When the Position Becomes the Plan

There is a particular moment in the December calendar, somewhere between the closing of the brokerage statements and the conversation with the accountant, when a holder sits down to add up what they have. The exercise is meant to be a tally. It is also, for households of a certain composition, a quiet diagnostic. The position that built itself through successive restricted-stock vests, or through a single liquidity event, or through a stake inherited and never reduced, is now a number on the page that the other numbers cannot easily absorb. The number is rarely an instruction. It is more often the announcement that an instruction is overdue.

The wider commentary on concentrated stock tends to begin with thresholds — ten percent, twenty-five, the much-cited thirty — as though there were a line one crossed at which the appropriate action became unambiguous. The thresholds, on closer inspection, are folk wisdom rather than analysis. What changes, when a single position grows past a certain share of a household's liquid net worth, is not the holder's exposure to that position; the holder always had it. What changes is the relationship between that exposure and the household's other holdings. Past a certain point, the position no longer sits within the portfolio. It defines the shape of the portfolio. And the question shifts, accordingly, from how to allocate the rest to how to manage the part.

This piece is about the moment that transition happens, the three variables worth measuring when it does, and the question of what comes next — framed not as a single decision but as a plan that unfolds over time.

When the position becomes the plan

The threshold conversation is easier to have than the diagnostic conversation underneath it. Thirty percent of net worth in a single ticker is a number that fits on a page. The diagnostic question is harder: at what point does the position's outcome dominate the household's? Past that point, the position is the plan in a strict and unflattering sense — the household's financial future is, in expectation, more dependent on the trajectory of that one position than on any combination of saving rate, allocation choice, or operating decision elsewhere in the picture. A diversified portfolio is, by construction, indifferent to which of its components moves. A concentrated holder is not indifferent at all.

A reasonable test, before reaching for percentages, is to ask what would change if the position halved. For a holder whose other assets, salary, and savings could comfortably absorb a fifty-percent decline in the concentrated position without changing the household's plan, the answer is structural: concentration is uncomfortable but not yet structural. For a holder for whom the same decline would force a postponed retirement, a sold house, a child's tuition rearranged, or a return to active income beyond the timeline previously planned for, the position is no longer one input among many. It is the most consequential thing the household owns.

The thirty-percent figure that appears in most rules of thumb tracks this transition approximately, in a population-averaged way, because below it most households can absorb the position's downside, and above it most cannot. But the figure is a proxy, not the underlying signal. Two households with identical thirty-percent positions can sit on opposite sides of the structural line described above, depending on the rest of their picture. The diagnostic, properly done, looks at the rest of the picture before looking at the percentage.

The first axis — what the gain is

The first variable that determines what is actually available to a concentrated holder is the gap between the position's basis and its current market value. Two positions worth identical amounts on the year-end statement can occupy entirely different positions in the holder's decision space depending on what they cost. A ten-million-dollar position acquired at a basis of nine million dollars can, at a federal long-term-capital-gains rate of twenty percent, be wound down at a tax cost of roughly two hundred thousand dollars — a sum manageable in a single tax year for a holder of this size. The same ten-million-dollar position held at a basis of half a million dollars carries an embedded gain of nine and a half million dollars, and at the same rate produces a tax bill near nineteen times the first — about one million nine hundred thousand dollars, before state tax, before the net-investment-income tax, before any further interactions.

The two positions are economically equivalent to the household's net worth. They are not equivalent at all to the household's room to maneuver. The basis figure determines the cost of acting; the market-value figure determines the urgency of acting; the menu of available tools is shaped by the gap between them. A holder evaluating their options should carry both numbers, not just the market value, into every conversation. A position with a thirty-percent embedded gain has options that a position with a ninety-percent embedded gain does not, and vice versa: a position with a ninety-percent embedded gain produces meaningful benefits from strategies — gift, charitable transfer, exchange fund, defer-and-step-up — that a position with a thirty-percent embedded gain does not need and that would generally not improve the after-tax outcome.

