Quick answer
Is an exchange fund or direct indexing better for a concentrated stock?
An exchange fund diversifies the whole position immediately and tax-deferred, but locks it up for about seven years. Direct indexing needs separate cash, then harvests losses that let you sell the concentrated stock gradually without net tax. Exchange funds suit large, very low-basis positions; direct indexing suits investors with fresh cash and a long runway.
Key takeaways
- 01Exchange fund: 100% of the contributed stock diversified on day one; ~7-year lock-up.
- 02Direct indexing: diversifies only as fast as it harvests losses, often single-digit percent of the position a year.
- 03Direct indexing needs new cash (or a taxable sale) to start; an exchange fund takes the stock itself.
- 04Many holders combine them, and add an income overlay on the shares still waiting to be sold.
| Starts with | Exchange fund: your stock · Direct indexing: cash |
|---|---|
| Speed | Exchange fund: immediate · Direct indexing: gradual |
| Lock-up | Exchange fund: ~7 years · Direct indexing: none |
| Customization | Exchange fund: none · Direct indexing: high |
| Typical fee (reported) | Exchange fund: ~0.40%–0.95% · Direct indexing: ~0.20%–0.40% |
The Short Answer
Which diversifies a concentrated stock faster?
An exchange fund wins on speed; direct indexing wins on flexibility. Contribute $2M of one stock to an exchange fund and, economically, you own a slice of a diversified pool that same day. Direct indexing cannot touch the stock directly. It buys an index of individual stocks with other money, sells the losers to harvest capital losses, and those losses let you sell some of your concentrated stock without a net tax bill.
Day 1
Exchange fund: whole contribution diversified
~9%
Direct indexing: share of a $2M position sold tax-free after 5 years (illustration below)
7 yrs
Exchange fund lock-up before you can take the basket
How Each Works
How do exchange funds and direct indexing work differently?
| Exchange fund | Direct indexing | |
|---|---|---|
| What you put in | Your appreciated stock | Cash (or proceeds of a taxable sale) |
| Tax mechanism | §721 contribution, gain deferred | Harvested losses offset gains you realize |
| Diversification speed | Immediate | Gradual, paced by losses |
| Lock-up | About 7 years | None |
| Customization | None: you own the pool | Exclude sectors, your employer, ESG screens |
| Investor test | Usually qualified purchaser; some accredited series | Usually none beyond account minimum |
| Income | Low (index-like dividends) | Low (index-like dividends) |
The key difference is the starting asset. A direct indexing account generates losses only on the money inside it. If all you own is the concentrated stock, you have to sell some of it, and pay tax, just to fund the direct indexing account.
The Math
How much of a $2M position can direct indexing diversify tax-free?
Take a $2M position with a $200K basis, so 90% of every dollar sold is gain. Pair it with a $1M direct indexing account. Research and provider data suggest harvests are front-loaded: large in the first years, then shrinking as the portfolio's basis drifts below market. We assume harvested losses of 6%, 4%, 3%, 2% and 1.5% of the starting $1M in years 1 to 5.
Chart
Share of a $2M, $200K-basis position diversified without net tax after 5 years
Calculator
How fast can harvested losses diversify you?
Estimate how much concentrated stock you can sell without net tax, using losses from a direct indexing account.
Stock you could sell with no net tax
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Share of position diversified
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Harvested losses
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Simplified: assumes all losses offset gains on the concentrated stock, a constant harvest rate and no price change. Real harvests are usually front-loaded and shrink over time.
Costs
Which costs more, an exchange fund or direct indexing?
Reported exchange fund fees run roughly 0.40% to 0.95% a year, plus placement fees at some sponsors and the drag or boost from the 20% illiquid sleeve. Direct indexing accounts commonly charge about 0.20% to 0.40%. But the fee is only charged on what is in each vehicle: an exchange fund charges on the stock you contribute, while direct indexing charges on the separate cash.
Watch the hidden cost: Harvested losses are real losses in a sub-portfolio. They lower that account's basis, so the tax saved now is partly paid back later when you sell those holdings, unless you hold them until death or give them away.
Where Embark fits
Both routes leave most of your stock in place for years. What does it pay you meanwhile?
Run your ticker to see what the shares still waiting to be diversified could target in income.
- Starts with the stock you own: no new cash and no taxable sale needed
- Same §721 in-kind contribution as an exchange fund: $0 tax at contribution
- Targets 10%+ annual income that can fund your direct indexing account
Run the numbers
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Fit
Who should choose each option?
Choose an exchange fund if…
Your basis is very low, the position is large, you can lock up for seven years, and you want broad diversification now.
Choose direct indexing if…
You have new cash to invest, want customization (for example, excluding your employer), and are happy to diversify gradually.
Combine them if…
You contribute part of the stock to an exchange fund and use direct indexing for new savings and bonus cash.
Add income if…
Either way, much of the stock stays put for years. An income overlay or §721 SPV can pay you while you wait.
Where Embark Fits
What about the shares that stay concentrated?
Both routes leave you holding the concentrated stock for years: in an exchange fund until the pool diversifies, and with direct indexing until losses catch up. Embark's SPV takes the same kind of §721 in-kind contribution with $0 tax at contribution, keeps your shares instead of pooling them, and targets 10%+ annual income from an options overlay, with a 3-year lock-up. That income can fund a direct indexing account, turning the two ideas into one plan.
FAQ
Frequently asked questions
Is direct indexing better than an exchange fund?
Neither is better in general. Direct indexing is cheaper and flexible but needs cash and diversifies slowly. An exchange fund diversifies a large low-basis position at once but costs more and locks you up for about seven years.
Can direct indexing offset gains from a concentrated stock?
Yes. Losses harvested in a direct indexing account are ordinary capital losses that can offset gains from selling the concentrated stock in the same year or later years.
How much tax loss harvesting can you expect from direct indexing?
It varies with market volatility and timing. Harvests tend to be largest in the first few years after funding and shrink as the portfolio's basis falls below its market value.
Do I need cash for direct indexing?
Yes. Direct indexing buys individual stocks, so it needs cash or the proceeds of a sale. An exchange fund takes your stock directly.
Can I exclude my employer's stock from a direct index?
Yes. Most direct indexing platforms let you exclude specific stocks or sectors, which matters if you already hold a lot of your employer's stock.
Can I use an exchange fund and direct indexing together?
Yes. A common pattern is contributing part of a low-basis position to an exchange fund and using direct indexing for new savings.
Do exchange funds harvest losses for me?
No. You own units in the pool, so losses on individual stocks inside it are not passed to you as harvestable losses the way they are in a direct indexing account.
Sources
Sources and further reading
Sources
Cite this article
Embark Funds Research. “Exchange Fund vs. Direct Indexing Which Diversifies You Faster?.” Embark Funds, updated October 15, 2026. https://www.embarkfunds.com/insights/exchange-fund-vs-direct-indexing
Not tax advice: Figures are illustrative and reported fee ranges vary by provider. Confirm terms with each provider and model your situation with a tax advisor.
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