Direct Indexing

What Direct Indexing Actually Is

Direct indexing — sometimes called direct indexing in industry shorthand — means owning the constituent stocks of a market index individually, inside a separately managed account (SMA). A separately managed account is a portfolio held directly in the investor's name, not pooled with other investors the way a mutual fund or ETF is. The investor does not own shares of a fund; they own shares of Apple, Microsoft, and hundreds of other companies, with the account managed to approximate the index's behavior.

The strategy has existed for decades in institutional settings, but falling trading costs and advances in fractional-share technology have made it practical for individual taxable accounts at lower asset thresholds than were historically required. That said, it still generally requires a meaningful account size — commonly discussed in ranges starting somewhere in the low-to-mid seven figures — to replicate a broad index with enough fidelity to matter.

Why Taxable Investors at Scale Evaluate It

The central appeal is tax management that simply is not available inside a commingled fund. When you own an ETF, you own one security; if that security is up, there is no loss to harvest, even if thirty of its holdings have declined sharply. When you own those holdings individually, each position stands alone for tax purposes.

Tax-Loss Harvesting at the Position Level

Tax-loss harvesting is the practice of selling a security that has declined in value to realize a capital loss, then reinvesting the proceeds in something similar (but not "substantially identical," to avoid the wash-sale rule) to maintain market exposure. In a direct indexing account, the manager can scan hundreds of individual positions and harvest losses at the stock level even in a year when the index finishes positive — because some individual names will always be down.

Those harvested losses can offset capital gains realized elsewhere: from selling a business, distributing from a concentrated position, or rebalancing other parts of the portfolio. The cost basis of the replacement shares is reset lower, so the tax is deferred, not eliminated — but deferral has real value, particularly for families whose capital gains would otherwise be taxed at high combined federal-and-state rates. A qualified CPA must evaluate how harvested losses interact with a particular family's overall tax picture.

Customization and Exclusions

Because the investor owns individual shares, they can instruct the manager to exclude specific companies, industries, or sectors. Families sometimes consider this for several reasons:

• Values alignment. A family may wish to exclude certain industries — firearms, tobacco, fossil fuels — or to reflect broader environmental, social, or governance preferences without abandoning index-like market exposure.
• Concentration management. An investor with a large existing position in a single stock (a founder, executive, or heir) may want the index account to exclude or underweight that stock, avoiding further concentration. This can be one piece of a broader concentrated stock position strategy.
• Regulatory or employment restrictions. An executive subject to trading restrictions in their employer's stock can instruct the manager to exclude that name entirely.

Customization is not free. Every exclusion causes the account to deviate from the index, which introduces tracking error — the degree to which the account's returns differ from the benchmark. More exclusions generally mean more tracking error, which means the portfolio's performance can diverge meaningfully from the index in either direction.

Transition Management

Families who are moving a large taxable portfolio from one structure to another sometimes find direct indexing useful as a transition tool. A manager can accept a transfer of existing appreciated securities, incorporate them into the direct index account, and manage around those positions — harvesting losses on other holdings while allowing the legacy positions to be sold gradually or donated. This is a nuanced application that requires close coordination between the investment manager and a tax adviser.

The Tracking-Error Tradeoff

A well-constructed direct index account that holds most of the index's constituents with roughly market-weight allocations will track the index closely. But every decision that diverges from the index — exclusions, tax-driven substitutions, minimum position sizes, and the wash-sale rule's requirement to hold substitute securities for at least thirty days — introduces some degree of tracking error.

Tracking error is not inherently bad; sometimes the account will outperform the index, sometimes it will underperform. But a family that wants index-like returns with certainty will be disappointed by a heavily customized account. The honest framing is a spectrum: a plain direct index with few customizations and a large number of holdings will closely approximate the index; a heavily screened, exclusion-heavy account with a smaller number of holdings is a partially active portfolio with index-like DNA.

Evaluating tracking error against the tax and customization benefits is one of the central analytical questions when considering this strategy. Families evaluating the tradeoff may find the discussion in Benchmarks and Performance Measurement and Risk Budgeting useful context.

