Good afternoon. I hope you're having a safe start to any Christmas travels. Axios AM and PM will be running full speed next week.
Bitcoin had a wild day, dropping nearly $5,000 from its opening price before clawing back $3,500 of that decline by late afternoon.
The big picture: Bitcoin nearly hit $20,000 earlier this week. It was valued around $1,000 at the beginning of 2017.
A Facebook tool to show users whether they followed pages placed by Russian operatives in the 2016 election went live on Friday, Axios' David McCabe reports.
How it works: