Concentrated Stock Position: Tax Strategies for Tech Workers

A concentrated stock position is any holding in a single security that represents a disproportionately large share of your investable net worth — typically 10% or more, though for many FAANG employees the number runs far higher. Senior engineers at Google, Meta, Apple, Amazon, and Microsoft who have been accumulating RSU vests for five or more years often find that employer stock represents 40%, 60%, or even 80% of everything they own outside of their 401(k).

The problem is well understood: single-stock concentration creates catastrophic downside risk. Every FAANG stock — including the ones that have performed extraordinarily well over the past decade — has experienced drawdowns of 30%, 40%, or more. The question is not whether concentrated positions are risky; they are. The question is what it costs to reduce that risk, what mechanisms exist to reduce it, and how to think about the tradeoffs given your specific tax rates, position size, and financial goals.

This guide covers the full landscape — what concentration actually costs in tax terms, the seven primary strategies for managing it, and a framework for thinking about which approaches apply to your situation.

What Makes a Concentrated Position Expensive to Sell

The math is stark. A California-based engineer holds $4,000,000 in Google stock with a $400,000 cost basis — shares that vested years ago at much lower prices and were never sold. The embedded gain is $3,600,000. Selling the entire position at once triggers:

Federal long-term capital gains (20%): $720,000
Net Investment Income Tax (3.8%): $136,800
California state tax (13.3%): $478,800
Total tax: approximately $1,335,600

That leaves $2,664,400 to reinvest — roughly two-thirds of the original position. The tax alone exceeds many people's entire net worth.

A Washington-based Amazon engineer with the same position faces a different but still substantial bill:

Federal + NIIT (23.8%): $856,800
Washington state tax: 7% on first $722,000 above the $278,000 deduction = $50,540, plus 9.9% on remaining $2,878,000 = $284,922, total state = $335,462
Total tax: approximately $1,192,262

These numbers explain why so many FAANG employees hold concentrated positions far beyond what rational risk management would suggest. The tax bill feels like a floor that's too high to step off from. But it's a static comparison — it ignores the ongoing risk of holding, which is continuous and uncompensated.

The True Cost of Holding

The conventional analysis focuses only on the tax cost of selling. The cost of holding is less visible but equally real.

Single-stock risk is uncompensated. Modern portfolio theory is unambiguous on this point: investors are not compensated with higher expected returns for bearing company-specific risk. A diversified portfolio of 500 stocks has the same expected return as any individual stock within it — but dramatically lower variance. Holding $4,000,000 in a single stock is accepting a level of risk that a diversified portfolio doesn't require.

Employer dependency concentration. For most FAANG employees, the concentrated position is also the employer's stock. Your income, your health insurance, your career advancement, and your investment portfolio are all exposed to the same company's performance. This correlation compounds the concentration problem: the scenario in which your portfolio declines sharply is also the scenario in which your job, bonus, and future RSU grants may be at risk.

The asymmetry of large drawdowns. A stock that falls 50% requires a 100% gain to recover. A tech worker who held a $4,000,000 concentrated position through a 50% drawdown — not an unusual event in the industry — is now at $2,000,000. The after-tax proceeds from selling at $4,000,000 ($2,664,400 for a California resident) were more than the post-drawdown position value. The tax cost that seemed prohibitive was actually the cheaper outcome.

This is not an argument for always selling immediately. It is an argument for evaluating the tax cost of selling against a realistic assessment of the ongoing risk of holding — not against a fantasy scenario in which the stock only goes up.

The tax cost of selling a concentrated position depends on your state of residence, your total income, and whether the gain is short-term or long-term. For California residents, combined federal and state rates on long-term gains reach 37.1% (20% federal + 3.8% NIIT + 13.3% California). For Washington residents, the two-tier capital gains tax — 7% on gains between the annual standard deduction (approximately $278,000, adjusted for inflation each year) and $1,000,000, and 9.9% on gains above $1,000,000 — produces a blended effective state rate that varies by position size. On the $3,600,000 gain used in the examples throughout this guide, the Washington blended state rate is approximately 7.8%, bringing the combined federal and state rate to roughly 31.6%. For a full breakdown of 2026 federal and state capital gains rates, brackets, and how they apply to RSUs, ESPPs, and stock options, see Capital Gains Taxes.

Strategy 1: Systematic Selling Over Time

The simplest strategy is selling portions of the concentrated position systematically — a fixed amount or percentage each year — rather than all at once. This does not reduce the tax rate, but it controls the timing and distributes the tax liability across multiple years.

