Portfolio Construction: Trend Following with Systematic Risk Management

Strategy Overview

Trend following portfolio construction systematically identifies and exploits price trends across a broad universe of liquid markets. This strategy does not predict market direction. It reacts to existing trends. It holds long positions in upward-trending markets and short positions in downward-trending markets. Diversification across many uncorrelated markets is key. Systematic rules govern entry, exit, and position sizing. This approach aims for asymmetric returns, capturing large trends while cutting losses short.

Market Selection

Diversified Universe

Trade a highly diversified universe of 50-100 liquid futures markets. Include commodities (e.g., Crude Oil, Gold, Corn), currencies (e.g., EUR/USD, GBP/JPY), fixed income (e.g., 10-Year US Treasury Futures, Eurodollar), and equities (e.g., S&P 500 Futures, DAX Futures). This broad diversification ensures that if one market or sector experiences a flat period, other markets might trend. Avoid concentrating risk in a few correlated markets. Ensure sufficient liquidity for all chosen markets to handle position sizing and execution.

Trend Identification and Entry Rules

Trend Indicator

Use a robust, long-term trend indicator. A common choice is a 200-day exponential moving average (EMA). Alternatively, use a 100-day channel breakout. For EMA-based entry: go long when the closing price crosses above the 200-day EMA. Go short when the closing price crosses below the 200-day EMA. For channel breakout: go long when the price closes above the highest high of the last 100 trading days. Go short when the price closes below the lowest low of the last 100 trading days. These are systematic, non-discretionary rules.

Entry Filters

Add filters to avoid whipsaws. Require the price to stay above/below the EMA for 3 consecutive days for confirmation. Or, require the 20-day EMA to be above the 50-day EMA for long entries. This reduces false signals. Do not enter trades against a strong prevailing longer-term trend. For instance, do not take a short signal if the 500-day EMA is still rising steeply.

Exit Rules

Trailing Stop Loss

Implement a volatility-based trailing stop loss. Use Average True Range (ATR) to set stops. For long positions, place an initial stop 2-3 ATRs below the entry price. Trail the stop up as the price moves higher. For short positions, place an initial stop 2-3 ATRs above the entry price. Trail the stop down as the price moves lower. For example, if the 20-day ATR is $1.00, a 2-ATR stop is $2.00 away from the current price. This allows trades to run while protecting capital. Re-evaluate stops daily.

Time-Based Exit

If a trend does not develop within a specified period (e.g., 60 days), exit the position. This frees up capital for better opportunities. This prevents capital from being tied up in dead money trades. This is particularly useful for markets entering consolidation phases.

Opposite Signal Exit

Exit a long position when a short signal is generated. Exit a short position when a long signal is generated. This ensures the portfolio always aligns with the current trend direction. This is a common exit for continuous trend following systems.

Position Sizing and Risk Management

Volatility-Adjusted Sizing

Size positions based on market volatility. Use the 'fixed fractional' method, often called 'percent of equity' or 'risk per trade'. Determine a fixed percentage of portfolio equity to risk per trade (e.g., 0.5% - 1.0%). Calculate the number of contracts based on this risk percentage and the stop-loss distance. For example, if your portfolio is $1,000,000 and you risk 1% ($10,000) per trade, and your stop is $500 per contract, you can trade 20 contracts. This ensures larger positions in less volatile markets and smaller positions in more volatile markets. It equalizes the dollar risk per trade across all markets.

Portfolio-Level Risk

Limit the total portfolio exposure to a maximum of 10-15% of capital at risk across all open positions. This means the sum of all individual trade risks should not exceed this threshold. Implement a portfolio-level circuit breaker: if the portfolio drawdown exceeds 20%, halve all open positions. If the drawdown reaches 30%, stop trading and reassess the strategy. This protects against systemic market events or prolonged periods of poor performance. Avoid over-leveraging. Ensure sufficient free margin to cover potential adverse moves.

Diversification Benefit

The true power of trend following comes from diversification. Due to low correlation between markets, losses in one market often get offset by gains in another. The larger the number of uncorrelated markets, the smoother the equity curve. This reduces overall portfolio volatility. Focus on adding more uncorrelated markets rather than increasing position size in existing ones.

Practical Application

An experienced trader might deploy a trend-following system across 75 futures markets. They risk 0.75% of their $5,000,000 portfolio on each trade, equating to $37,500 per trade. For Crude Oil futures, with an ATR of $2.00 per barrel and a 3-ATR stop, the risk per contract is $6.00 (x 1000 barrels/contract = $6,000). This allows for 6 contracts ($37,500 / $6,000 ≈ 6.25, rounded down). For a less volatile market like 10-Year US Treasury futures, with an ATR of $0.50 per contract and a 3-ATR stop, the risk per contract is $1.50 (x $1000/point = $1500). This allows for 25 contracts ($37,500 / $1500 = 25). This ensures that each market contributes roughly the same amount of dollar risk to the portfolio. This trader monitors open positions daily, adjusting trailing stops. They exit trades when a reverse signal appears or the stop is hit. They rebalance their market universe annually, adding new liquid markets and removing illiquid ones. This systematic approach removes emotional decision-making. It focuses on disciplined execution of a proven strategy.