Are we in a tech bubble about to burst? Facebook bought WhatsApp for $19 billion earlier this year. WhatsApp CEO Jan Koum speaks during a conference at the Mobile World Congress 2014 in Spain. David Ramos/Getty Images hide caption

toggle caption David Ramos/Getty Images

Silicon Valley Buying Spree: A Tech Bubble, Or Strategy At Play?

  • Download
  • <iframe src="https://www.npr.org/player/embed/300258442/300282916" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript