Topic guide
Concentrated stock
When one low-basis position dominates your net worth, selling triggers a large tax bill and holding leaves you exposed. This guide maps the ways to reduce that risk — option overlays, collars, exchange funds, prepaid variable forwards — and the tax rules that govern each, so you can pace an exit on your own terms rather than in one taxable shot.
Concentrated stock explained
A concentrated stock position is what happens when one holding grows to dominate your net worth — RSUs and options that vested and appreciated, a founder or early-employee stake, an inherited holding, or a stock you have owned so long that its cost basis is a fraction of today’s value. It is a good problem to have, and a genuinely hard one to solve.
The hard part is the bind between risk and tax. Holding the position leaves you exposed to a single company; selling it can trigger a large capital-gains bill in one year. That trade-off is why so many concentrated positions simply sit — the tax cost of fixing the risk feels worse than the risk itself.
There is a middle path. Instead of one taxable sale, you can hedge the downside, generate income, and diversify on your own schedule — using option overlays, exchange funds, prepaid variable forwards, or paced sales, each with its own tax rules and trade-offs. This guide maps those paths, the code sections that govern them, and how to think through which fits your situation. The FAQ answers the questions we hear most.
Start here
The foundational thesis on exiting a concentrated position tax-efficiently.
Common questions
What is a concentrated stock position?
A concentrated position is one holding that makes up an outsized share of your net worth — often company stock from equity compensation, a founder stake, an IPO windfall, or a long-held low-basis position that has grown for years. There is no universal threshold, but when a single stock dominates a portfolio, its risk and tax profile start to drive your overall financial picture.
Why is a concentrated position risky?
Single-stock risk. A diversified portfolio spreads company-specific shocks across many names; a concentrated position leaves you fully exposed to one company’s fortunes. The dilemma is that the obvious fix — selling — often triggers a large capital-gains tax, so investors hold on and stay exposed rather than take the tax hit all at once.
How can I diversify without a big tax bill?
Several paths exist, each with trade-offs: an option overlay (collars or covered calls) that hedges or generates income while you diversify on a schedule; an exchange fund that swaps the stock for a diversified interest with a multi-year lockup; a prepaid variable forward; or simply pacing sales across tax years. The right mix depends on your basis, timeline, liquidity needs, and how much control you want to keep. This is not tax advice.
What is the difference between an exchange fund and an option overlay?
An exchange fund swaps your single stock for a diversified fund interest and locks it up, giving up control of the holdings. An option overlay keeps you in your own shares while hedging or generating income, with more control and no multi-year commitment. Which fits depends on liquidity needs, timeline, and how much control matters.
What are the constructive-sale rules?
IRC §1259 can treat certain fully-hedged positions as if you had sold the stock — triggering the gain — even though you still hold the shares. It is aimed at strategies that eliminate essentially all risk and reward while deferring tax. Well-structured overlays keep enough two-way exposure to stay clear of it. Treatment is fact-specific; consult a tax professional.
Can I sell a concentrated position gradually?
Yes. Pacing sales across multiple tax years spreads the gain and can keep you in lower brackets, and it pairs well with an overlay that hedges or generates income on the shares you still hold. The trade-off is that you stay exposed to the stock while you unwind. Sequencing and timing are where most of the after-tax difference is made.
Educational information only, not investment or tax advice. Options involve risk and are not suitable for all investors. Tax treatment is fact-specific; consult a tax professional.