Uber co-founder unloading his company holdings as stock tanks

Uber co-founder Travis Kalanick unloaded millions of dollars more of his shares this month after his share lockup ended on Nov. 6, bringing his total sale so far to more than $2.1 billion.

Kalanick is taking money off the table at a crucial time for the ride-sharing giant. With investors reeling, competition growing, and the company posting $1 billion in losses over the past three months, Uber still has yet to prove a consistent, positive business model.