Objective
To illustrate how risk can accumulate across positions even when individual trades appear controlled.Setup
- Initial capital: $10,000
- Risk per trade: 1%
- Number of trades: 3
- Assets: EURUSD, GBPUSD, AUDUSD
Assumption
The trader assumes total risk is limited: → 3 trades × 1% = 3% total risk This assumes that each trade is independent.The Hidden Exposure
All three positions share a common factor: → USD strength This creates a dependency between trades.Scenario
The trader opens:- Long EURUSD
- Long GBPUSD
- Long AUDUSD
Market Event
A macro event occurs:- US interest rates increase
- USD strengthens across the board
Outcome
Each trade hits stop loss:- EURUSD → -1%
- GBPUSD → -1%
- AUDUSD → -1%
Interpretation
Although risk was controlled per trade:- exposure was not independent
- losses were perfectly correlated
- risk was concentrated
Structural Insight
Multiple trades can behave like a single position when driven by the same underlying factor.
Extension
Hidden risk also appears in:- correlated indices (S&P 500, NASDAQ, DAX)
- commodities linked to USD
- strategies based on similar signals
Key Insight
Risk is not defined by the number of trades.It is defined by the number of independent exposures.
Conclusion
A portfolio can appear diversified while being structurally concentrated. Ignoring correlation leads to:- larger-than-expected losses
- faster drawdowns
- reduced system stability
Final Insight
The relevant question is not:“How many trades do I have?”But:
“How many independent risks am I taking?”