If your custom feed is looking sparse, it may be that articles about your topic(s) aren't being shared quickly enough to be considered "trending."

However, that doesn't mean that they don't exist! 

Try searching for your topic in Most Shared and filter by date - "24 Hours" or "Past Week."

Most Shared will display a list of articles for your topic that have driven engagement over that time period - no matter how fast that engagement happened.

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