ISA diversification

Portfolio diversification calculator

See whether a Stocks & Shares ISA is genuinely diversified by company, fund overlap, sector and geography. The point is not to chase a perfect score; it is to make hidden concentration visible before you add more money.

Check my diversification

What the free check can show

Large direct holdings and funds that still need overlap data.
Sector or geography concentration that deserves review.
Holdings that need stronger coverage before precise analysis.

What the full X-Ray adds

Look-through company exposure across supported holdings.
Weighted fund fee estimate where data is available.
Downloadable evidence and what-if comparison.

Built for UK ISA investors

The workflow assumes GBP values, UK-listed funds where possible and common ISA review questions. It does not provide personal financial advice or tell you which investment to choose.