KEY POINTS
  • Facebook shares fell 4 percent at market open on Friday after it announced major changes to its News Feed
  • Facebook CEO Mark Zuckerberg said that the News Feed will start prioritizing "meaningful social interactions" versus "relevant content"
  • Users are likely to see fewer posts from businesses and publishers.

Facebook shares fell 4 percent Friday morning after it announced major changes to its News Feed Thursday night.

Shares fell as much as 6.1 percent ahead of the market open, after closing just below the flatline on Thursday.