Ivy Portfolio description

in

1. Background and Philosophy

The Mebane Faber Ivy Portfolio is a lazy portfolio created by Mebane Faber, a quantitative investor, author, and co-founder of Cambria Investment Management. Inspired by the Ivy League endowment model, Faber designed this portfolio to provide broad diversification across asset classes while maintaining simplicity. The philosophy emphasizes risk parity, where each asset class contributes equally to the portfolio’s risk and return profile. Faber advocates for a passive, long-term approach with periodic rebalancing to maintain target allocations.

2. Asset Allocation Analysis

The portfolio is evenly split into five asset classes, each with a 20% allocation:

  • VTI (Vanguard Total Stock Market ETF): Represents U.S. equities, providing exposure to large-, mid-, and small-cap stocks.
  • VEU (Vanguard FTSE All-World ex-US ETF): Covers international developed and emerging market equities.
  • VNQ (Vanguard Real Estate ETF): Offers exposure to U.S. real estate investment trusts (REITs).
  • BND (Vanguard Total Bond Market ETF): Provides U.S. bond market diversification, including government and corporate bonds.
  • GSG (iShares S&P GSCI Commodity-Indexed Trust): Tracks a broad commodities index, including energy, metals, and agriculture.

Diversification and Risk Level

The portfolio is highly diversified across stocks, bonds, real estate, and commodities, reducing reliance on any single asset class. The equal-weight structure aims to balance risk, though commodities (GSG) can be volatile. The inclusion of bonds (BND) and REITs (VNQ) provides income and inflation hedging.

Pros and Cons

  • Pros: Simple to implement, low-cost (ETFs), broad diversification, and historically resilient during market downturns.
  • Cons: Commodities can underperform for extended periods, and international equities (VEU) may lag U.S. stocks.

3. Practical Application in Retirement Accounts

401(k) Implementation

To replicate this portfolio in a 401(k):

  1. Identify comparable funds: Look for index funds matching the asset classes (e.g., S&P 500 for VTI, global ex-U.S. for VEU).
  2. Substitute unavailable holdings: If GSG (commodities) is unavailable, allocate the 20% to stocks or REITs.
  3. Use broader categories: If exact matches aren’t available, use U.S. stocks for VTI, international stocks for VEU, and bond funds for BND.

IRA Implementation

In an IRA, investors can directly purchase the ETFs listed above for precise allocation. Rebalance annually to maintain the 20% per asset class target.

Note: Always review 401(k) fund expense ratios and performance history before selecting substitutes.