Constructing a Long-Term Investment Portfolio

Asset Allocation Frameworks
  • Traditional 60/40 Portfolio: 60% equities, 40% bonds. Historically delivered ~7–9% annual returns with moderate volatility.
  • Risk Parity: Allocates based on risk contribution (e.g., Bridgewater’s All Weather Fund). Favors bonds during equity downturns.
  • Factor-Based Investing: Targets factors like value, momentum, or low volatility (e.g., iShares Edge MSCI USA Value Factor ETF).
Diversification Strategies
  • Geographic Diversification:
    • Developed markets (U.S., Europe) vs. emerging markets (India, Brazil).
    • Example: Adding MSCI Emerging Markets ETF (EEM) reduces reliance on U.S. growth.
  • Sector Rotation: Adjusting exposure to cyclical (tech) vs. defensive (utilities) sectors based on economic cycles.
  • Multi-Asset Diversification: Combining stocks, bonds, real estate, and commodities to minimize correlation.
Lifecycle Investing
  • Age-Based Adjustments:
    • 20s–30s: Aggressive allocation (80–90% equities).
    • 40s–50s: Gradual shift to bonds (60/40).
    • 60+: Conservative mix (40% equities, 50% bonds, 10% cash).
  • Target-Date Funds: Automatically rebalance toward bonds as retirement nears (e.g., Vanguard Target Retirement 2050 Fund).
Example Portfolio Breakdowns
  • Conservative (30% equities, 60% bonds, 10% cash):
    • Equities: Dividend stocks (Procter & Gamble) + S&P 500 ETF.
    • Bonds: Treasury notes + AAA corporate bonds.
  • Aggressive (90% equities, 10% alternatives):
    • Equities: Growth stocks (Amazon) + emerging markets ETF.
    • Alternatives: Bitcoin (5%) + REITs (5%).

Case Study: Yale University’s endowment, under David Swensen, achieved 10% annual returns (1985–2020) via heavy alternatives (private equity, real assets).

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