Owning the Index Share by Share to Harvest the Losers
A fund cannot pass individual security losses to its holders. Owning the underlying shares directly can, which lets an investor realise losses inside a portfolio whose overall value is rising.
What a Fund Cannot Do
An index fund holding five hundred companies experiences losses in individual holdings every year, even in a year when the index rises. A third of the constituents might be down.
Those losses stay inside the fund. A shareholder cannot realise them, because the shareholder owns fund shares whose value reflects the whole portfolio, and the fund itself cannot distribute losses to holders.
Direct indexing resolves this by having the investor own the individual securities in a separate account, managed to track an index. Each holding has its own cost basis, and losers can be sold to realise losses while the overall portfolio continues tracking.
How the Harvesting Works
The account is monitored for positions trading below their purchase price. Those are sold, realising a capital loss, and the proceeds are reinvested in a security with similar characteristics so that index tracking is maintained.
The replacement must be different enough to avoid the wash sale rule, which disallows a loss if a substantially identical security is purchased within thirty days before or after the sale. Managers substitute within a sector or use optimisation to hold a different combination with similar factor exposure.
The realised losses offset capital gains elsewhere in the investor tax position, and a limited amount can offset ordinary income annually, with the remainder carried forward.
| Index Fund | Direct Indexing | |
|---|---|---|
| Tracks the index | Yes | Yes, with tracking error |
| Individual security losses usable | No | Yes |
| Cost | Very low | Higher management fee |
| Complexity | Minimal | Hundreds of positions, ongoing trading |
| Customisation | None | Can exclude holdings |
The entire advantage is that a loss inside a fund is invisible and a loss inside your own account is a deduction. Everything else about direct indexing is the cost of getting access to that difference.
The Benefit Decays
The most important and least advertised feature is that harvesting opportunities diminish over time.
In the early years, many positions sit near their purchase price and market movement pushes a substantial share below it. As the portfolio appreciates, more holdings develop large embedded gains and fewer ever trade below cost.
An account that harvested substantial losses in its first three years may generate very little by year ten. Modelling that assumes a constant annual harvesting benefit overstates the value considerably.
The benefit also depends entirely on the investor having gains to offset. Realised losses with nothing to use them against are carried forward, which has value only if gains eventually arrive.
The Deferral, Not Elimination
A point that is frequently obscured in marketing: harvesting a loss reduces the cost basis of the portfolio, because the proceeds are reinvested in a replacement at a lower price.
That means a larger gain is realised later when the position is eventually sold. The benefit is deferral of tax rather than avoidance, and its value is the time value of the deferred payment plus any difference between the rate at which the loss was used and the rate at which the future gain is taxed.
Deferral is genuinely valuable, particularly over long horizons. It is not the same as never paying, and the exception is an investor who holds until death, where the basis steps up and the deferred gain disappears entirely, or who donates appreciated shares to charity.
Those two exit routes are what convert deferral into elimination, and they are why direct indexing suits investors with charitable intent or estate planning objectives far better than those who will eventually spend the money.
The Other Reason People Use It
Customisation is a separate benefit and increasingly the primary one for some investors.
An account holding individual securities can exclude specific companies or industries, which a fund cannot. That serves investors with values based restrictions, and more practically it serves investors with concentrated positions: an executive holding a large amount of employer stock can hold an index excluding that company and its close comparables, reducing overall concentration without selling.
It also permits gradual diversification of a legacy concentrated holding by directing harvested losses against gains realised on the concentrated position, which is a genuinely useful application.
The Costs and the Lock In
Direct indexing costs more than an index fund, both in management fee and in the trading and operational complexity of holding hundreds of positions.
It also creates a form of lock in that a fund does not. After years of harvesting, the account holds many positions with very low cost basis, and moving to a different provider or a different strategy means realising those gains. The tax benefit accumulated becomes a constraint on future flexibility.
The Bottom Line
Direct indexing exists because losses inside a fund are unusable and losses inside your own account are deductible, and it captures that difference at the cost of a higher fee and considerable complexity. The benefit is deferral rather than elimination, it decays as the portfolio appreciates, and it is worth most to investors who have gains to offset and who will exit through a step up in basis or charitable donation rather than by spending the money. For anyone else the arithmetic is considerably thinner than the marketing suggests.