Hedging Strategies for Forex EAs

Hedging reduces risk by taking offsetting positions. Here's how to implement it in automated systems.

Types of Forex Hedging

1. Direct Hedging

Open opposite position on same pair:

• Long 1 lot EUR/USD
• Short 1 lot EUR/USD
• Net exposure: Zero

2. Correlation Hedging

Use correlated pairs:

• Long EUR/USD
• Long USD/CHF (negatively correlated)
• Partially offset USD exposure

3. Cross-Currency Hedging

Use triangular relationships:

• Long EUR/USD
• Long USD/JPY
• Net: Long EUR/JPY indirectly

Direct Hedging Implementation

Basic Hedge Module:

class CDirectHedge {
private:
    bool m_hedge_active;
    ulong m_main_position;
    ulong m_hedge_position;
    
public:
    bool CreateHedge(ulong main_ticket) {
        if(!PositionSelectByTicket(main_ticket)) return false;
        
        string symbol = PositionGetString(POSITION_SYMBOL);
        double volume = PositionGetDouble(POSITION_VOLUME);
        ENUM_POSITION_TYPE type = (ENUM_POSITION_TYPE)PositionGetInteger(POSITION_TYPE);
        
        // Open opposite position
        MqlTradeRequest request = {};
        MqlTradeResult result = {};
        
        request.action = TRADE_ACTION_DEAL;
        request.symbol = symbol;
        request.volume = volume;
        request.type = type == POSITION_TYPE_BUY ? ORDER_TYPE_SELL : ORDER_TYPE_BUY;
        request.price = type == POSITION_TYPE_BUY ? 
            SymbolInfoDouble(symbol, SYMBOL_BID) : 
            SymbolInfoDouble(symbol, SYMBOL_ASK);
        request.magic = 999;  // Hedge magic number
        request.comment = "Hedge_" + IntegerToString(main_ticket);
        
        if(OrderSend(request, result)) {
            m_main_position = main_ticket;
            m_hedge_position = result.order;
            m_hedge_active = true;
            return true;
        }
        
        return false;
    }
    
    void RemoveHedge() {
        if(!m_hedge_active) return;
        
        // Close hedge position
        ClosePosition(m_hedge_position);
        m_hedge_active = false;
    }
    
    double GetNetExposure() {
        if(!m_hedge_active) {
            if(PositionSelectByTicket(m_main_position)) {
                return PositionGetDouble(POSITION_VOLUME);
            }
            return 0;
        }
        return 0;  // Fully hedged
    }
};

When to Hedge:

class CSmartHedge {
private:
    double m_hedge_threshold;     // Profit to protect
    double m_hedge_dd_trigger;    // Drawdown to trigger hedge
    CDirectHedge m_hedger;
    
public:
    void CheckHedgeConditions(ulong ticket) {
        if(!PositionSelectByTicket(ticket)) return;
        
        double profit = PositionGetDouble(POSITION_PROFIT);
        double entry = PositionGetDouble(POSITION_PRICE_OPEN);
        double current = PositionGetDouble(POSITION_PRICE_CURRENT);
        double volume = PositionGetDouble(POSITION_VOLUME);
        
        // Calculate unrealized pips
        double pips = MathAbs(current - entry) / _Point / 10;
        
        // Hedge if in significant profit before major news
        if(profit > m_hedge_threshold && IsHighImpactNewsComing()) {
            Print("Hedging to protect profit before news");
            m_hedger.CreateHedge(ticket);
        }
        
        // Hedge if drawdown exceeds trigger
        if(profit < 0 && MathAbs(profit) > m_hedge_dd_trigger * AccountInfoDouble(ACCOUNT_EQUITY)) {
            Print("Hedging to limit losses");
            m_hedger.CreateHedge(ticket);
        }
    }
    
    void OnNewsComplete() {
        // Remove hedge after news volatility settles
        if(m_hedger.GetNetExposure() == 0) {
            Sleep(300000);  // Wait 5 minutes
            m_hedger.RemoveHedge();
        }
    }
};

Correlation Hedging

Correlation-Based Hedger:

class CCorrelationHedge {
private:
    struct PairCorrelation {
        string pair;
        double correlation;  // -1 to +1
    };
    
