Chart: Billion-dollar companies are increasingly creating fewer jobs

Increasingly, big companies aren't adding jobs as fast as they are gaining in market value.

The big picture: The chart above looks at the average number of jobs per $1 billion in market cap for the 20 largest U.S. firms by market capitalization in recent years. This could be a harbinger of things to come, as adoption of artificial intelligence and automation further disconnects wealth creation and job creation.