Direct Indexing

Direct indexing is a modern investment approach that lets you buy the individual stocks making up an index, rather than purchasing a traditional index fund or ETF. With an index fund, you own a single security that passively tracks a market benchmark, like the S&P 500. In contrast, direct indexing gives you direct ownership of each underlying stock in the index, typically managed through a brokerage or specialized platform that automates the process.

The key difference is control. Index funds pool all investors’ money and buy the index as a whole, so you can’t tweak the holdings. Direct indexing, however, allows you to customize your portfolio—excluding certain companies, tilting toward others, or integrating personal values—while still closely tracking the index’s performance.

You can measure how closely your direct indexing portfolio follows its target index using tracking error:

where $R_{p,i}$ is your portfolio’s return in period $i$, and $R_{b,i}$ is the benchmark’s return. Direct indexing also enables tax-loss harvesting—selling securities at a loss to offset gains. The more volatile the individual stocks, the more opportunities you may have for tax-loss harvesting, even when the overall index is flat or up.

Direct indexing becomes especially attractive in certain situations. If you have a large taxable account, direct indexing can help you manage taxes more efficiently by realizing losses on individual stocks. If you want to avoid specific companies or industries—due to personal values or to reduce concentrated exposure—you can customize your holdings, something not possible with a standard index fund. Direct indexing can also make sense if you already own some of the stocks in an index, letting you fill in the gaps without buying duplicates. However, it usually requires a higher account minimum and may involve higher trading costs or complexity, so it’s best suited for investors with larger portfolios and specific customization needs.