Hide a story you see in ticker:

1. Click a story you see in ticker
2. Click the menu in the top right
3. Choose "Hide story"

Also, the hide and unsubscribe settings you use to control what you see in your news feed will impact what shows in ticker. For example, if you hide someone from your news feed entirely by unsubscribing from them, they won’t show up in ticker. This includes people you’ve already hidden. You might choose to only see "Important Only" or "Most Updates" from someone in your news feed, but don't want to unsubscribe from them entirely. In this case, ticker will show more from them than your news feed.

If you’re having a problem with ticker, please submit a bug report here.