Tactical Asset Allocation (TAA) is an active management strategy that involves shifting the percentage of assets held in various categories to take advantage of market pricing anomalies or strong macroeconomic trends. For beginners, TAA offers a systematic way to reduce risk and potentially enhance returns without relying on gut feelings.
Strategic vs Tactical
Strategic Asset Allocation (SAA) involves setting target allocations (e.g., 60% stocks, 40% bonds) and periodically rebalancing back to those targets, regardless of market conditions. Tactical Asset Allocation (TAA), on the other hand, allows you to deviate from these targets temporarily based on quantitative signals like momentum, moving averages, or economic indicators.
The Role of Trend Following
Most beginner TAA strategies rely on trend following. A classic rule is the 10-month Simple Moving Average (SMA). If an asset's price is above its 10-month SMA, you hold it. If it falls below, you sell and move to cash or bonds. This simple rule famously protected investors during the 2008 financial crisis.
Getting Started
To start with TAA, you don't need to trade daily. Most robust TAA models (like the Ivy Portfolio or Dual Momentum) only require you to check your signals once a month. This low-frequency trading minimizes transaction costs, reduces tax drag, and prevents emotional over-trading.
"Dual momentum is the clean integration of relative strength momentum and trend following absolute momentum. They complement each other perfectly." — Gary Antonacci
The GEM Execution Rules
GEM is rebalanced exactly once per month. At the end of each month, the investor carries out the following steps:
- Calculate the trailing 12-month return of S&P 500 (representing US stocks) and MSCI ACWI ex-US (representing global stocks).
- Select the index with the higher return.
- Compare the return of this winning index to the trailing 12-month return of 1-3 Month Treasury Bills (cash proxy).
- If the winning equity return is greater than cash, invest 100% in that equity index. Otherwise, invest 100% in a broad U.S. Aggregate Bond index (like BND or AGG).
Why GEM Works
Historically, equities spend about 70-80% of the time in bull markets. Relative momentum keeps the investor aligned with the strongest equity markets (whether that's US tech stocks or international value plays). However, when severe bear markets emerge (such as the 2008 financial crisis or the 2000 dot-com crash), absolute momentum acts as a circuit breaker, moving the entire portfolio into high-quality bonds. This reduces drawdown risk and protects capital.
ETF Implementations
A typical retail investor can implement GEM using just three low-cost, liquid ETFs:
- US Stocks: Vanguard S&P 500 ETF (VOO) or SPDR S&P 500 ETF (SPY)
- International Stocks: Vanguard Total International Stock ETF (VXUS) or iShares Core MSCI ACWI ex U.S. ETF (ACWX)
- Aggregate Bonds: Vanguard Total Bond Market ETF (BND) or iShares Core U.S. Aggregate Bond ETF (AGG)
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