The benefit is primarily rate management. If a California employee has a year with lower ordinary income — perhaps they took a sabbatical, changed jobs, or are in a transition year — capital gains realized in that year may fall in a lower bracket or below the NIIT threshold. Spreading sales over five to ten years also avoids the one-year concentration of a very large tax bill.

The tradeoff: systematic selling leaves concentration risk intact during the selling period. An employee selling $500,000 of a $4,000,000 position per year over eight years holds a concentrated position for the full eight years. In each of those years, a company-specific event could destroy substantially more value than the tax that would have been owed on an earlier full sale.

Tax-loss harvesting in the broader portfolio can offset capital gains from systematic selling year by year. A diversified direct indexing account established alongside the selling program generates ongoing losses that directly reduce the net taxable gain in each selling year. For large positions with long selling horizons, this combination — systematic selling plus direct indexing for offset — is often the most practical ongoing approach. Both the Tax-Loss Harvesting and Direct Indexing knowledge pages cover these mechanics in detail.

Strategy 2: Exchange Funds (Section 721)

An exchange fund is a private limited partnership into which multiple investors contribute concentrated stock positions. Each investor receives a pro-rata partnership interest in the pooled portfolio — without triggering a taxable sale. The tax-free treatment rests on Section 721 of the Internal Revenue Code, which provides that no gain or loss is recognized when property is contributed to a partnership in exchange for a partnership interest.

The result: a $4,000,000 concentrated position in Google stock can be contributed to an exchange fund and replaced by a diversified interest in a pool of stocks contributed by other investors — with zero capital gains recognized and zero tax paid at contribution. The embedded gain is deferred, not eliminated — it carries into the investor's basis in the fund interest and becomes taxable on exit.

Two structural requirements govern exchange funds:

The fund must hold contributed assets for at least seven years (statutory minimum under Sections 704(c)(1)(B) and 737). In practice, most funds are structured for a 10-year horizon. At least 20% of the fund's assets must be held in qualifying illiquid assets — typically real estate.

Exchange funds are available only to accredited investors, typically require minimum contributions of $1,000,000 to $5,000,000, and charge annual management fees of 0.50%–1.50%. The seven-to-ten-year lockup is a hard constraint: investors who need liquidity before the fund matures cannot exit without triggering gain recognition.

For a California resident with a $4,000,000 position and a $400,000 basis, the exchange fund defers approximately $1,335,600 in tax — allowing the full $4,000,000 to compound rather than $2,664,400 after taxes. Over a ten-year period at 8% growth, the difference between compounding $4,000,000 versus $2,664,400 exceeds $2,000,000 before accounting for the deferred tax that will eventually come due.

The break-even analysis — comparing deferral benefit against fund fees and the larger future tax bill — is covered in detail in Exchange Fund vs. Selling Stock: Break-Even Analysis. To model the break-even for your specific position size, cost basis, and tax rate, use the Exchange Fund Calculator. The full mechanics of Section 721, holding requirements, and exit options are in What Is an Exchange Fund?

A note on 351 ETF Exchanges: Some exchange funds use a related technique — a Section 351 contribution of appreciated stocks into a newly formed ETF — as a portfolio management tool within the fund structure. This allows the fund to rebalance and manage tracking error without recognizing gains at the partnership level. Standalone 351 exchanges (outside an exchange fund) are also available through managers like Alpha Architect and Cambria, with strict IRS diversification requirements: no single holding may exceed 25% of contributed assets and the top five holdings may not exceed 50%. The 721 Exchange Funds and 351 ETF Exchanges Explained blog post covers both structures in detail.

Strategy 3: Variable Prepaid Forward Contracts (VPFs)

A Variable Prepaid Forward (VPF) is a contract between an investor and a financial institution in which the investor agrees to deliver a number of shares at a future date in exchange for an upfront cash payment today. The investor receives approximately 75%–85% of the current stock value as cash now, while retaining upside participation up to a cap and protection from downside below a floor.

The tax benefit: under current IRS rules, a properly structured VPF is not treated as a sale at the time the cash is received. Capital gains tax is generally deferred until the shares are delivered at the contract's maturity — typically two to five years later. This allows the investor to access liquidity from the concentrated position today while deferring the taxable event.

The VPF is most useful when an investor has a specific large upcoming expense — purchasing a home, funding a business, gifting to heirs — and wants to use the concentrated stock's value without triggering an immediate sale. It is not a mechanism for indefinitely avoiding capital gains tax.

