Own an S&P 500 ETF? Do This Instead.

Index funds are one of the best inventions in the history of investing. Low cost, diversified, tax-efficient relative to active management, and almost impossible to beat over long periods. If you own a broad market index fund, you are doing something right.

But there is a version of index investing that is better. It does not pick better stocks and it does not time the market. It is better because it turns your market exposure into a tax engine, one that runs quietly year after year and produces returns that have nothing to do with how the market did.

It is called direct indexing, and above a certain portfolio size it is also one of the most overlooked things in investing.

See the full explainer: How Direct Indexing Works →

What an Index Fund Can’t Do

When you buy an S&P 500 ETF, you own one thing: a share of the fund. The fund owns the 500 stocks. You do not, and most investors never think about why that matters.

Because you own the fund and not the individual stocks, you cannot harvest losses at the individual security level. The fund handles that internally, in a way optimized for the fund rather than for your tax situation. When Apple drops 15% while the broader index is flat, that loss sits inside the fund where you cannot touch it or use it against a gain elsewhere in your portfolio. It evaporates.

What Direct Indexing Does

Direct indexing means owning the individual securities that make up an index – all 500 stocks, or a representative sample – rather than a fund that holds them for you. The market exposure is essentially identical. The tax treatment is completely different.

Because you own the individual stocks, you can harvest losses at the security level. When Apple drops 15% while the broader index is flat, that is a harvestable loss. You sell Apple, immediately buy a similar technology stock to maintain your exposure, and bank the loss. The index barely moved. Your loss bank just got bigger.

Individual stocks move independently of each other. On any given day – even in a rising market – some stocks in the index are down. Those are harvesting opportunities. A well-managed direct indexing strategy captures them continuously, building a loss bank that can be deployed against gains anywhere in your portfolio: a real estate sale, a business exit, an RSU vest, a concentrated stock position you need to reduce.

The Tax Math

The value of a direct indexing strategy scales with your tax rate and your portfolio size. For an investor with a significant capital gains rate and a portfolio large enough to own individual securities efficiently – typically $100K or more – the annual tax alpha generated by systematic loss harvesting can meaningfully exceed the cost of the strategy.

It also pairs with everything else. The losses harvested through direct indexing feed the same loss bank as tax loss harvesting on other positions. Box spread borrowing lets you access liquidity without triggering gains. Concentrated position management uses harvested losses to offset the tax cost of diversifying. Each strategy makes the others more powerful.

Who It’s For

Direct indexing makes the most sense for investors who have significant taxable accounts, face meaningful capital gains from other sources – real estate, business interests, equity compensation – or hold concentrated positions they need to reduce over time. The larger the potential tax bill, the more valuable the loss bank becomes.

If your portfolio is entirely in tax-advantaged accounts, direct indexing is less relevant, since there are no gains to offset. But for anyone with meaningful taxable exposure and a tax rate that makes gains painful, the harvesting pays for itself many times over.

Most advisors never offer it, and most never bother to implement it. That is the gap worth closing.