Trend following is an investment strategy that attempts to capitalize on the continuation of existing trends in financial markets. The core philosophy is to identify the direction of market movements and enter positions that align with that direction, maintaining the position until the trend reverses or dissipates. Trend followers do not attempt to predict future market prices but rather react to observed price movements, often employing a systematic and disciplined approach.
Principles
The fundamental principles underpinning trend following strategies include:
- Markets Trend: The belief that financial markets exhibit persistent price movements (trends) over various timeframes, driven by supply and demand imbalances, human psychology, or fundamental shifts. These trends can be upwards (bull markets) or downwards (bear markets).
- No Prediction, Just Reaction: Trend followers avoid forecasting market direction. Instead, they wait for a trend to establish itself and then follow it, adapting to the market's current direction.
- Risk Management: Robust risk management is central, typically involving predetermined stop-loss orders to limit potential losses on any single trade and position sizing rules (e.g., volatility-adjusted position sizing) to control overall portfolio risk.
- Diversification: Successful trend following strategies often involve trading a broad array of uncorrelated markets (e.g., commodities, currencies, equities, bonds, interest rates) to smooth out returns and reduce dependence on any single market.
- Long-Term Horizon: While trade entry and exit signals can be generated on various timeframes, the strategy is generally aimed at capturing intermediate to long-term trends, typically holding positions for weeks, months, or even longer.
Mechanisms and Implementation
Trend following strategies typically rely on technical analysis to identify and confirm trends. Common indicators and methods used for signal generation include:
- Moving Averages: Crossovers of short-term and long-term moving averages (e.g., 50-day and 200-day simple or exponential moving averages) are frequently used to signal trend initiation or reversal.
- Price Channels: Breakouts above historical highs (for an upward trend) or below historical lows (for a downward trend) within a defined lookback period (e.g., Donchian Channels or Keltner Channels) can signal new trends.
- Momentum Indicators: Tools like the Relative Strength Index (RSI) or Moving Average Convergence Divergence (MACD) can confirm the strength and direction of a trend, though they are often used as secondary confirmation rather than primary entry signals.
Once a trend is identified, a position is opened in the direction of the trend (e.g., buying in an uptrend, selling short in a downtrend). The position is held as long as the trend persists, and exit rules are applied when the trend shows signs of weakening or reversal. This often involves using trailing stops that adjust as the market moves favorably, locking in profits while still allowing participation in further trend extension.
Characteristics
- Systematic and Quantitative: Many trend following systems are fully automated or strictly rule-based, which helps to reduce emotional bias in trading decisions and ensures consistency.
- Non-correlated Returns: Historically, trend following has often exhibited low correlation with traditional asset classes like equities and bonds, especially during periods of market stress (e.g., bear markets). This makes it attractive for portfolio diversification, potentially improving risk-adjusted returns of a broader portfolio.
- "Long Volatility" Profile: Trend followers often profit most during periods of sustained market moves and increased volatility, whether up or down. They tend to perform poorly in choppy, range-bound, or sideways markets, where they may experience multiple small losses (known as whipsaws).
- Asymmetric Payoff: The strategy aims for a few large wins that compensate for many small losses. This can lead to periods of drawdowns punctuated by sharp, profitable rallies.
Performance and Criticism
Trend following strategies can generate significant returns during strong, persistent bull or bear markets. However, their performance can be challenged by:
- Whipsaws: In non-trending markets, frequent trend signals can lead to numerous losing trades as the market oscillates, making it difficult for the strategy to gain traction.
- Lagging Nature: By definition, trend followers enter a trend after it has begun and exit after it has started to reverse, meaning they do not capture the absolute beginning or end of a market move.
- Drawdowns: Periods without clear trends can lead to sustained periods of capital erosion, as the strategy incurs small losses while waiting for a new trend to emerge.
- Transaction Costs: Depending on the frequency of trading and the markets involved, substantial transaction costs (commissions, slippage, bid-ask spreads) can accumulate and impact overall profitability.
Despite these challenges, managed futures funds and Commodity Trading Advisors (CTAs), which often employ trend following as a core strategy, have become a recognized asset class, particularly valued for their diversification benefits and potential to perform during adverse equity market conditions.
Related Concepts
- Managed Futures: An investment vehicle, typically a fund or partnership, whose investment decisions are managed by professional money managers (CTAs) who often employ systematic strategies including trend following.
- Commodity Trading Advisor (CTA): A person or firm that, for compensation or profit, advises others as to the advisability of buying or selling futures contracts, options on futures, or swaps. Many CTAs specialize in systematic trend following.
- Technical Analysis: A discipline that studies historical market data, primarily price and volume, to identify patterns and predict future price movements. Trend following is a specific application of technical analysis.
- Momentum Investing: A strategy that invests in assets that have performed well recently, assuming that past performance indicates future performance. While related, trend following is more focused on the direction and persistence of price movement rather than just recent performance, often with defined entry/exit rules based on trend strength.
- Systematic Trading: A trading approach where decisions are made based on predefined rules and algorithms, often automated, characteristic of modern trend following.