How to Manage a Concentrated Stock Position

You've done well — and a big part of your net worth is tied up in a single stock to prove it. Maybe it's RSUs that have vested over the years. Maybe it's options from a company that took off. Maybe it's founder shares you've held since day one.

Whatever the path, the result is the same: too much of your financial future is riding on one name.

You already know you should diversify. But every time you think about it, the same questions stop you cold. What about the tax hit? What if the stock keeps going up? What if I need the money but don't want to sell right now?

These aren't simple questions — and the standard advice of "just sell and diversify" ignores the complexity of your actual situation.

This guide is designed to cut through that noise. We'll walk through the tools available, how they work in plain English, and how they can be layered together into a real playbook. The right answer depends on your basis, your timeline, your tax picture, and what matters most to you. This framework helps you find it.

How to Know If You Have a Concentration Problem

If more than 10–20% of your net worth is in a single stock, you have a concentrated position. That's the starting line.

But here's the thing most people don't think about: concentration gets worse over time, not better. Every vesting cycle adds more. Every year the stock goes up, the embedded gain grows — and the cost of doing something about it goes up with it.

The question isn't whether the stock is good. The question is: how would you feel if you woke up tomorrow and the stock was down 10%? 20%? 30%?

Is there a world where you see that happening — maybe not overnight, but over the next few years? If the answer is yes, it's worth looking at strategies to protect against those scenarios.

The Playbook at a Glance

Every concentrated stock situation is different, so there's no one-size-fits-all answer. But there are six core tools, and each one has a specific job. Some protect. Some unlock cash. Some generate tax savings. The most effective approach is usually layering a few of them together.

Here's how they compare:

Now let's walk through each one.

Give Smart

Give Smart
Donor-Advised Fund (DAF)

If giving is part of your plan, appreciated stock is one of the best assets to donate.

Contributing shares directly to a Donor-Advised Fund lets you take the full fair-market-value deduction while avoiding the capital gains tax entirely. You're turning a tax problem into a giving strategy — and diversifying in the process. You can recommend grants to the charities you care about over time, on your schedule.

For high earners sitting on a low-basis position with philanthropic goals, this is one of the most efficient moves available. Start with your lowest-basis shares for maximum impact.

Protect

Protect
Costless Collar

You're not ready to let go of the position. Maybe you're still bullish on the company. Maybe there's a catalyst you're waiting for. Maybe you've held it this long and you're just not there yet.

That's fine. But "holding and hoping" isn't a strategy, and it doesn't protect your family if the stock drops 40% while you're waiting.

A costless collar changes the equation. Using options, you set a defined floor on your downside and a ceiling on your upside — and the two premiums offset each other, so there's no out-of-pocket cost. You choose the terms. Once it's in place, the position has boundaries. The open-ended risk that keeps most concentrated stockholders up at night is gone.

Unlock

Unlock
Box Spread Monetization

Once a costless collar is in place, a box spread lets you take the next step: unlocking capital without triggering a sale.

A box spread is an options structure that effectively allows you to borrow against the collared position. You receive a lump sum of cash — real liquidity — while remaining the owner of the stock. No taxable event is triggered. You still have your upside within the collar terms. But now you've freed up cash to deploy elsewhere: into a diversified portfolio, a long/short SMA, real estate, or wherever it serves your goals.

The beauty of pairing a collar with a box spread is optionality. You're not making a permanent decision. You're buying yourself time — on defined terms, with defined risk — while keeping every future door open.

Hedge + Monetize

Hedge + Monetize
Prepaid Variable Forward (PVF)

A prepaid variable forward is one of the most powerful tools available for a concentrated position — and it solves multiple problems at once.

Start with the hedge. A PVF protects you against anything past roughly 10% downside. You're no longer lying awake wondering what happens if the stock drops 30% overnight on an earnings miss or a sector rotation. That risk is off the table.

But you're not giving up everything. You still participate in upside — typically 15–20% — so if the stock keeps running, you're not sitting on the sidelines watching.

Then comes the monetization. The PVF lets you borrow up to 80% of the position's value without triggering a taxable sale. That's real capital you can put to work immediately.

Offset

Offset
Tax-Aware Long/Short SMA

Whether you've sold a position outright, monetized through a PVF, or unlocked cash via a collar and box spread, the next question is the same: where does the capital go?

A tax-aware long/short separately managed account is designed to do two things at once: build a diversified portfolio and aggressively harvest tax losses.

Running at 130/30 leverage or higher, the SMA generates losses that offset capital gains — whether from a direct sale or the eventual settlement of a PVF or collar unwind. The goal is to recapture the full tax cost within 3–5 years.

Here's the translation: the account value goes up (because it mirrors something like the S&P 500), but we've created $200–300K in paper losses we can use to offset gains. This is the engine that makes the rest of the playbook work.

Swap

Swap
Exchange Fund

An exchange fund lets you swap your concentrated position into a diversified portfolio without selling. You contribute your stock into a partnership alongside other investors with their own concentrated positions. After a required holding period (typically seven years), you receive a diversified share of the pool. No taxable event at the time of contribution.

Exchange funds have high minimums and are only available to qualified purchasers. Availability depends on the specific stock and fund. But for a low-basis position where you want diversification without the tax bill, they're a strong option in the playbook.

The Full Playbook: Stacking Strategies

In practice, the most powerful approach isn't choosing one tool — it's layering them together. Here's how a complete playbook might look for a high earner with a large, low-basis concentrated position:

Step 01 · Give Smart
Donate Your Lowest-Basis Shares to a DAF

This eliminates the capital gains tax on the shares with the biggest embedded gain, gives you a fair-market-value deduction, and immediately reduces your concentration. The tax savings from the deduction help offset the cost of unwinding the rest.

Step 02 · Protect
Hedge the Remaining Shares

Use a Prepaid Variable Forward or Costless Collar on the remaining shares. This defines your risk — you're no longer fully exposed while you work the rest of the playbook.

Step 03 · Unlock
Monetize

If you went the collar route, sell a box spread to receive a lump sum of cash without triggering a taxable sale. If you went the PVF route, the monetization component is built in — no box spread needed.

Step 04 · Offset
Invest the Proceeds into a Long/Short SMA

Put that capital to work in a tax-aware separately managed account running at 130/30 leverage or higher. The SMA starts harvesting losses immediately — building the tax offsets you'll need when the position eventually unwinds.

Some clients stop after step two, and that's okay. Some go through the entire sequence. The playbook meets you where you are.

Questions to Ask Yourself Before Making a Move

Every concentrated stock situation is different. Before you make a move, think through these:

1. What percentage of my net worth is in a single stock?
2. What's my cost basis — and how much of the gain is short-term vs. long-term?
3. Am I in a trading window, or subject to blackout periods?
4. What's my vesting schedule — how much more is coming?
5. Do I need liquidity in the near term for a purchase, expense, or goal?
6. Am I planning any charitable giving this year or in the next few years?
7. What's my marginal tax rate — federal and state?
8. Do I have losses elsewhere in the portfolio I could harvest to offset gains?
9. Is my estate plan up to date — and does it account for this position?

The right playbook depends on your answers. That's why we start every conversation with these questions before recommending anything.

Frequently Asked Questions