ARIA

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Sector Allocation Calculator

See where your portfolio is really exposed — sector weights, your largest sector, and a concentration score.

Sector Weights

Your portfolio split across industry sectors

Concentration Score

HHI-based measure of sector concentration

Largest Sector

Spot the sector that dominates your exposure

Your Holdings
Tag each holding with a sector and its value. We roll them up into a sector breakdown and a concentration score.
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How Sector Allocation Works

The Formula

sector weight = sector value / total value
HHI = Σ (sector weight%)²

Sum the value in each sector, divide by the portfolio total for the weight, then square and add the weights for a concentration score. Lower HHI means a broader sector spread.

Diversification That Bites

A high holding count can hide sector concentration. Pairing this with your asset-class allocation and the correlation between holdings gives a fuller picture of real diversification.

Full Portfolio Analytics

Automatic sector classification

ARIA classifies your holdings into sectors automatically from live data and flags hidden concentration — no manual tagging, including the sector exposure buried inside your funds.

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Frequently Asked Questions