
- Should the limit be changed, or should behaviour be changed?
Risk managers should not move limits only because the desk had a bad day. Limits should change because risk capacity, client mix, product list, volatility conditions or hedging setup has changed. If limits rise whenever they are inconvenient, they stop being controls.
Prop firm operators face a related issue. Many challenge accounts may be small alone, but combined exposure can become meaningful when strategies cluster. Monitoring should include account cohorts, challenge phases and symbols commonly traded by high-frequency or news-driven participants.
Documentation should be short enough for dealers to use. Include limit tables, hedge triggers, exception rules, contacts, escalation timing and actions for degraded systems.
Technology can centralise the view. XiroLink can support LP aggregation, markups, Centroid compatible FIX, market data and monitoring, but the broker still owns the exposure policy. The system should enforce and report the policy, not define risk appetite.
Good dealing desks keep exposure management boring. Limits are clear, alerts are actionable, exceptions are visible and reviews lead to practical changes.
Frequently asked questions
How often should a dealing desk review exposure limits?
Most brokers should review limits after material breaches, major product changes and shifts in market conditions. A scheduled monthly or quarterly review is also useful, depending on trading volume and risk appetite.
Should exposure limits be the same for every symbol?
No. Limits should reflect liquidity, volatility, client behaviour, hedging cost and the broker's balance sheet. A major FX pair, a thin CFD and a crypto instrument should not share the same risk threshold.
Can technology replace dealer judgement in exposure management?
No. Technology can calculate exposure, alert the desk and route hedges faster, but the broker still needs clear policy, authority levels and accountability for decisions.