I don't understand the pie return discrepancy in the overview

I created a pie today where I’ve put 25 different stocks. I’ve invested 435 pounds in it. One hour later, I checked the app, and I see that the value of the pie is up 1.05 pounds (0.2%). I thought this was perfectly normal since it’s only been an hour. And if you divide 1.05 in 436.05, yes, you get 0.2%.

lklk

But then I go back to the overview and it says that the return is up by 81.37:

photo_2026-05-18_15-24-26

This make no sense at all. This value is clearly fake. 436.03 minus 81.37 gives you 354.66. That’s not the amount I invested initially. As I said at the beginning of the post, the initial investment was 435.

So from all of this I can conclude that the return of the first picture is the real one, and the one that appears in the overview is fake. But what is this ā€œfake returnā€ indicating? What info is this supposed to give me?

The overview is at total fund level, it aggregates your positions so gives an average return.

I have the same with pies to segregate funds with the same assets.

I get what’s happening now. In the recently created pie, I’ve bought stocks of companies that I already had outside the pie for a long time. For example, I’ve had Palantir for 2 years as a stock (not in a pie), and in my new pie, one of the things I bought was Palantir. That’s why I instantly saw inmense gains in my new pie, because Trading212 is mixing together all the stocks of the same company you have inside and outside the pie, giving me these weird numbers.

In my opinion this shouldn’t work like that, but whatever…

Anyway, at least, if I click on the pie I can see the real return, but I’m annoyed that in my overview list of stocks everything is getting mixed now with stocks that I already had.