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Most concentrated positions were never chosen. They accumulated, grant by grant or year by year, while somebody was busy doing good work.
That is what makes them difficult to address. It is not a bad decision you can identify and reverse. It is the residue of a good decision repeated many times, and the same conviction that built the position argues against unwinding it.
This article covers how to measure a concentrated position precisely, why most portfolios are less diversified than they look, and what actually reduces the risk. It is not an argument that you should sell everything. Concentration is how most significant wealth is built. It is simply a poor way to keep it.
Why concentration accumulates rather than being chosen
Two paths lead to the same place.
An executive receives equity as part of compensation. Each vesting event adds to a position that is already large, and each individual event is too small to feel like a decision. Over a decade the total becomes substantial without anyone ever having evaluated the total.
A founder reinvests profits into the business because the business is genuinely the highest-returning use of capital available to them. That is correct, right up until the point where nearly everything they own depends on one enterprise.
In both cases every individual step was rational. The aggregate was never assessed, because assessing the aggregate was nobody's job.
Why it is harder to unwind than it looks
- Loyalty. You may genuinely believe in the company, often with better information than outsiders have.
- Taxes. Selling can trigger a bill that feels like a penalty for having been right.
- Anchoring. If the position has fallen from a peak, selling feels like accepting a loss rather than managing a risk.
- Regret aversion. If you sell and it rises, you will feel that acutely. If you hold and it falls, that feels like circumstance rather than choice.
- Identity. For a founder especially, the business is not only an asset.
Naming these honestly matters, because a plan that ignores them will not survive the moment it was written for.
How to calculate the position, including the exposure that never appears on a statement
You cannot manage a risk you have never put a figure on, and most people carrying meaningful concentration have never written it down.
Be generous in what you include. The most common error is counting only the shares visible in a brokerage account.
- Vested shares held outright, at current value.
- Unvested restricted stock, at a reasonable estimate.
- Options, at intrinsic value based on today's price.
- Employer stock held inside a 401(k) or other retirement account.
- Employee stock purchase plan holdings.
- Any deferred compensation tied to company performance.
Add those together, then divide by your total investable net worth excluding your primary residence. That percentage is your direct exposure.

The line almost everyone omits
Now add the item that arrives in no statement anywhere: your salary, your bonus, and your job security all depend on the same entity.
In financial terms, your employment is a substantial undiversified position in that company. It simply is not priced daily, so it goes uncounted. For a senior executive, the combined figure of investments plus income dependence is frequently well over half of everything they have.
For a business owner the calculation is simpler and the answer usually starker. Estimate the enterprise value, add any real estate or notes tied to it, and divide by total net worth. For most owners the figure exceeds eighty percent, and the business is also the source of current income.
You cannot manage a risk you have never put a figure on. Most people carrying real concentration have never written it down.
What counts as too much, and why there is no universal threshold
There is no magic number, and anyone stating one confidently is telling you about their marketing rather than your situation.
A commonly discussed rule of thumb treats more than ten to twenty percent of investable net worth in a single position as concentration worth examining. Treat that as a prompt for a conversation, not a limit. For business owners it is routinely far higher, and that is not automatically wrong.
Several questions do more work than any threshold:
- What would this position have to fall by before it materially changed your life? Twenty percent? Fifty? Seventy?
- Could you fund three years of expenses if the position halved and your income stopped at the same time?
- If you inherited this portfolio today, with no history and no loyalty attached, how much of it would you choose to hold?
That last question is the most useful one available. It strips out the anchoring and the sunk history and asks what a clear-eyed stranger would do with the same assets. Most people answer a considerably lower number than they currently hold.
Why a portfolio of many holdings is often still one bet
Even investors who have addressed single-stock concentration are frequently less diversified than they believe, because diversification is not about how many things you own. It is about whether they respond differently to the same event.
Everyone owns the same index
A broad market index fund is genuinely spread across hundreds of companies and it is an excellent core holding. The catch is not inside the fund. It is that an enormous share of the investing public owns the same one, so when sentiment turns it all moves together.
There is a second wrinkle. The largest indexes have become heavily weighted toward a handful of very large companies, so buying the whole market can quietly mean a substantial bet on a few names.
When the halves move together
In 2022, US stocks and the Bloomberg US Aggregate Bond Index both fell, with the Aggregate posting its worst annual result in roughly five decades. Both halves of the classic balanced portfolio reacted to the same shock, rising rates, in the same direction.
Callan's analysis of returns dating back to 1926 found 37 quarters in which stocks and bonds were both negative, just under 10 percent of all quarters in that period. So the pattern is not unprecedented. It is simply more common than a two-asset portfolio implicitly assumes.
