How to get rid of the stocks app from spotlight? I run OS running on german - there the stocks app ("Aktien") clashes with the activity monitor ("Aktivitätsanzeite").

I prefer to launch apps via spotlight.  Often just a millisecond before I press enter a new suggestion jumps to the top of the list and is launched instead. 

Suppose something uses up all CPU and I want to investigate by activity monitor (german: Aktivitätsanzeite). I start typing "Akti" - see the correct App (top suggestion) and hit enter - but (half the time?) "Aktien" (the stocks app) pops up and jumps the top of the list - and I end up in the setup for the stocks app.  Very annoying if something else already grinds your system down. 

I have a similar issue with other apps - but not as annoying as I can just delete the unwanted ones
I experimented using the "original" name - but it is a guessing game as the only way to figure the name out is to guess the name (it's nowhere mentioned in the apps).
If you do not want an app showing in Spotlight you can add it to the Privacy tab in: System Preferences > Spotlight > Privacy

You can add by clicking [+], or drag a folder, disk or app into the list section.