Multiple iphone notifications

I follow a bunch of stocks so I routinely get 10-15 notifications on my phone.  There may be 3-4 that I want to look at etc...  If I click on 1 of the notifications to look at that article all the rest are removed as well.  Other apps that I have that have multiple notifications only remove the one I click on.  Seeking Alpha removes all my SA notifications if I click on just one of them.  I'm hoping that can be resolved.