Mark Zuckerberg's testimony seems to be pushing up the value of Facebook shares.

The founder of the social media website has been answering questions from US lawmakers about how it handles people's information.

It follows the release of thousands of users' data to Cambridge Analytica for political purposes during the US election.

JMIS analyst Andrew Kelleher told Mike Hosking Facebook's share price rallied 4.5% during the testimony yesterday.

"So that's added $21.3 billion on the value of the company. Mark Zuckerberg's testimony also pushed up his net worth up by $3 billion."

Andrew Kelleher says at the moment, the shares market seems to be reacting positively to the way Mark Zuckerberg is presenting.

LISTEN TO THE FULL INTERVIEW WITH MIKE HOSKING ABOVE