The other operative number that often goes uncited is the net investment income tax — three-point-eight percent, applied on top of the federal capital-gains rate — together with the state tax that sits over the federal rate in many states where concentrated positions are most commonly held. A California holder selling into long-term capital-gains rates is closer to a combined thirty-seven percent than to the headline twenty. A New York City holder is in the same neighborhood. The cost of acting, properly calculated, is rarely the federal figure on its own.

The second axis — what the vest schedule says

A concentrated position that the holder has, in some sense, finished accumulating is a different planning problem from a concentrated position that continues to grow. Restricted-stock awards that vest over four-year schedules, often layered on top of one another in successive grant years, produce a household whose concentration is not a static measurement but a moving target. The holder who looks at their year-end tally and resolves to sell two percent of the position each quarter may find, after a year of doing so, that the position has not shrunk at all — because the vests over the same period have been larger than the sales.

The corollary is that decisions made on the basis of a static snapshot tend to underperform decisions made on the basis of the trajectory the snapshot implies. A position at thirty percent of net worth today, with another seven percent in unvested restricted stock landing over the next two years, will, if nothing else changes, be a position at thirty-six or thirty-seven percent of a somewhat larger net worth by then. The plan that holds the line on concentration must, in such a household, do more than offset existing exposure; it must offset the future flow as well. This is not a small amendment. For a senior executive at a public company with several more years of grant accumulation ahead, the necessary sale pace may be twice or three times what the static analysis would suggest.

The implication, for holders in this position, is that the question of how fast to sell runs through the question of how fast the position is replenishing. The two numbers belong on the same page. Many planning conversations carry only the first.

The third axis, the one decks tend to skip

The third variable, and the one that the standard concentration analysis most often elides, is the correlation between the holder's salary and the position's outcome. For a senior executive whose paycheck is paid by the same company whose stock dominates the household's portfolio, the position's actual risk to the household is amplified by a factor that the percentage of net worth does not capture. A bad year for the company is also a bad year for the salary, and may be a year in which the position cannot easily be sold because of insider-trading windows, scheduled-vest constraints, or simply the awkward optics of the most senior officer selling on the way down. The measured concentration percentage understates the household's actual exposure to a single underlying risk factor.

Founder households often live the more extreme version of this. The position, the salary, and a substantial part of the household's social capital and professional identity are bound, for some period, to the same outcome. The numerical concentration is one figure; the lived concentration is closer to all of it. The holder may not be in a position to act on this observation immediately — pre-IPO holders frequently cannot, and post-IPO holders are constrained in ways that the eventual unwinding plan must accommodate — but the observation does change the way the position should be sized in the household's planning, and the appropriate target concentration on the way out.

The implication for diversification timing is straightforward but often unstated. A holder whose salary correlation is high should be willing to absorb a higher tax cost to reach a lower concentration, because the marginal risk reduction per dollar of taxes paid is greater than the headline numbers suggest. A holder whose salary is uncorrelated — a retiree, an inheritor, a founder who has fully exited the company — has more room to optimize the unwinding for after-tax efficiency. The same percentage on the year-end statement, in other words, points to different speeds depending on what the rest of the household's economic life looks like.

A question worth asking

If the position went to zero tomorrow, would the household's plan change — and by how much?

The menu, looked at briefly

What follows is a brief tour of the major paths a concentrated holder can take. None of them is treated in depth here; each is the subject of its own dispatch, or will be. The point of this section is the shape of the menu, not the mechanics of any single item on it. A holder evaluating these in earnest will eventually need the mechanics. The first step is recognizing what is actually on the table.

Do nothing. The choice not to act is a real choice, and not always the wrong one. Holders with low embedded gain, short time horizons, or a meaningful probability of dying with the position intact may produce better after-tax outcomes by simply waiting for the step-up. The framing of holding as a failure of planning is more common in the marketing literature than in the analysis. A deliberate decision to hold, made with the relevant numbers in view, is a planning choice.

