Concentrated Stock Positions: Five Strategies for the Exec Sitting on a Large Holding

The core tension: selling is painful, holding is risky

Most executives and founders with large stock positions feel stuck. The position worked. That’s why it’s large. But large means concentrated, and concentrated means you have most of your financial life tied to the performance of a single company. Meanwhile, the tax cost of selling can consume 30–37% of the gain before you have cash to redeploy.

The two obvious choices are both bad:

• Sell: Immediate capital gains bill. On a $2M gain in California, the combined federal (23.8%) and state (13.3%) tax can exceed $740,000. You diversify, but you’re diversifying with 63 cents on the dollar.
• Hold: No tax bill today, but 100% exposure to one company. Earnings miss, regulatory change, key executive departure: any of these can impair a position that a small distribution could have protected.

Five strategies sit between those two extremes. Each has different tax treatment, liquidity implications, and complexity. The right choice depends on your goals: Are you charitably inclined? Do you need liquidity? Is California residency a factor? How long can you wait?

Option 1: Sell outright

The simplest path. You sell the position, pay the tax, and diversify the proceeds.

Key considerations for an outright sale:

• Holding period: Long-term (12+ months) gets 0/15/20% federal rates. Short-term is ordinary income (up to 37%). In California, both are ordinary income at the state level regardless of holding period.
• NIIT: The 3.8% Net Investment Income Tax applies to investment income (including capital gains) above $200,000 (single) or $250,000 (MFJ). Large capital gain realizations almost always trigger it.
• Tax-year spreading: Splitting the sale across two calendar years can reduce the marginal rate if your other income is near a bracket boundary.
• Estimated payments: A large capital gain sale creates an immediate tax obligation. A quarterly estimated payment may be required before April 15 to avoid underpayment penalties.

Option 2: Donate to a Donor-Advised Fund (DAF)

If philanthropic giving is part of your plan, donating appreciated shares directly to a Donor-Advised Fund is the most tax-efficient combination of diversification and giving.

How it works: you transfer shares directly to a DAF without selling them first. The DAF sells the shares and pays no capital gains tax (it’s a charitable entity). You receive a charitable deduction for the full fair market value at the time of the contribution. The DAF holds the proceeds in an investment account that you can distribute to qualifying charities over time.

• Capital gains avoided: Neither you nor the DAF pays capital gains on the appreciated shares
• Charitable deduction: Full FMV at contribution date, up to 30% of AGI for long-term appreciated assets; excess carries forward 5 years
• California: California follows federal treatment for charitable contributions of appreciated property
• Liquidity: The funds are permanently committed to charity. You cannot take them back.

See charitable giving for business owners for the full mechanics and AGI limitation rules.

Option 3: Qualified Opportunity Zone (QOZ) reinvestment

If you sell the position and reinvest the gain in a Qualified Opportunity Zone Fund within 180 days, you can defer the capital gain under federal law. For investments held 10+ years, all appreciation within the QOZ fund is excluded from federal income tax.

• Deferral: The original gain is deferred until the earlier of (a) sale of the QOZ investment or (b) December 31, 2026 (the current deferral deadline under current law)
• Exclusion: Appreciation on the QOZ investment itself (not the original deferred gain) is excluded from federal tax if held 10+ years
• California: Does not conform. California taxes the original gain in the year of the sale regardless of QOZ reinvestment. The California tax is not deferred.
• Liquidity: QOZ funds are illiquid. Investments are typically locked for 10 years.

See qualified opportunity zone investments for the mechanics, qualifying fund criteria, and California non-conformity analysis.

Option 4: Exchange fund

An exchange fund (sometimes called a swap fund) is a private investment partnership. Multiple investors contribute appreciated securities to the fund without selling, in exchange for diversified partnership interests. The contribution is structured under Section 721 of the tax code as a tax-free exchange, deferring the capital gain.

• Tax treatment: Gain deferred at contribution; recognized when you eventually exit the fund
• Diversification: The fund holds a basket of securities contributed by multiple investors. You trade concentration risk for diversified exposure.
• 7-year holding requirement: The fund must hold the assets for at least 7 years before distributing securities back to partners; early withdrawal triggers the gain
• Accredited investor: Exchange funds are private offerings available only to accredited investors ($1M+ net worth excluding primary residence, or $200K+ annual income)
• Illiquidity: Your capital is locked for the holding period; exchange funds are not liquid investments
• California: California generally follows the federal treatment for Section 721 exchanges

Exchange funds are managed by specialized investment managers. Your financial advisor needs to source a fund with compatible holdings. The fund must diversify across industries and asset types, including at least 20% in illiquid assets (real property or similar) to qualify under IRS rules.

Option 5: Protective put / collar

Options strategies allow you to hedge price risk on a concentrated position without selling and without triggering a current capital gain. Two common structures:

• Protective put: You buy a put option giving you the right to sell shares at a set price (the strike). If the stock falls below the strike, the put gains value, offsetting your loss on the underlying position. No deemed sale, but the put premium is a cash cost.
• Collar: You buy a put (downside protection) and sell a call (cap on upside) simultaneously. The call premium offsets the put cost, reducing or eliminating out-of-pocket cost. You give up upside above the call strike in exchange for downside protection below the put strike.

Key rules for avoiding constructive sale treatment:

• Leave meaningful upside above the call strike (typically 15%+ spread)
• Avoid “variable prepaid forwards” that look economically like a sale
• The holding period for the underlying shares is suspended while the hedge is in place, which is relevant for qualifying for long-term treatment

Comparing all five strategies

CPA and advisor coordination is not optional

A large position exit or hedge changes your tax picture in ways your advisor can’t see and your CPA can’t fix after the fact. Both need to be in the room before the decision is made, not after the trade confirms.

Each of these strategies creates downstream tax effects that require coordination between your investment advisor and your CPA:

• Capital gain realization: Pushes AGI higher, which can trigger NIIT, IRMAA Medicare surcharges, phase-outs of deductions, and higher estimated payment requirements
• DAF contribution: Creates a large charitable deduction that may need to be spread across years; affects SALT planning and itemized deduction strategy
• QOZ reinvestment: California tax due in the sale year regardless of federal deferral; cash flow planning required
• Exchange fund: Partnership K-1 reporting; ongoing state tax considerations depending on fund investments
• Collar execution: Holding period suspension; premium income; potential constructive sale review

These decisions need to be modeled before execution, not reported after the fact. An advisor who executes a collar without knowing your tax position, or a CPA who files your return without knowing about a QOZ reinvestment, is not serving you well. The value of coordination is entirely in what gets caught before it’s too late to act.