Tools · Risk

Portfolio Concentration Check

Check whether your portfolio is more concentrated than it looks. Enter your biggest position, how much of your portfolio overlaps in similar sectors or themes, and how likely your holdings are to move together in a selloff. The tool gives you a simple score, an exposure estimate, and a basic risk cue.

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Score
--%
Exposure
Context

Why this matters

  • A portfolio can look diversified and still carry too much risk.
  • If one position is too large, one bad event can hurt the whole portfolio.
  • If several holdings are in the same sector or theme, they may act like one trade.
  • In market selloffs, different stocks often start moving down together.
  • This is a quick risk check, not a full portfolio analysis.
  • It is most useful before adding more size.
Calculator

Inputs

Portfolio score
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One-event risk
--%
This estimates how much one bad event could affect the portfolio.
Suggested next step
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A simple risk nudge, not a buy or sell signal.
Beginner guide: what this tool checks

What this tool is for
This tool checks whether your portfolio is too dependent on one stock, one sector, or one market theme.

How to use the inputs
Largest position: the percentage of your portfolio in your biggest holding.
Sector / Theme Overlap: how much of your portfolio is in similar sectors, themes, or trades.
Chance They Drop Together: how likely your holdings are to fall together in a weak market.

How to read the score
80 to 100: reasonably diversified for most conditions.
55 to 79: acceptable in calm markets, but risk can rise quickly in a selloff.
Below 55: too much risk may be coming from concentration or overlap.

What this tool does not do
It does not connect to your brokerage, calculate exact correlations, or replace a full portfolio review. It is a fast common-sense screen.

Educational use only. This is a quick risk screen, not financial advice or a full portfolio review.