Concentrated Stock Position: What to Know

Holding too much of a single stock can expose you to unnecessary risk. When a large share of your wealth is tied to one company or position, your portfolio becomes more vulnerable to outcomes you can’t control. Over time, this exposure can magnify the detrimental impact of market shifts or company-specific events on your overall financial situation.

In this article, we’ll examine how investors often end up with concentrated stock positions and the risks they can pose to a portfolio. We’ll also outline what you can do to manage concentration and explain how a large single-stock holding can fit or conflict with your financial plan.

What Is a Concentrated Stock Position?

As an investor, a concentrated position occurs when a single stock makes up a significant portion of your portfolio. Generally, holding anywhere from 5% to 20% or more can indicate a high concentration and expose you to the risks associated with it. At this point, the performance of one company, for better or worse, holds substantial influence over your entire portfolio.

Concentration within a portfolio often begins naturally and unintentionally. You may receive shares from your employer, invest early in a company that grew exponentially, or earn a windfall after an exit in the form of stock. For example, when Mark Cuban sold Broadcast.com to Yahoo, a significant portion of the deal was paid in Yahoo stock, temporarily leaving him with a highly concentrated position tied to a single company.

Why Holding a Concentrated Position Is Risky

Holding a concentrated stock position carries a bevy of risks to your portfolio. Chief among them are volatility, the chance of significant losses, and liquidity concerns. As concentration increases, these risks can become more difficult to manage within a broader financial plan.

Increased Volatility

When you hold too much of one stock, your portfolio’s performance becomes heavily dependent on that one company. The swings you might see on a normal day are felt even more because that stock represents a large portion of your net worth. This can make it harder to know where you stand or make long-term financial decisions.

For example, high volatility can become even more of an issue if you’re at or nearing retirement. During a time when you’d typically be focusing on preserving capital, experiencing heavy fluctuations can expose you to sequence-of-returns risk or decrease your liquidity (which we touch on below).

Risk of Substantial Loss

Depending on the performance of one company for a large portion of your portfolio also means you risk substantial or even devastating losses. Even strong companies have a risk of becoming much less valuable or going out of business entirely.

Tax and Liquidity Implications

Large stock positions tend to come with important tax considerations. Selling shares outside of a tax-advantaged account can trigger capital gains taxes and negatively impact your returns.

Tax concerns coupled with frequent volatility might simply disincentivize you from selling shares at a given time. At best, this impact on liquidity can be an inconvenience. At worst, however, it could put you in a tough position if you need the money right away for an emergency or big purchase.

Strategies to Manage a Concentrated Stock Position

While a concentrated stock position may be accidental, there are ways you can reduce or manage it to minimize your risk exposure. Some are more direct, while others are more nuanced and require additional expertise, like establishing a trust or diversifying the position. Below is a short breakdown of each method:

Selling Off Shares Gradually

Simply selling a portion of your shares is the most direct way to handle a concentrated stock position. This allows you to then keep the proceeds as cash or reinvest them via other securities, such as exchange-traded funds (ETFs) or mutual funds.

That said, selling is not always ideal at any given time. You run the risk of selling at a loss or, if doing so in a taxable account, incurring capital gains taxes. However, trading within a tax-advantaged account or offsetting losses via tax-loss harvesting (if trading in a taxable account) can work in your favor.

Gifting Your Position

Another option is to gift shares to family members or charitable organizations. Gifting appreciated stock reduces risk and tax exposure while supporting personal goals, such as estate planning.

It’s important, however, to understand the tax implications for the recipient. If a family member receives appreciated shares, they may owe capital gains taxes when the stock is sold. Donating shares to a qualified charity is another option and is generally deductible up to 30% of adjusted gross income in the year of the gift.

Tools such as donor-advised funds (DAFs) or charitable remainder trusts (CRTs) make it possible to support charitable giving while managing your tax exposure. These approaches can help you avoid an immediate capital gains tax while aligning the gift with your broader financial and philanthropic goals.

Keep But Diversify

In some cases, investors choose to retain a concentrated position while diversifying through other means. One example is contributing shares to an exchange fund, where investors pool concentrated positions and receive a diversified interest in return.

This approach can improve diversification without triggering capital gains taxes since the shares are not sold outright. If you decide to leave the fund after a seven-year holding period, it’s standard to get a package of securities rather than a cash payment.

How a Concentrated Position Fits Into Your Financial Plan

A concentrated stock position, while potentially troublesome, should not be viewed in isolation. Its impact and how you choose to manage it should tie directly to your goals, risk tolerance, and time horizon. What may be manageable for one investor could be more challenging for another.

For example, a large single-stock position can influence retirement planning by increasing volatility at an inopportune time or limiting predictable income. It can also affect tax planning decisions, particularly if selling shares would materially change income in a given year.

When it comes time to address a concentrated position, Matt Witter, CFP^®, CEP, ChFC^®, AIF^®, a financial advisor at Savant Wealth Management, notes that it’s often helpful to “shift the conversation away from the stock itself” and focus on “the overall financial plan.” Once both you and your advisor understand the role of the position in the context of your retirement goals or cash flow needs, it becomes possible to “implement phased, tax-aware diversification strategies, charitable planning techniques, structured selling programs, and disciplined rebalancing approaches.”