Duplicate iOS Notifications

I seem to have a random bug on my iPhone (Xs Max) where I always get duplicate notifications (see the 2 x dividends, but 4 x notifications from my lock-screen). Has anyone else had this issue?

I’ve tried deleting and reinstalling the app but can’t work it out. It’s not a major issue, so I’m not too concerned, it’s just a bit weird.

Any suggestions?