A stylized financial illustration showing how one successful company investment can become too large relative to the rest of a retirement portfolio.
A successful career at one company can create meaningful financial security. Over time, salary, bonuses, stock awards, and retirement-plan contributions may all be connected to the same employer.
That connection can become a source of vulnerability when a large portion of your wealth is tied to one company’s stock.
The issue is not that the company is necessarily poorly managed or that the stock cannot continue to perform well. The issue is that your employment, income, and investment portfolio may all depend on the same outcome. Near retirement, that connection deserves a careful review.
What is concentrated stock exposure?
A concentrated stock position exists when one company represents a large share of your investment portfolio or overall net worth.
This exposure may come from:
- Employer stock held in a 401(k) or other retirement plan
- Restricted stock units or stock options
- Shares purchased through an employee stock program
- A taxable brokerage account built around one long-held investment
- A business owner’s exposure to the company they operate
- A broad fund that also holds a significant position in the same company
Concentration can develop intentionally, but it can also happen gradually. A position that began as a modest part of your portfolio may become much larger after years of appreciation.
The Financial Industry Regulatory Authority’s guidance on concentration risk identifies company stock concentration, asset performance, correlated investments, and illiquid holdings as common sources of portfolio risk.
Why employer stock creates a special risk
Owning stock in your employer can create two overlapping risks.
The first is investment risk. If the company experiences weak earnings, a regulatory problem, an industry downturn, or another setback, the stock price may decline.
The second is employment risk. The same business conditions that hurt the stock may also affect your compensation, job security, bonus opportunities, or retirement benefits.
This creates a form of correlation between your financial life and your investment portfolio. If the company struggles, you may face a decline in both current income and accumulated wealth at the same time.
That possibility does not mean employer stock should never be owned. It means the position should be evaluated as part of your complete financial picture rather than viewed in isolation.
Diversification is more than owning several accounts
Diversification means spreading investments across different assets, companies, sectors, and geographic areas so that one investment does not determine the outcome of the entire portfolio.
However, owning several accounts does not necessarily create diversification. For example, an investor might hold:
- Employer stock in a 401(k)
- A technology fund in an IRA
- A broad stock-market fund in a taxable account
- Additional company shares received through equity compensation
Those accounts may look separate on statements, but they can still have significant exposure to the same company or industry.
The SEC’s Investor.gov explanation of asset allocation and diversification emphasizes that diversification should take place both between asset classes and within them. Investors should consider how much they hold in stocks, bonds, and cash, as well as how their stock holdings are distributed across companies and sectors.
A complete review should therefore look across the household’s entire portfolio, not just at one account.
An editorial balance-scale illustration showing why position size matters when one company becomes a large part of a portfolio.
Position sizing: How large is too large?
There is no universal regulatory percentage that determines when a single stock becomes inappropriate for every investor. The right level depends on your goals, time horizon, income sources, liquidity, and ability to withstand losses.
Still, position sizing is an important risk-management decision. A position is not only a dollar amount. It is also a percentage of your total investable assets and a measure of how much a decline could affect your retirement plan.
Consider asking:
- What percentage of our investable assets is in one company?
- What percentage of our total net worth is connected to that company?
- Does the company stock overlap with funds we already own?
- How much of our future income depends on the same employer?
- What would happen to our retirement plan if the position declined substantially?
- Would a large decline change when we retire or how much we spend?
A position may be too large when a severe decline would force you to delay retirement, reduce essential spending, sell other investments at an unfavorable time, or rely more heavily on employment income.
The goal is not to identify a perfect number. The goal is to establish a position size that is consistent with the household’s broader financial capacity.
Risk tolerance is not the same as risk capacity
Risk tolerance is your willingness to experience investment losses. Risk capacity is your financial ability to absorb those losses without disrupting important goals.
These are different.
An investor may be emotionally comfortable owning a large amount of employer stock because they understand the company and believe strongly in its future. But if that investor is within two years of retirement and needs the portfolio to fund essential expenses, their risk capacity may be limited.
Risk capacity can be affected by:
- How soon retirement begins
- The amount of reliable income available
- Essential versus discretionary spending
- Emergency savings
- Debt obligations
- Healthcare and family-support needs
- The flexibility to continue working
- The liquidity of the portfolio
A concentrated position may be more manageable for someone with substantial outside assets, flexible spending, and many years before retirement. The same position may be much more consequential for a household that depends on the portfolio for near-term income.