    PairCorrelation m_correlations[];
    
public:
    void InitializeCorrelations() {
        // Pre-calculated typical correlations
        AddCorrelation("EURUSD", "USDCHF", -0.95);
        AddCorrelation("EURUSD", "GBPUSD", 0.85);
        AddCorrelation("AUDUSD", "NZDUSD", 0.90);
        AddCorrelation("EURUSD", "USDJPY", -0.30);
    }
    
    string GetBestHedgePair(string main_pair, bool want_negative) {
        double best_corr = 0;
        string best_pair = "";
        
        for(int i = 0; i < ArraySize(m_correlations); i++) {
            if(m_correlations[i].pair == main_pair) continue;
            
            double corr = m_correlations[i].correlation;
            
            if(want_negative && corr < best_corr) {
                best_corr = corr;
                best_pair = m_correlations[i].pair;
            }
            if(!want_negative && corr > best_corr) {
                best_corr = corr;
                best_pair = m_correlations[i].pair;
            }
        }
        
        return best_pair;
    }
    
    double CalculateHedgeLots(string main_pair, double main_lots,
                              string hedge_pair, double correlation) {
        // Adjust lots based on:
        // 1. Correlation strength
        // 2. Pip value differences
        
        double main_pip_value = GetPipValue(main_pair);
        double hedge_pip_value = GetPipValue(hedge_pair);
        
        double base_lots = main_lots * MathAbs(correlation);
        double adjusted_lots = base_lots * (main_pip_value / hedge_pip_value);
        
        return NormalizeLots(hedge_pair, adjusted_lots);
    }
};

Dynamic Correlation Monitoring:

double CalculateRollingCorrelation(string pair1, string pair2, int period) {
    double returns1[], returns2[];
    ArrayResize(returns1, period);
    ArrayResize(returns2, period);
    
    // Get price data
    MqlRates rates1[], rates2[];
    CopyRates(pair1, PERIOD_H1, 0, period + 1, rates1);
    CopyRates(pair2, PERIOD_H1, 0, period + 1, rates2);
    
    // Calculate returns
    for(int i = 0; i < period; i++) {
        returns1[i] = (rates1[i+1].close - rates1[i].close) / rates1[i].close;
        returns2[i] = (rates2[i+1].close - rates2[i].close) / rates2[i].close;
    }
    
    // Calculate correlation
    double mean1 = ArrayAverage(returns1);
    double mean2 = ArrayAverage(returns2);
    
    double sum_xy = 0, sum_x2 = 0, sum_y2 = 0;
    
    for(int i = 0; i < period; i++) {
        double dx = returns1[i] - mean1;
        double dy = returns2[i] - mean2;
        sum_xy += dx * dy;
        sum_x2 += dx * dx;
        sum_y2 += dy * dy;
    }
    
    return sum_xy / MathSqrt(sum_x2 * sum_y2);
}

Partial Hedging

Protect Portion of Position:

class CPartialHedge {
public:
    void CreatePartialHedge(ulong ticket, double hedge_percent) {
        if(!PositionSelectByTicket(ticket)) return;
        
        double full_volume = PositionGetDouble(POSITION_VOLUME);
        double hedge_volume = full_volume * hedge_percent;
        
        // Open partial hedge
        // ... similar to direct hedge but with partial volume
    }
    
    void ScaleHedge(double new_percent) {
        // Adjust hedge size based on conditions
        // Increase hedge as profit grows
        // Decrease hedge as price moves favorably
    }
};

// Usage example: Trailing hedge
void OnTick() {
    double profit_pips = GetPositionProfitPips(main_ticket);
    
    if(profit_pips > 50 && profit_pips <= 100) {
        hedge.CreatePartialHedge(main_ticket, 0.25);  // 25% hedged
    }
    else if(profit_pips > 100 && profit_pips <= 150) {
        hedge.CreatePartialHedge(main_ticket, 0.50);  // 50% hedged
    }
    else if(profit_pips > 150) {
        hedge.CreatePartialHedge(main_ticket, 0.75);  // 75% hedged
    }
}

Hedge Exit Strategies

When to Remove Hedge:

1. News Complete: Remove after volatility settles
2. Trend Confirmation: When direction becomes clear
3. Time-Based: After specified holding period
4. Profit Target: When hedged position reaches target

void ManageHedgeExit() {
    // Exit conditions
    bool news_over = !IsHighImpactNewsComing() && GetMinutesSinceNews() > 30;
    bool trend_clear = GetTrendStrength() > 0.7;
    bool time_elapsed = GetHedgeHoldTime() > 4 * 3600;  // 4 hours
    
    if(news_over || trend_clear || time_elapsed) {
        // Determine which leg to close
        double main_profit = GetPositionProfit(main_ticket);
        double hedge_profit = GetPositionProfit(hedge_ticket);
        
        if(trend_clear) {
            // Close losing leg, keep winner
            if(main_profit > hedge_profit) {
                ClosePosition(hedge_ticket);
            } else {
                ClosePosition(main_ticket);
            }
        } else {
            // Close both
            ClosePosition(main_ticket);
            ClosePosition(hedge_ticket);
        }
    }
}

Our Hedging Solutions

Viprasol develops sophisticated hedging systems:

• Multi-pair correlation hedging
• News event protection
• Dynamic hedge scaling
• Automated exit management

Need hedging in your EA? Contact us for implementation.