Permanently remove stock from Google Feed
Apparently I'm not the only one with this issue.

Lifehacker has an article about it.


  
  Open the Google feed.
  Swipe out the left-hand navigation panel.
  Tap Customize.
  Tap Stocks.
  Add the symbol for the stock you want to block.
  Tap the symbol you just added to your list.
  When it asks if you’re interested in the stock, tap No.
  
  
  It’s very confusing that you have to add a symbol to a list of stocks you do care about in order to block it, but for reasons that are unclear, Google doesn’t give you another option.


It is confusing. And dumb. But barring other options this is what I'll do.