REIT Index Funds

A Real Estate Investment Trust (REIT) is a corporate structure that owns and operates income-producing real estate. REITs are required to distribute at least 90% of taxable income to shareholders, which means they pay no corporate income tax but distribute their income as taxable distributions to investors. A REIT index fund holds many REITs in proportion to their market capitalization, providing diversified real estate exposure with stock-like liquidity.

REITs are an asset class that gets either too much or too little attention in index portfolios. This page is about what they actually do, when they help, and where they should sit.

What a REIT index fund owns

A typical US REIT index fund holds a few hundred companies across major real-estate categories:

| Category | Typical % | Examples |

|----------|-----------|----------|

| Telecommunications (cell towers, data centers) | 25–30% | American Tower, Crown Castle, Equinix |

| Industrial / logistics | 15–20% | Prologis |

| Residential (apartments, single-family rentals) | 10–15% | AvalonBay, Mid-America Apartment |

| Healthcare (medical offices, senior living) | 10–15% | Welltower, Ventas |

| Retail (malls, strip centers, single-tenant) | 8–12% | Realty Income, Simon Property |

| Office | 5–10% | Boston Properties, Vornado |

| Self-storage | 4–7% | Public Storage, Extra Space |

| Specialty (hotels, casinos, timber, etc.) | 5–10% | Various |

The composition has shifted over the last decade. Cell towers and data centers (technology-adjacent infrastructure) have grown to be the largest category — most "REIT" exposure is now infrastructure-flavored, not the traditional commercial-real-estate exposure many investors imagine.

How REITs perform

REITs as an asset class have produced returns broadly comparable to the broader stock market over multi-decade periods, with somewhat different risk characteristics:

- **Returns**: long-run real returns of ~6–7%, similar to broad equity

- **Volatility**: somewhat higher than US large-cap; lower than emerging markets

- **Correlation with stocks**: moderate (~0.6–0.7) — diversifying but not unrelated

- **Correlation with bonds**: low to moderate

- **Yield**: high relative to broader equity (often 3–5% dividend yield)

REITs are interest-rate sensitive — they typically fall when rates rise sharply and rally when rates fall. This is part of what makes them somewhat distinct from broader equity.

The case for REIT exposure

1. Already in your total-market fund

A typical total-stock-market index fund holds REITs at their market-cap weight (~3–5% of total). If you hold VTI or similar, you already have some REIT exposure — you do not need to add a separate fund unless you want to overweight.

2. Diversification beyond cap-weight

REITs have somewhat different drivers than the rest of the stock market — interest rates, real estate cycle, occupancy trends. Holding them at slightly above market-cap weight (5–10% of equity instead of 3–5%) provides modest additional diversification.

3. Inflation protection

Real estate generally tracks inflation in moderate environments. Rents adjust with general price levels; property values do too. REIT exposure is one of the modest inflation hedges available in liquid form.

4. Income generation

For investors specifically wanting current income (retirees, income-focused portfolios), REITs produce more dividend income than broader equity at similar valuations.

The case against dedicated REIT allocation

1. Already in your total-market fund

Same argument the other way: if total-market funds already include REITs at market weight, you do not necessarily need more.

2. Tax inefficiency

REIT distributions are taxed as ordinary income, not as qualified dividends. This makes them less tax-efficient in taxable accounts than typical stock holdings. The location matters substantially — REITs in tax-deferred accounts work well; REITs in taxable accounts have a permanent tax drag.

3. Concentration in interest-rate-sensitive securities

Adding REITs makes the portfolio more interest-rate sensitive. In rising-rate environments (like 2022), REITs underperformed broader equity substantially.

Where to hold REITs

Asset location matters more for REITs than for most other holdings:

| Account type | REIT placement |

|--------------|----------------|

| **Tax-deferred (401(k), traditional IRA)** | Excellent — distributions sheltered |

| **Roth IRA** | Excellent — growth and distributions tax-free |

| **HSA** | Excellent — same as Roth |

| **Taxable brokerage** | Tax-inefficient; consider whether the additional exposure is worth it |

For investors with multiple account types, REIT exposure should be concentrated in tax-deferred or Roth accounts. The tax savings can be 0.5–1.0% per year, which compounds substantially over decades.

Sizing REIT allocation

Common approaches:

Just the market-cap weight (3–5% of total equity)

You get this automatically by holding a total-market index fund. No separate REIT fund needed. This is the simplest approach and the right answer for most investors.

Slight overweight (5–10% of equity in dedicated REIT fund)

Common in three-fund or four-fund portfolios that explicitly carve out a REIT allocation. The argument: modest additional diversification and inflation exposure.

Significant overweight (15–25%+ of equity)

Common among investors with strong real-estate-as-asset-class views. The diversification benefit diminishes at this size; you are mostly betting on real estate doing well.

For most investors, market-cap weight (no dedicated fund) or modest overweight (5–10%) is the right answer.

Specific products

| Fund | Type | Expense ratio |

|------|------|---------------|

| VNQ | ETF | 0.13% |

| SCHH | ETF | 0.07% |

| VGSLX | Mutual fund | 0.13% |

| FREL | ETF | 0.08% |

| VNQI | ETF (international REITs) | 0.12% |

VNQ is the largest and most established. SCHH is slightly cheaper and tracks a similar index. International REIT exposure (VNQI) provides diversification beyond US real estate but is rarely necessary as a separate holding for most investors.

Common failure patterns

- **Holding REITs in taxable accounts when you have tax-deferred space.** The tax inefficiency is significant.

- **Treating REITs as "safer" because they include "real" assets.** Listed REITs trade as stocks; their volatility is similar to other equities.

- **Ignoring REITs entirely on the assumption you already have real estate exposure through your home.** Your home is one property in one market. REIT funds hold hundreds of properties across types and regions. Different exposures.

- **Adding REITs while also holding a total-market fund without considering the overlap.** Total-market already includes REITs; an explicit REIT fund overweights, which is fine if intentional.

- **Concentrating in mortgage REITs (mREITs).** A specific REIT subcategory with very different risk characteristics — leveraged plays on interest-rate spreads. Not what broad REIT exposure means; usually best avoided.