I sold nvdia stock at $522 but the price ticker never went that high, what’s going on?

I used fidelity and the price said about $508-511 and just said fuk it, I’m
Sure it’ll go that high eventually and did a limit order at $522, and about a few minutes my stocks sold at $522. Looking at price history the max was $511.
I did it after hours.

So I’m trying to understand why it sold. Normally it doesn’t. Does fidelity (sometimes) buys them thinking it will go up and later sell them to other fidelity users later?

Was it a fluke? Or the price ticker was being calculated by average so that one sale wasn’t counted?