The key risk is leverage: during the contract term, the investor still holds the concentrated stock (subject to the collar structure) while the cash proceeds are invested elsewhere. The investor is effectively exposed to both assets simultaneously. If the concentrated stock declines significantly and the diversified portfolio also declines, the losses compound. The 15%–20% discount (the VPF fee) means the strategy only makes economic sense if the stock appreciates during the contract period.

As covered in the Analyzing VPFs as a Leveraged Diversification Tool and Variable Prepaid Forward Contracts blog posts, VPF contracts are sophisticated instruments that require careful analysis of expected return, risk capacity, and fee structure before use.

Strategy 4: Donor-Advised Funds

A Donor-Advised Fund (DAF) is a charitable giving vehicle through which an investor contributes appreciated stock directly — rather than selling and donating cash. The contribution permanently eliminates both capital gains tax and NIIT on the contributed shares. The donor receives an immediate charitable deduction for the full fair market value at the time of contribution. The DAF sells the shares internally with no tax owed and holds the proceeds for granting to qualifying charities over time.

For the portion of a concentrated position that an investor genuinely intends to direct to charitable purposes, the DAF is the most tax-efficient mechanism available. There is no other strategy that permanently eliminates rather than defers the capital gains tax on appreciated stock.

The 2026 limits for charitable deductions: contributions of appreciated stock to a DAF are deductible up to 30% of AGI, with a five-year carryforward for amounts above that limit. Contributions of cash to a DAF are deductible up to 60% of AGI.

The categorical limitation: DAF contributions are irrevocable. Assets contributed to a DAF cannot be returned to the donor and cannot be used for personal purposes. This strategy is only appropriate when charitable giving is already part of the plan — it is not a mechanism for converting a concentrated position into personal liquidity with a tax benefit.

Strategy 5: Charitable Remainder Unitrust (CRUT)

A Charitable Remainder Unitrust is an irrevocable trust into which a donor contributes appreciated stock. The trust, which is a tax-exempt entity, sells the stock and reinvests in a diversified portfolio without recognizing any capital gains tax at the trust level. The donor — and potentially a spouse or other beneficiary — receives an annual income stream from the trust (typically 5%–8% of the trust's fair market value), and the remainder passes to charity at the end of the trust term or the donor's death.

The tax mechanics: the initial contribution generates a partial charitable deduction based on the actuarial present value of the remainder interest. The capital gain on the contributed stock is not recognized immediately — instead, it is spread across the income distributions paid to beneficiaries over many years, following IRS income character ordering rules (ordinary income first, then capital gains, then return of principal). This spreading effect can significantly reduce the annual tax burden relative to a lump-sum recognition.

A CRUT works best when three conditions are met simultaneously: the donor has genuine charitable intent for the remainder, needs or wants an income stream in retirement, and holds a highly appreciated position with a low cost basis. It is structurally unsuitable for investors who need full liquidity from the position or who have no charitable intent. The CRUT: Turning Concentrated Stock into Lifetime Income blog post covers the mechanics and use cases in detail.

Strategy 6: Direct Indexing With Loss Harvesting

Direct indexing — owning the individual stocks of a broad market index rather than a single ETF — generates systematic tax losses across individual positions even in years when the overall market is rising. A portfolio of 500 individual S&P 500 stocks will typically contain dozens of positions below their purchase price at any time, because individual stocks are far more volatile than the aggregate index. Each declining position is a separately harvestable tax loss.

For an investor selling a concentrated position over five to ten years, a direct indexing account established alongside the selling program provides a supply of capital loss carryforwards that directly offset the gains recognized each year. A $1,000,000 direct indexing account in an average year generates $30,000–$80,000 in harvestable losses; in a down year, the amount can be substantially larger.

The wash-sale interaction is the critical risk for FAANG employees: direct indexing platforms monitor their own account but cannot see RSU vesting calendars. If the platform harvests a loss on employer stock and an RSU vest delivers new shares of the same stock within 30 days, the wash-sale rule disallows the loss permanently. The standard practice is to exclude employer stock from the direct indexing portfolio entirely.

Direct indexing carries higher fees than simple ETF investing (typically 0.15%–0.40% annually), requires a minimum account size of approximately $250,000–$500,000 for meaningful implementation, and generates complex tax reporting. The strategy is most valuable for investors in high combined tax brackets — 32%–37% federal plus California's 13.3% — where each dollar of harvested loss saves the most tax. See Direct Indexing for Tech Workers for a full treatment of the mechanics.