Sixty holdings and one bond fund can still be two bets that a single event knocks down together.
Diversifying from your paycheck, not just from your other investments
This is the form of concentration that almost never gets addressed, and it is frequently the most consequential.
If your career and your investments depend on the same industry, a downturn does not arrive once. It compresses the bonus, threatens the role, and depresses the portfolio in the same quarter. The damaging version is being required to sell investments while they are down precisely because income fell at the same time.
The trap inside familiar advice
Buy what you know is largely sound guidance with an edge that rarely gets mentioned. The things you understand best are usually the things you are already exposed to. A technology executive who buys what they know adds technology equities on top of a technology salary, technology grants, and a technology-weighted retirement account. Familiarity quietly becomes concentration.
The remedy is not to invest in things you do not understand. It is to check whether what you know is simply another layer on the same bet, and to deliberately own some things driven by different forces than your career.
Where diversifying capital can actually go
If the aim is genuine diversification rather than motion, the useful filter is what drives the asset's return. Moving from one technology stock into a technology-heavy index fund changes the ticker without changing the exposure.
- Publicly traded REITs add real estate exposure with daily liquidity, and continue to trade with broad equity market sentiment, so they help less than the label suggests.
- Private credit produces contractual income from lending rather than ownership, driven by borrower performance rather than by equity markets.
- Private real estate funds provide pooled exposure to rent-driven income with a multi-year commitment.
- Real estate syndications provide fractional ownership of a specific property in a named market, where the drivers are local employment and household formation rather than any single industry cycle.
Each of these carries a different liquidity profile, and that leads directly to the constraint that should govern the decision.
Right-sizing your liquidity
Ask honestly how much of your wealth needs to be sellable tomorrow. An emergency reserve and known near-term needs genuinely do. Beyond that, many people keep everything liquid out of habit rather than need, and readily-sold assets frequently accept a lower return in exchange for that convenience.
Whatever the destination, capital that might be required within a few years should not go anywhere illiquid, regardless of how well it screens on every other measure.
What to do with this
Two steps, neither of which commits you to selling anything.
- Calculate the real number this month, including the employment exposure that appears on no statement. Write it down and date it.
- Then answer the inherited-portfolio question honestly: if you received these assets today with no history attached, how much would you keep?
The gap between those two figures is the decision, and having it in front of you converts a vague unease into something you can act on at your own pace.
Read the guide
Crystal Peak Capital publishes a series of investor guides covering the questions accredited investors actually ask, with our own reasoning shown rather than asserted. They sit in the resource library available to Investor Club members. Membership is free and takes about a minute, and members can open the library from the link in their welcome email. There is no obligation and no timeline attached.
FAQ
How much of my net worth in one stock is too much?
There is no universal threshold. A commonly discussed rule of thumb treats more than ten to twenty percent of investable net worth in a single position as worth examining, but that is a prompt rather than a limit, and for business owners the figure is routinely far higher.
Does my salary count as part of my concentration?
In financial terms, yes. Your salary, bonus, and job security all depend on the same entity as your employer shares. It is a substantial undiversified position that is simply not priced daily, which is why it goes uncounted in most calculations.
Isn't an index fund already diversified?
A broad index fund is genuinely spread across hundreds of companies and is an excellent core holding. The limitation is that a large share of investors own the same one, and the largest indexes are heavily weighted toward a handful of very large companies, so it may correlate more closely with your other holdings than expected.
Did stocks and bonds ever fall together?
Yes. In 2022 US stocks and the Bloomberg US Aggregate Bond Index both fell, with the Aggregate posting its worst annual result in roughly five decades. Callan's analysis of data back to 1926 found 37 quarters in which both were negative, just under 10 percent of all quarters examined.
Sources cited in this article
- Callan Institute analysis of quarterly stock and bond returns using data from 1926, identifying 37 quarters with both negative. Verify before publishing.
- S&P Dow Jones Indices and Bloomberg index factsheets for 2022 calendar-year total returns. Obtain exact figures from the index providers before publishing.
Important Disclosure:
This website is for informational and educational purposes only and does not constitute an offer to sell or a solicitation of an offer to buy any securities. Any securities offerings by Crystal Peak Capital are conducted pursuant to Regulation D, Rule 506(c) of the Securities Act of 1933 and are available only to verified accredited investors.
All investments involve risk, including possible loss of principal. Past performance is not indicative of future results. Prospective investors should consult their own legal, tax, and financial advisors before investing.
