Personalized Indexing: What It Is, and Whether It Belongs in Your Portfolio

If you've read about "direct indexing" or "personalized indexing" and wondered whether it's relevant to you, you're not alone. It's one of the fastest-growing ideas in portfolio construction, thanks to lower trading costs, the ability to buy fractional shares, and smarter software. But like most sophisticated tools, it's not automatically the right fit for everyone. Here's a plain-language look at what it is, what it can do, and the questions we ask before recommending it to an Anthea client.

What is personalized indexing?

Traditionally, if you wanted broad stock market exposure, you'd buy a mutual fund or an ETF — a single security that represents a basket of hundreds or thousands of companies. Personalized indexing takes a different approach: instead of owning shares of the fund, you directly own the individual stocks that make up an index, held in your own account.

That single difference — owning the underlying companies yourself, rather than shares of a pooled fund — is what unlocks everything else personalized indexing can do. It opens the door to a level of customization and tax planning that isn't possible inside a traditional fund.

In practice, we start with a familiar, broad market index as the foundation, then layer in whatever matters to you: excluding certain companies or industries, tilting toward your values, or fine-tuning for tax purposes.

The result is a portfolio of a few hundred individual stocks, built around a benchmark you'd recognize, but shaped around your priorities.

What can it actually do for you?

Harvest tax losses more effectively.

Because you own individual stocks rather than a fund, we can potentially sell specific positions that have dropped in value — even in a year when the market overall is up — to help offset gains elsewhere in your financial life and reduce your tax bill. This is the single biggest reason personalized indexing tends to make sense for higher-net-worth households: the more capital gains you generate elsewhere (from a business sale, real estate, or other investments), the more valuable this becomes.

Invest around your values.

If broad exclusions aren't specific enough for you — say, you want to avoid certain industries entirely, or you want your portfolio to favor companies that reflect particular environmental or governance practices — personalized indexing lets us build that directly into your holdings, rather than hoping an off-the-shelf fund happens to match your criteria.

Untangle a concentrated position.

Many of our clients arrive with a large position they can't or don't want to sell all at once — company stock from an executive compensation package, a legacy holding with decades of embedded gains, or shares they're simply restricted from selling. Personalized indexing lets us build the rest of your portfolio around that position and gradually transition you toward better diversification, using losses elsewhere in the portfolio to help offset the tax cost of unwinding it over time.

Emphasize specific investment characteristics.

For clients with a particular point of view — for instance, wanting more exposure to smaller companies or to certain risk characteristics — this approach can incorporate that tilt alongside the tax and values-based customization above. This is the most technical of the use cases, and one we walk through carefully together, since it adds real complexity to the portfolio.

What it costs you - in dollars and in complexity:

Nothing in life is free, and part of our job is being honest with you about the trade-offs:

It typically costs more than an index fund.

You're paying for customization, so expect a modest fee premium over a simple, off-the-shelf index fund — though generally less than an actively managed fund.

Your portfolio will drift somewhat from the index.

The more we customize — excluding companies, harvesting losses, tilting toward certain characteristics — the more your results can differ from the plain benchmark, in both directions. That's expected and, in most cases, exactly the point.

It's more to keep track of.

Owning a few hundred individual stocks means longer statements and more moving parts than a single fund position. We handle the day-to-day management, but it's worth understanding going in.

Is it right for you?

We generally find personalized indexing worth a serious look when a client fits one or more of these situations:

• You have specific values or exclusions that a pre-built fund simply can't match.

• You regularly realize meaningful capital gains elsewhere — from a business, real estate, or other investments — and would benefit from ongoing tax-loss harvesting.

• A significant share of your wealth sits in a taxable account, rather than retirement accounts.

• You're holding a large, concentrated, or restricted position that needs to be carefully transitioned over time.

And it's often not worth the added cost and complexity when your investable assets are modest, your accounts are mostly tax-advantaged (like IRAs or 401(k)s), or a standard low-cost index fund already meets your needs without the extra moving parts.

Let's figure it out together.

Personalized indexing is a powerful tool, but it's exactly that — a tool, not a strategy in itself. Whether it belongs in your portfolio depends entirely on your tax situation, your values, your existing holdings, and how much complexity you're comfortable with. That's a conversation, not a form.