A family office client walks in with $140M in net worth. Sounds comfortable. Then you look at the composition: $119M of it sits in a single publicly traded stock from the company they founded twelve years ago. The rest is a house, some cash, and a pension that barely covers property taxes.
This person is not diversified. They’re not even close. They’re one earnings miss, one regulatory investigation, one sector rotation away from losing 40% of their wealth in a quarter. We’ve watched it happen to people who were told by their advisors that “conviction investing” was a strategy.
Managing concentrated positions for ultra-high-net-worth clients is one of the hardest advisory problems out there. Not because the financial engineering is complicated. It’s complicated, sure, but the real difficulty is behavioral. The client built their wealth holding this one thing. Every instinct they have tells them to keep holding. Your job is to help them see the math without making them feel like you’re attacking the thing they built.
Why Concentration Persists
Before we get into the mechanics, it’s worth understanding why intelligent people maintain concentrated positions long past the point where it makes any rational sense.
The first reason is identity. Founders and early executives tie their sense of self to the company. Selling stock feels like betrayal, even after they’ve left. We had a client who’d been retired for four years and still checked the stock price before breakfast every morning. He’d built the company. Selling felt like saying it would fail.
The second reason is tax anchoring. A founder who bought shares at $0.001 and watches them trade at $340 sees any sale as triggering a massive capital gains event. They focus on the tax bill rather than the risk they’re carrying. We’ve had clients tell us, with complete sincerity, that they’d rather lose $50M in a drawdown than pay $15M in taxes. The math doesn’t work, but the psychology is real.
The third is overconfidence. They know the company better than any analyst. They’ve been right about it for a decade. Why would they doubt it now? This one is the hardest to address because it’s partially true. They do know the company well. What they don’t know is the market’s capacity to reprice an entire sector overnight for reasons that have nothing to do with individual company performance.
The Diagnostic Framework
When we take on a concentrated position engagement, we start with a diagnostic that covers four dimensions. We don’t jump straight to solutions. Clients who feel rushed into diversification will resist. Clients who understand their own risk profile will often propose solutions themselves.
Dimension one: Liquidity reality. What does the client actually need from their portfolio in the next 1, 3, 5, and 10 years? Not aspirational spending. Real obligations. We’ve found that most UHNW clients dramatically underestimate their annual burn rate. A client who tells you they spend $400K a year is usually spending $800K once you factor in property maintenance, travel, family support, philanthropy, and the discretionary spending they don’t track. Map the real number, stress-test it against a 50% portfolio drawdown, and suddenly the conversation about diversification gets very serious very fast.
Dimension two: Restriction analysis. Are there lockup periods, blackout windows, Rule 144 limitations, or contractual restrictions on sales? For current executives and board members, the trading windows may be narrow. For former insiders, the restrictions are lighter but still real. We’ve seen clients assume they were free to sell when they still had reporting obligations under Section 16, or when their shares were subject to an undisclosed standstill agreement they’d forgotten about. The legal audit happens before any strategy discussion.
Dimension three: Tax topology. This isn’t just “what’s the capital gains rate.” It’s the full picture: federal and state rates, net investment income tax, state-specific rules on installment sales, charitable deduction limitations, estate tax exposure on the concentrated position, and the interaction between all of these. A client in California faces a very different optimization problem than one in Wyoming. A client with a cross-border structure involving a non-US trust adds another layer entirely. We build a complete tax map before proposing any transaction.
Dimension four: Behavioral profile. How will the client react if the position drops 30% after they sell? How will they react if it rises 30% after they sell? These aren’t rhetorical questions. We ask them directly. The client who says “I’d be fine either way” is lying. Everyone has a regret threshold. Finding it early prevents the kind of emotional decision-making that derails a multi-year diversification plan six months in.
The Structured Diversification Toolkit
Once the diagnostic is complete, we build a customized strategy from a set of well-tested tools. No single tool works for everyone. The right answer is almost always a combination.
Systematic selling programs. The simplest approach: establish a 10b5-1 plan (for current insiders) or a disciplined selling schedule (for former insiders) that liquidates a fixed dollar amount or percentage each quarter. The advantage is behavioral. Once the plan is set, the client doesn’t have to make active sell decisions. The shares convert to cash on autopilot. We typically recommend targeting 5-15% of the concentrated position per year, depending on the client’s age, liquidity needs, and tax situation. At that pace, a client with a $100M position builds a meaningfully diversified portfolio within four to five years without triggering a single large tax event.
Exchange funds. The client contributes their concentrated stock to a partnership that holds a diversified basket of other concentrated positions. They get diversification without triggering a sale. The catch: exchange funds require a seven-year holding period, the client gives up some liquidity, and the fund needs to hold at least 20% in illiquid assets (usually real estate). Exchange funds work well for clients who have a long time horizon and want diversification without current tax impact. They work poorly for clients who might need liquidity within the decade.
