Can someone explain this discrepancy to me?

[TradingTom]

I figured out the reason for this in one of my previous posts:

Issues with Pie holdings not matching investments tab

I worked this out and I have mentioned it before in the autoinvest feedback. It’s because you may have bought shares in a company, then also bought some in a pie. Then when you sell the shares manually, it uses the average price of both manually purchased and pie purchased shares, to work out the new return on investment. Whereas when you look at the investment from the pie, it only shows the return from those shares that the pie bought. That might be a terrible explanation but it’s what’s cau…