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Why doesn't the performance of a category match the funds it's made of?

Understand the difference between the performance of a single fund and that of the full category it belongs to.

Written by Laurène Soubrier

In your portfolio, you can see:

  • the performance of an investment category (e.g. “International Companies”), and

  • the current performance of the individual funds that make up that category.

Sometimes, it might seem confusing. For example, the category shows –2%, but both funds inside it show +5%. Is that a bug?

☝️ No, that's entirely possible! Here's why.

Why is there a difference?

This is because:

  1. A category can include several funds over time.
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    Selma may replace or rebalance certain products within a category as time goes by. Funds that were replaced are still included in the category performance, but not shown individually anymore.
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  2. The performance of a category reflects the full history of all the funds that were ever included in it, even if they're no longer visible.
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    In other words, the calculation includes how older products performed while they were part of the category.
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  3. The individual performances shown only reflect the funds that are currently in your portfolio.
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    They don't include the historical impact of past funds, even if those had a strong (positive or negative) performance.

A real-life example

For a given category:

  • 2022–2023: Fund A → –15% (no longer in your portfolio)

  • 2024–2025: Fund B & C → each +5%

Result:

  • Visible funds today: +5% each

  • Category performance (incl. past loss from Fund A): –5%

In short

  • The category performance shows the full investment journey since your portfolio started, including past funds and shares that have been sold.

  • The visible funds show only their own performance over a shorter period.

So it's totally normal to see a difference between the two. ✅


📘 Want to dig deeper? Check out our article on how Selma calculates returns.

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