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Company Stock Concentration Calculator | Falcon Wealth Planning

How Much of Your Wealth Is Invested in One Stock?

Divide the current value of your company stock by your total investable assets. A larger percentage means one company’s performance can have a greater effect on your financial plan, but there is no universal percentage that is appropriate for everyone.

Measure Your Company-Stock Exposure

Enter the value of your company stock and other investable assets.

Concentration Risk Analyzer — Falcon Wealth Planning

Your position

Use current market values. "Everything else" = other investments, cash, home equity you'd count.
$
$
60%
0%
Single-stock concentration
60%
High concentration
0%10% low25% moderate100%

What the numbers say

Total net worth (counted)$2,000,000
In this one stock$1,200,000
Estimated portfolio loss from 60% drop−$720,000
Net worth after that drop$1,280,000
Concentration if you trim 0%60%

Trimming, staged

Sell 25% of the position → concentration45%
Sell 50% → concentration30%
Sell 75% → concentration15%

What Is Concentration Risk?

Concentration risk is the possibility of amplified losses because a substantial portion of a portfolio depends on one investment, company, industry, or market segment.

This may be especially important for employees whose:

A company setback could therefore affect both employment income and investment wealth at the same time.

FINRA explains that company-stock concentration can arise intentionally, through employee compensation, or because one investment has significantly outperformed the rest of the portfolio. FINRA

What Percentage in One Stock Is Too Much?

There is no universal percentage that makes a position automatically appropriate or inappropriate.

The answer depends on:

Any risk labels shown by the calculator should be treated as educational illustrations, not personalized recommendations or regulatory thresholds.

What Could Happen if the Stock Declines?

Suppose company stock represents 40% of an investable portfolio. If that stock declines by 50% while all other assets remain unchanged, the total portfolio would decline by approximately 20%.

40% portfolio exposure × 50% stock decline = 20% estimated portfolio decline

This simplified stress test does not predict what the stock will do. It shows how sensitive the portfolio may be to one company’s performance.

Should You Sell Company Stock to Diversify?

Not automatically. Selling can reduce concentration, but the decision may also involve:

The IRS generally uses adjusted basis to determine gain or loss when stock is sold. The correct basis depends on how the shares were acquired. IRS Basis Guidance

How Does Falcon Evaluate Concentrated Stock?

Falcon Wealth Planning considers five connected decisions:

Measure

How much of your investments and broader financial life depend on the company?

Stress test

What could different company-stock declines do to your goals?

Taxes

What gains, equity-compensation taxes, or other tax consequences could a sale create?

Timing

Should exposure be reduced immediately, gradually, or around specific liquidity events?

Reinvestment

How should the proceeds support retirement, cash needs, diversification, or other goals?

Falcon can compare multiple strategies instead of treating one concentration percentage as the answer.

What Does This Calculator Leave Out?

This estimate may not account for:

Frequently Asked Questions

Not necessarily. There is no universal limit. The appropriate amount depends on your financial position, employment exposure, taxes, objectives, time horizon, and ability to tolerate losses.

They should be displayed separately. Unvested RSUs may increase future company exposure, but they can be forfeited and are not currently owned investment assets.

No. Diversification may reduce the effect of poor performance from one security, but diversified investments can still decline. Investor.gov

Not automatically. An all-at-once sale could reduce concentration quickly but may create taxes, sacrifice potential growth, or conflict with trading and liquidity restrictions. A gradual strategy may also carry risk because the stock remains concentrated longer.

Educational estimate only. This calculator uses simplified assumptions and does not provide individualized investment, tax, or legal advice. Actual results may differ because of market movements, taxes, cost basis, equity type, liquidity, trading restrictions, and personal circumstances. Consult qualified professionals before buying, retaining, or selling company stock.

Turn Your Financial Independence Number Into a Plan

Falcon Wealth Planning can help evaluate your spending, taxes, investment strategy, reliable income, withdrawal approach, and the risks that could affect your timeline.