How concentrated is your portfolio?

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Are you stuck with a concentrated position? This calculator might help.

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Position & portfolio

Position value

Total portfolio value

Cost basis

Acquisition date

Sector

Expected position return / yr

35%

Expected market return / yr

10%

Tax

State

Annual income

Filing status

67%

Highly concentratedLong-term

If 30% drop

−$150,000

If 50% drop

−$250,000

If 70% drop

−$350,000

Most fee-only advisors target ≤10% in any single name. You're at 67%.

Cost of fully de-concentrating

All three plans sell to 0% (no hedge).

Tax

Wealth (3y)$972,590

+$49,522 vs.

Tax

Wealth (3y)$1M

+$106,695 vs.

Tax

Wealth (3y)$1.1M

+$172,106 vs.

Wealth over time

Sell over 1 yearSell over 2 yearsSell over 3 yearsCustom

Build your own plan

Toggle each cell. Sell buttons show the slice — rebalances live.

Year 1

Year 2

Year 3

Tax$253,180

Hedge cost$38,908

Wealth at Y3$1,141,624

Vs. best fixed plan+$46,450

Tech / Software single names hit a 50%+ peak-to-trough drawdown in roughly 1 of every 5 rolling 3-year windows over 2014–2024. Even mega-caps aren’t exempt.

Tax brackets: 2026 · Estimates only — not financial advice.

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