Your Company Stock Tripled: A Framework for What to Do Next

The Emotional Trap You Are Already In

Your company stock tripled. You watched colleagues sell early and miss the run. You feel vindicated, loyal, and convinced the best is still ahead. This is exactly when concentration risk becomes most dangerous, because you are least likely to do anything about it.

This is not speculation. It is a pattern that repeats across every market cycle. Every employee at Cisco in March 2000 felt this way. Cisco stock dropped 86% over the next two years and has never returned to its peak. Peloton employees in late 2020 watched their shares climb above $160 and held on. The stock fell below $8. Meta employees in September 2021 held through a 76% decline into late 2022. In each case, the employees closest to the company were the most confident and the last to sell.

The problem is not that your company is bad. The problem is that conviction and concentration are a dangerous combination. Your analysis of the company may be correct. The stock may continue to rise. But the question is not whether you believe in the company. The question is whether you can afford to be wrong.

Quantify Your Actual Concentration

Before making any decision, calculate exactly where you stand. Add up every asset you own and determine what percentage is in a single stock. Include:

• Vested shares at current market value
• Unvested RSUs at current market value (discount these by 20 to 30% to account for departure risk and time)
• Vested stock options at current intrinsic value (market price minus strike price)
• ESPP shares you have not yet sold
• 401(k) or brokerage holdings in company stock

Now divide by your total net worth.

Below 10%: manageable concentration. Monitor but no urgency.

10 to 20%: elevated but within range for employees at high conviction companies. Have a written plan.

20 to 50%: meaningful concentration risk. Begin systematic diversification immediately.

Above 50%: portfolio emergency. This is not a figure of speech. More than half your financial future depends on a single board of directors, a single CEO, and a single set of market conditions.

Most employees who have watched their stock triple are somewhere between 50% and 85% concentrated. They do not realize it because they mentally separate their "investments" from their "equity comp." It is all one portfolio.

The Correlation Problem Most People Ignore

Concentration risk is worse than it appears on paper because of a factor most employees overlook: your human capital is already a concentrated bet on this company.

Your salary comes from the company. Your health insurance comes from the company. Your unvested equity depends on continued employment at the company. Your future equity grants depend on the company's willingness to issue new RSUs. Your professional network is disproportionately tied to the company.

If the stock drops 70%, three things happen simultaneously:

1. Your portfolio loses 70% of its largest position
2. The company likely announces layoffs, putting your salary at risk
3. Your unvested grants become worth a fraction of what you expected

This is the opposite of diversification. A diversified portfolio means that when one thing goes wrong, other assets provide stability. When your entire financial life is tied to one entity, a single bad quarter can damage your wealth, your income, and your career prospects at the same time.

A Systematic Diversification Plan

The solution is mechanical, not emotional. Set a fixed percentage of vested shares to sell every quarter and execute regardless of price movement or your feelings about the company.

Recommended pace: sell 10 to 25% of your vested shares per quarter. At 15% per quarter, you will have diversified the majority of your position within two years while still participating in further upside.

Automate with a 10b5-1 plan if you are subject to trading windows (most employees at director level and above, plus many engineers at senior levels). A 10b5-1 plan is a written instruction to your broker to sell a predetermined number of shares at predetermined intervals. Once established, trades execute automatically, even during blackout periods. This removes emotion entirely and provides legal protection against insider trading claims.

The key insight: you are not making a bet against the company by diversifying. You are making a bet in favor of your overall financial resilience. The best time to diversify is when you do not feel like you need to.

Tax Efficient Diversification

Selling concentrated stock creates a tax bill. Smart execution minimizes it.

Sell highest cost basis lots first. Every share you own has a specific cost basis (the price at which it was valued for tax purposes when it vested or was purchased). Selling shares with the highest cost basis produces the smallest capital gain and the lowest tax bill. Your broker can execute specific lot identification if you instruct them before the sale.

Harvest losses in the diversified portfolio. As you build a diversified portfolio with the proceeds, some positions will decline. Selling those at a loss generates capital losses that offset your gains from selling company stock. Net effect: lower total tax bill.

Donate appreciated shares to a donor advised fund. If you have charitable giving goals, donating shares with the lowest cost basis (largest unrealized gain) eliminates the capital gains tax entirely while providing a full fair market value deduction. A $100,000 donation of shares with a $20,000 cost basis saves roughly $19,000 in capital gains tax compared to selling, paying tax, and donating cash.

Consider exchange funds for positions above $1M. An exchange fund pools concentrated stock from multiple investors into a diversified portfolio. You contribute your concentrated shares and receive a proportional interest in the diversified fund. No taxable event occurs at contribution. Minimum investment is typically $1M, and there is a seven year lockup period. This is specialized but powerful for very large positions.

Concrete Scenario: From 81% to 32% Over Three Years

Consider an engineer with the following portfolio:

The plan: sell $200,000 of company stock per quarter for 12 quarters (three years). After federal and state long term capital gains taxes (approximately 23.8% federal plus state), each $200,000 sale on shares with an average cost basis of roughly $53,000 nets approximately $165,000 in proceeds. These proceeds go directly into a diversified portfolio of index funds.

After three years (assuming flat stock price for simplicity):

Total net worth decreased by roughly $120,000 due to taxes paid. But concentration dropped from 81% to 17%. If the stock subsequently falls 70%, this portfolio loses $420,000 instead of $2,100,000. The $120,000 in taxes bought $1,680,000 in downside protection. That is a 14:1 return on the cost of diversification.

What About the Tax Bill?

This is the most common objection, and it misses the point entirely.

Yes, selling triggers capital gains taxes. At the federal long term rate of 23.8% (20% capital gains plus 3.8% net investment income tax), plus state taxes in California or New York, you may pay 30 to 35% on the gain. That feels like a large number.

But consider what you are actually comparing. You are weighing a certain 30 to 35% tax on the gain against the possibility of a 50 to 70% decline in the stock. The tax is a known, fixed cost. The decline is an uncertain but historically common event. You are not avoiding taxes by holding. You are making an implicit bet that the stock will outperform a diversified portfolio by enough to overcome the tax drag. That bet requires the stock to significantly outperform, and it requires you to eventually sell anyway (triggering taxes at that point, potentially at a lower price).

Paying taxes on gains is not losing money. It is locking in profits.

When Holding May Be the Right Call

Diversification is the default, but there are narrow exceptions:

• The position is below 10% of net worth. Concentration risk is manageable, and transaction costs or tax drag may not be worth the benefit.
• You have a specific, written exit plan. Not "I'll sell when it feels right." A written target price, a written date, and a commitment to execute. If you cannot write it down, you do not have a plan.
• QSBS holding period requirements. If your shares qualify for Section 1202 exclusion (up to $10M or 10x basis in capital gains excluded from tax), and you are within months of meeting the five year holding period, the tax savings justify holding through the concentration risk.
• You have genuine, material, nonpublic information about an upcoming catalyst. Be extremely careful here. If you are trading on inside information, you are committing a federal crime. If you simply believe the next quarter will be strong based on what you see at work, that is a feeling, not a strategy.

In every other situation, systematic diversification is the correct framework. The stock tripling was the good outcome. Now protect it.