Prepaid variable forwards. The client enters into a contract to deliver shares at a future date in exchange for an upfront cash payment. They retain some upside participation (up to a cap) and give up the downside below a floor. It’s essentially a collar with an advance on the proceeds. Tax isn’t triggered until settlement. This is a good tool for clients who want liquidity now but aren’t ready to make a final decision about selling. The cost is the spread between the floor and cap, plus the financing embedded in the forward pricing.
Charitable strategies. For clients with philanthropic goals, donating appreciated stock to a donor-advised fund or private foundation eliminates the capital gains entirely while generating a charitable deduction up to 30% of AGI. We often pair this with systematic selling: donate 20-25% of the annual diversification target, sell the remainder. The tax savings from the donation partially offset the tax cost of the sale. The math can be powerful, but only if the client actually wants to give money away. We never recommend charitable strategies as pure tax optimization. That’s a road to an audit.
Hedging overlays. Protective puts, costless collars, and monetization structures can cap downside without triggering a sale. These work as short-term risk management while the client executes a longer-term diversification plan. The problem is cost. In a high-volatility environment, the option premiums eat into the value of the strategy. And collars that are too tight can be recharacterized by the IRS as constructive sales. We use these as bridge tools, not as permanent solutions.
The Conversation Architecture
The tools matter less than the conversation. Most concentrated position advisory fails because the advisor pushes too hard too early and the client digs in.
We use a three-meeting framework that we’ve refined over years of these engagements.
Meeting one: The stress test. We don’t talk about selling. We talk about scenarios. What happens to your lifestyle if the stock drops 40% and stays there for three years? What if the company gets acquired at a 30% discount to current price? What if there’s a liquidity crisis and you can’t sell when you need to? We present this with actual numbers tied to their spending. Not hypotheticals. Their mortgage, their kids’ school fees, their annual giving. When a client sees that a 45% drawdown means selling the vacation home and pulling kids from school, the conversation shifts from “should I diversify?” to “how do I diversify?”
Meeting two: The tax reality. Now we show the math on what it actually costs to diversify. The gap between perceived tax cost and real tax cost is usually significant. Clients anchored to a 37% rate are surprised to learn that the blended effective rate on a staged diversification plan might be 24-28% when you factor in long-term capital gains rates, charitable offsets, and state planning. We present three scenarios: aggressive diversification (high tax, fast risk reduction), conservative (low tax, slow risk reduction), and our recommended middle path.
Meeting three: The plan. A written diversification plan with specific dollar amounts, timelines, tools, and review triggers. We include circuit breakers: if the stock drops below a certain price, we accelerate the selling program. If tax rates change, we adjust the charitable component. The plan is living, not static.
The Mistakes We See Other Advisors Make
The most common mistake is treating this as a portfolio construction problem when it’s an advisory relationship problem. A client who doesn’t trust you won’t sell their stock because you showed them an efficient frontier. They’ll sell when they believe you understand their situation and have their interests ahead of your AUM growth.
The second mistake is ignoring the family dimension. In UHNW families, the concentrated position often has multigenerational significance. The patriarch who built the company may have strong views about family members selling. Spouses may disagree about risk tolerance. Children may have their own concentrated positions in the same stock through trusts. We insist on understanding the full family dynamic before proposing anything.
The third mistake is failing to coordinate across advisors. A typical UHNW client has a tax attorney, an estate planning lawyer, an investment advisor, a family office executive, and sometimes a business manager. If the diversification plan isn’t coordinated across all of these, it will create conflicts. We’ve seen charitable strategies derailed because the estate plan assumed the concentrated position would be part of the residuary estate. We’ve seen hedging strategies blow up because the tax attorney wasn’t consulted on constructive sale risk. The coordination meeting is non-negotiable.
What Happens When Clients Refuse
Some clients listen to everything and still refuse to diversify. They understand the risk. They’ve seen the stress test. They simply believe, with conviction, that holding is the right call.
Our approach: document the recommendation clearly. Update the stress test quarterly. And keep the relationship strong enough that when the client’s view changes, or when the stock corrects and the stress becomes real, they’ll call us first.
We had a client who refused diversification for three years. The stock tripled. He felt vindicated. Then it dropped 55% in nine months during a sector rotation. He called on month seven of the decline. We executed a staged diversification over the following 18 months that preserved 60% of his peak wealth.
The client who calls during the crisis is the client who you kept talking to during the good times.
Concentrated position management is a patience game. The framework gives you the tools and the structure. The relationship gives you the permission to use them.