Strategic Asset Allocation
Structure resilient multi-asset investment portfolios balancing equities, fixed income, cash, and real assets based on investor risk tolerance.
TL;DR
- Structure target asset mixes according to
time-horizonand risk. - Combine non-correlated assets to maximize overall
risk-adjustedreturns. - Maintain equity weightings for growth and
fixed-incomefor defense.
Primary Asset Classes Overview
Domestic EquitiesCore economic growth engine delivering long-term capital expansion.
Set domestic equities to portfolio times 0.60.International EquitiesGeographic diversification across developed and emerging nations.
Set international equities to portfolio times 0.20.Fixed Income BondsDefensive ballast dampening stock drawdowns and providing income.
Set fixed income bonds to portfolio times 0.20.Modern Portfolio Theory Concepts
Correlation CoefficientStatistical measure of how two assets co-move (-1.0 to +1.0).
Statistical measure of how two assets co-move (-1.0 to +1.0).Efficient FrontierOptimal portfolio weights offering max return for given risk.
Optimal portfolio weights offering max return for given risk.Idiosyncratic Risk EliminationCompany-specific risk eliminated by holding broad index funds.
Set idiosyncratic risk elimination to 0.Classic Allocation Frameworks
Classic 60/40 PortfolioTraditional balanced benchmark of 60% equities and 40% bonds.
Traditional balanced benchmark of 60% equities and 40% bonds.Three-Fund PortfolioBogleheads standard: Total US Stock, Total Intl Stock, Total Bond.
Bogleheads standard: Total US Stock, Total Intl Stock, Total Bond.Aggressive 80/20 MixGrowth allocation for long-horizon investors with high tolerance.
Growth allocation for long-horizon investors with high tolerance.Determining Personal Asset Mix
Time Horizon RuleLonger investment horizons tolerate greater equity drawdowns.
Longer investment horizons tolerate greater equity drawdowns.Risk CapacityObjective financial ability to endure temporary paper losses.
Check whether liquid cash is at least expenses times 6.Target Glide PathGradually increasing bond allocation as retirement approaches.
Gradually increasing bond allocation as retirement approaches.Tips
- Determine your asset allocation based on your emotional
risk-tolerancebefore committing large sums of capital. - Implement the simple
three-fundportfolio model using broad index funds to capture global market returns efficiently.
Warnings
- Do not abandon your strategic
asset-allocationduring severe market sell-offs to avoid locking in permanent paper losses. - Avoid holding zero
fixed-incomeif severe equity market volatility will cause you to panic sell during crashes.
In Practice
Calculate dollar distributions and blended expected return for an 80/20 portfolio.
An investor constructs an 80/20 portfolio with $100,000 across US stocks, international stocks, and aggregate core bonds.
- 1. Target 60% US equities, 20% international equities, and 20% core aggregate bonds.
- 2. Allocate US equities: $100,000 * 0.60 = $60,000 in total US stock market index.
- 3. Allocate international equities: $100,000 * 0.20 = $20,000 in ex-US market index.
- 4. Allocate core fixed income: $100,000 * 0.20 = $20,000 in total aggregate bond fund.
- 5. Compute blended expected return: (0.60 * 8.0%) + (0.20 * 7.0%) + (0.20 * 4.0%) = 7.0%.
Portfolio achieves 7.0% expected return with balanced global diversification.
Deliberate asset allocation drives long-term returns while moderating total portfolio drawdowns.
FAQ
The 110 minus age rule is a common rule-of-thumb heuristic for determining stock allocation. Subtracting your current age from 110 yields your target equity percentage (e.g., a 30-year-old allocates 80% to stocks and 20% to bonds).
International equities diversify portfolio returns away from exclusive dependence on a single domestic economy, providing exposure to different currency cycles, valuations, and sovereign demographic growth trends.
Empirical academic studies show that broad asset allocation decisions determine over 90% of the long-term variability in total portfolio returns, far outweighing individual security selection or market timing.