Sell into capacity. The simplest path. A holder paces sales into their annual capacity, measured in tax friction the holder is willing to absorb in a given year, and unwinds the position over a calendar period sized to the position and the holder's after-tax priorities. For positions whose embedded gain is modest, this is often the cleanest path.

Exchange fund. A §721 partnership that accepts contributions of appreciated stock and produces, after seven years, a diversified basket at the original carryover basis. The mechanics and the holder-side tradeoffs are treated in The Lockup You Sign For. The headline tradeoff is diversification now against illiquidity and structural decisions the holder cannot revisit during the lockup.

Direct indexing. A separately managed sleeve, run in parallel to the concentrated position, that harvests losses from a diversified index portfolio and produces carryforwards against which incremental sales of the concentrated position can be applied. Reduces the cost of acting rather than acting on the position directly. Treated in the same companion piece.

Options collar. A purchased put paired with a written call, sized to bracket the position's price within a defined band. Reduces downside risk without realizing gain, at the cost of capping upside. Subject to the constructive-sale rules of §1259, which constrain how tight the band can be. The constructive-sale boundary is where the mechanics get unforgiving; the strategy belongs in its own piece.

Charitable strategies. Outright gifts of appreciated stock to public charity at fair market value, contributions to a donor-advised fund, contributions to a charitable remainder trust that pays the holder back over time while removing the gain from the holder's recognition. Most useful when the holder has a sustained philanthropic plan and the embedded gain is large; less useful as a one-time concentration solution.

The menu is not the plan. The plan is the order in which the menu is sequenced.

What this piece doesn't pull

Several threads have been deliberately left for separate dispatches. The mechanics of options collars and prepaid variable forwards, and the constructive-sale rules of §1259 that constrain both, are their own subject. The detailed comparison of charitable structures — donor-advised funds against charitable remainder trusts against charitable lead trusts, with attention to the holder's expected income trajectory — is its own subject. State-specific overlays — California's nonconformity to certain partnership treatments, New York City's residency timing rules, the trust-domiciled alternatives that some holders evaluate — interact with each of the strategies above in ways that depend on the holder's residence trajectory.

The decision to use exchange funds and direct-indexing sleeves together in a hybrid is addressed in the companion piece on those two structures. The decision to use a §1042 ESOP rollover, for the narrow population of holders for whom it is available, is addressed elsewhere. The decision to gift to family rather than to charity, with attention to the lifetime exemption window, sits with separate analysis on inheritance and gift mechanics.

Each of these threads is meaningful, and each, in a particular holder's situation, may turn out to be the most consequential lever. The point of this dispatch is the framing layer beneath them.

Where this lands

The year-end tally produces a number. The number does not produce a plan; it produces a deadline. The deadline is not a date in the calendar but a recognition that the next iteration of the same number, twelve months from now, will be the result of decisions made between then and now, and that the room to make those decisions narrows the longer the position sits unmanaged.

The plan that follows the diagnostic typically looks less like a single action and more like a sequence. Some part of the position is sold this year, within a defined tax-friction budget. Some part is committed to a structure — exchange fund, direct-indexing sleeve, charitable vehicle — whose returns the holder will accept over a multi-year window. Some part is left intact for reasons the diagnostic justifies, whether step-up timing or strategic-value continuation or the holder's stated preferences. The plan is the apportionment, not the choice of any single path.

The Check on this site is not a concentration audit. It is shorter, six questions, scoped to the broader patterns of tax drag that show up across an investment portfolio. For holders sitting with the question this dispatch describes, the questions there are upstream of this one — they are about the rest of the portfolio, the costs that compound silently across positions that are not the concentrated one, and the planning footprint the entire household's tax picture leaves over the coming decade. The concentrated position is the loudest part of the picture. It is rarely the most expensive.