Fee Context: Direct Indexing vs. ETFs

A plain ETF tracking a broad market index is among the least expensive investment vehicles available — fees are often measured in single-digit basis points (one basis point equals one one-hundredth of a percent). Direct indexing strategies carry higher fees, typically described as a percentage of assets under management, and sometimes with additional technology or platform costs layered on. The gap can be meaningful.

Whether the higher cost is justified depends on the tax alpha — the after-tax value added by harvesting — generated in a particular account. A family with few capital gains to offset, or one in a low-tax jurisdiction, may find the arithmetic does not favor the higher fee. A family with a steady stream of realized gains from business activities, private equity distributions, or real estate sales may find the calculus looks quite different. A CPA and investment adviser working together can model illustrative scenarios, though no model can guarantee future outcomes.

The Honest Limits: Harvesting Yield Decays Over Time

This is perhaps the most important caveat in the entire strategy, and it is sometimes underemphasized in marketing conversations.

Tax-loss harvesting works by realizing losses against a lower cost basis. In year one of a new account, many positions will fluctuate below their purchase price at some point during the year, creating ample harvesting opportunities. As years pass, positions that have been held accumulate gains. The universe of positions with harvestable losses shrinks. New losses may still emerge during market corrections, but the steady-state harvesting yield of a mature direct index account is typically much lower than it was in the first few years.

Some providers describe this phenomenon as "harvesting yield decay" or reference the concept of a portfolio "aging." Consider a hypothetical family — call them the Delacroix family — who funded a direct index account at a market peak. In the first year, a broad market correction gave the manager substantial harvesting opportunities across dozens of positions. Five years later, with markets having recovered and risen, most positions sat well above their tax basis, and the annual harvesting yield had declined substantially. The account still offered customization benefits and the possibility of opportunistic harvesting during future corrections, but the early-year tax windfall was not repeatable on the same scale.

Families should ask providers directly: what does historical harvesting yield look like across the account lifecycle, not just in year one? How does that compare with the ongoing fee? These are reasonable questions that any credible manager should be able to address with illustrative historical data.

Practical Considerations and Questions to Ask

Several additional factors are worth understanding before evaluating this strategy in depth:

Account Size and Index Replication

Replicating a broad index of hundreds or thousands of stocks requires a sufficiently large account to hold positions of meaningful size in each constituent. Smaller accounts may hold only a subset of the index, increasing tracking error. Managers typically describe minimum account sizes and the replication methodology they use at various account tiers.

Coordination Across the Portfolio

A direct index account does not exist in isolation. Losses harvested inside it should coordinate with gains realized elsewhere in the family's portfolio. The wash-sale rule applies across all accounts held by the same taxpayer — including a spouse's accounts in some circumstances — so harvesting activity in the direct index must be monitored alongside activity in other taxable accounts. This is a filing and compliance coordination issue that a CPA should manage actively. Families with complex multi-entity structures may find the discussion in K-1s and Complex Tax Reporting and Tax Coordination relevant.

Charitable Giving and Estate Planning

Owning individual stock positions creates flexibility for charitable giving: highly appreciated shares can be donated directly to a charity or donor-advised fund, avoiding capital gains tax on the appreciation. In an estate context, individual positions each carry their own lot-level holding period and basis, potentially allowing heirs to benefit from a step-up in basis at death — though the rules governing step-up are complex and subject to change. An estate attorney should evaluate how the account fits into a broader estate plan.

Questions to Ask Any Provider

• How many stocks does the account hold at different asset levels, and what is the expected tracking error?
• How is the wash-sale rule managed across this account and any other accounts I hold?
• What has historical harvesting yield looked like at five and ten years, not just year one?
• How do exclusions affect tracking error, and is there a limit to how many I can implement?
• What is the all-in fee, including any platform or technology costs?
• How are dividends, corporate actions, and index reconstitutions handled?

For broader context on how this strategy fits within a taxable portfolio, the discussions at Asset Location and Asset Allocation may be useful starting points. Families comparing direct indexing to other tax-efficient structures may also want to review Exchange Funds and Hedging and Collars as part of a holistic conversation with their advisory team.