Liquidity matters when retirement is approaching
Liquidity refers to how easily an investment can be sold and converted into cash. Publicly traded employer stock is generally more liquid than private company shares, but liquidity is not the same as safety.
A stock may be easy to sell while still experiencing a sharp decline in value. In addition, employees and company insiders may face trading windows, blackout periods, or other restrictions.
Near retirement, it is important to understand:
- When shares can be sold
- Whether company rules limit transactions
- How much cash is available outside the concentrated position
- Which assets could fund near-term expenses
- Whether a market decline could force a sale
- Whether the portfolio has enough flexibility to support withdrawals
Liquidity planning can reduce the pressure to make an investment decision during an emotionally difficult or financially unfavorable period.
An editorial roadmap illustrating the relationship between liquidity, diversification, and resilience in retirement planning.
Why reducing a winning position can feel so difficult
Selling a successful investment can feel different from selling one that has performed poorly. A winning position may represent years of work, loyalty to an employer, or a belief that the best part of the opportunity is still ahead.
Investors may also experience:
- Regret about selling too early
- Fear of missing additional gains
- A strong emotional connection to the company
- Overconfidence based on past performance
- The belief that the stock is safer because it has already done well
- Difficulty separating personal success from the company’s future prospects
These reactions are understandable. But past performance does not remove the risks associated with future concentration.
A useful way to reframe the decision is to ask: “If I received this amount of cash today, would I choose to invest all of it in this one company?”
That question can help separate the original purchase decision from the current portfolio decision.
Diversification does not require a negative view of the company. It can simply reflect the principle that retirement security should not depend too heavily on one business.
An editorial illustration of the emotional difficulty involved in reducing a successful single-stock position.
A practical review framework
A concentrated employer-stock review can begin with five steps:
Measure the exposure
Add the shares held in retirement accounts, taxable accounts, equity-compensation accounts, and other household investments.Review the underlying holdings
Look inside mutual funds and exchange-traded funds for overlapping exposure to the same company or sector.Separate essential and flexible goals
Determine which assets support basic retirement expenses and which are available for discretionary goals.Stress-test the position
Consider how a significant decline could affect retirement timing, withdrawals, spending, and family responsibilities.Create a written risk-management policy
Establish how the position will be monitored, what circumstances will trigger a review, and how new compensation will be allocated.
This framework is not a recommendation to buy or sell any particular investment. It is a way to make the risk visible before making decisions.
Employer-plan rules, trading restrictions, and general tax considerations can also affect the available choices. The IRS discussion of employer securities in Publication 575 provides high-level information about rules that may apply in certain retirement-plan distributions. Because tax treatment depends on individual facts and circumstances, readers should consult an appropriately qualified tax professional with questions about their own situation before taking action.
The key takeaway
The stock that helped create your wealth may no longer serve the same role in your retirement plan.
As retirement approaches, the question is not simply whether the company is strong or whether the stock has performed well. The more important question is whether your employment, income, and portfolio are too dependent on the same outcome.
A thoughtful review of diversification, position sizing, liquidity, and risk capacity can help you evaluate that exposure with greater clarity.
For a broader discussion of portfolio construction and risk management, visit Portafolio Capital Management’s investment strategy page and risk analysis page.
If you would like to discuss how concentrated stock exposure fits into your broader retirement plan, schedule a conversation with Portafolio Capital Management dba Mau Sanchez Capital or call (512) 593-8380. A fiduciary adviser can help you organize the questions, risks, and tradeoffs without assuming that one solution fits every household.
Sources
- FINRA, “Concentrate on Concentration Risk,” June 15, 2022
- U.S. Securities and Exchange Commission, Investor.gov, “Asset Allocation and Diversification”
- Internal Revenue Service, Publication 575, “Pension and Annuity Income,” 2025, referenced for employer securities distribution rules
Portafolio Capital Management LLC dba Mau Sanchez Capital is a Texas-registered investment adviser. This content is provided for informational and educational purposes only and does not constitute personalized investment advice, tax advice, legal advice, or a solicitation to buy or sell any security. Investing involves risk, including the possible loss of principal. Advisory services are provided only pursuant to a written advisory agreement. Past performance is not indicative of future results.
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