Forex risk
Family I · Instruments
Not to be confused with correlation risk, gap risk, overnight risk.
Forex risk is the exposure to adverse outcomes arising from trading or holding positions in foreign exchange markets. It encompasses market risk from exchange rate fluctuations, credit risk from counterparties, and operational risks specific to the over-the-counter nature of currency trading. Unlike exchange-traded instruments, forex positions carry no central clearing guarantee, so risk management depends on the broker or counterparty.
Components of Forex Risk
Forex risk is not a single measure but a combination of exposures:
- Market risk – losses from unfavourable exchange rate moves, amplified by leverage.
- Liquidity risk – inability to close a position at a fair price, common in exotic pairs or during news events.
- Counterparty risk – the broker or liquidity provider defaults before settlement.
- Interest rate risk – changes in the differential between the two currencies affect rollover costs and forward pricing.
- Country risk – capital controls, pegs, or political events that disrupt convertibility.
These components interact; for example, a sudden devaluation can trigger both market and liquidity risk simultaneously.
Worked Example: Leveraged Position Risk
A trader buys 100,000 EUR/USD at 1.1000 with 1% margin (leverage 100:1). The position size is $110,000, and the margin requirement is $1,100. If the exchange rate falls to 1.0900, the loss is 100 pips, or $1,000. This represents a 90.9% loss on the margin deposited.
Margin requirements and leverage limits vary by jurisdiction and broker; retail leverage caps differ across regulators.
Managing Forex Risk
Common risk controls include stop-loss orders, position sizing based on account equity, and diversification across currency pairs. Because forex is traded over-the-counter, counterparty risk is managed by choosing regulated brokers and, in some cases, using central clearing for certain products. Interest rate differentials also affect holding costs, so carry trades introduce additional risk when rate expectations shift.
Often confused with
- correlation risk
- Correlation risk is the danger that supposedly independent positions move together, reducing diversification; in forex it appears when pairs share a common currency, whereas forex risk is the broader exposure to any adverse currency move. The visible sign is that correlation risk is measured by a correlation coefficient, not by a price change.
- gap risk
- Gap risk is the specific danger that prices jump between trading sessions or after news, leaving stop-loss orders unfilled at the intended level; forex risk includes gap risk but also covers ongoing market, credit, and liquidity exposures. The visible sign is a blank area on a price chart where no trades occurred.
- overnight risk
- Overnight risk is the exposure to price changes while a position is held after the trading day ends, often due to news or lower liquidity; forex risk is the overall potential for loss at any time, not only overnight. The visible sign is that overnight risk is tied to the rollover time and swap charges, not to intraday volatility.