Strategy 7: Qualified Opportunity Zone Investments

A capital gain from selling a concentrated position can be deferred — and the appreciation inside the investment can be permanently excluded — by reinvesting the gain proceeds into a Qualified Opportunity Fund within 180 days of the sale. The reinvested gain is deferred until the QOZ investment is sold.

The permanent exclusion benefit: if the QOZ investment is held for at least 10 years, any appreciation on the QOZ fund itself (above the reinvested basis) is permanently excluded from federal capital gains and NIIT. For an investor who realizes a $2,000,000 gain, reinvests in a QOZ fund, and holds for 10 years during which the fund doubles in value, the $2,000,000 of QOZ appreciation is entirely tax-free at exit.

The constraints are significant: QOZ investments must be in designated low-income census tract businesses or real estate, carry substantial illiquidity (10-year hold for the full exclusion), and require careful investment due diligence. The deferral of the original gain ends when the QOZ investment is sold — so the original tax bill eventually comes due. The strategy is most compelling as a long-horizon complement to other strategies, not as a standalone solution.

Comparing the Strategies

Each strategy has a different profile across four key dimensions:

Tax treatment: Does it defer the gain, eliminate it, or reduce it?
Liquidity: Can the investor access capital freely during and after?
Minimum position size: What threshold makes the strategy accessible or cost-effective?
Requirement: What non-tax condition does the strategy require?

Systematic selling defers nothing but preserves full liquidity. Exchange funds provide full deferral but require a 7–10 year lockup and $1M+ minimum. VPFs provide partial deferral with near-term liquidity at the cost of ongoing risk. DAFs permanently eliminate the gain but require irrevocable charitable commitment. CRUTs eliminate the gain at the trust level and spread recognition over years, but require charitable intent and generate illiquid trust interests. Direct indexing reduces the net gain through offsets, preserves full liquidity, and has no minimum charitable requirement. QOZ investments defer the original gain and permanently exclude future appreciation, but require 10 years and illiquid placement in designated communities.

These strategies are not mutually exclusive. A $5,000,000 concentrated position might be managed by contributing $1,000,000 to a DAF (for the charitable intent portion), contributing $2,000,000 to an exchange fund (for long-term deferral), and selling the remaining $2,000,000 systematically over four years offset by a direct indexing account. The right combination depends entirely on individual circumstances.

What Drives the Choice

Position size is the first filter. Standalone strategies like exchange funds and CRUTs have minimum thresholds of $1,000,000–$5,000,000. Below those thresholds, the practical options are systematic selling with direct indexing offsets, DAF contributions (if charitable intent exists), and VPFs (if near-term liquidity is needed).

Tax rate determines how much each strategy is worth. A California resident at 37.1% has far more to gain from deferral strategies than a Washington resident at 33.1% or an investor in a no-income-tax, no-capital-gains-tax state at 23.8%. The exchange fund break-even analysis, for instance, is meaningfully more favorable in California than in Washington.

Charitable intent gates the most tax-efficient strategies. If genuine philanthropic goals are part of the plan, DAFs and CRUTs provide permanent gain elimination that no other strategy matches. If there is no charitable intent, these tools are not applicable.

Liquidity horizon determines whether long-lockup structures are viable. An investor who may need liquidity within the next five years cannot commit capital to an exchange fund or a 10-year QOZ investment. Systematic selling and VPFs preserve more flexibility.

Cost basis as a percentage of current value determines how large the deferred tax is — and therefore how valuable deferral strategies are. A position with a 5% cost basis (95% embedded gain) benefits far more from deferral than a position with a 50% cost basis.

Estate planning goals can change the calculus entirely. An investor who plans to hold the position until death and pass it to heirs benefits from stepped-up basis — the embedded gain is forgiven at death for income tax purposes. For this investor, the tax cost of holding is reduced to zero (for income tax purposes), and the urgency of diversification is primarily a risk management question rather than a tax question.

ISO holders face an additional layer: AMT. For tech workers with Incentive Stock Options rather than RSUs, exercising ISOs creates an Alternative Minimum Tax preference item that can trigger significant AMT liability in the exercise year — independent of any capital gains strategies. The AMT exposure at exercise is a separate planning consideration that interacts with concentrated position management. See Alternative Minimum Tax (AMT) for a full treatment.