KEY POINTS
  • Alphabet shares are up 24% this year, but the stock fell after hours Monday following disappointing revenue.
  • Ad sales growth is decelerating at Google. 
  • The company was hit with a $1.7 billion fine from the European Commission in the quarter.

Alphabet shares sank on Monday after Google's parent company reported revenue that fell below analyst estimates for its first-quarter 2019. The drop wiped more than $60 billion off Alphabet's market cap.

In premarket trading Tuesday, Alphabet's stock was down more than 7%.