Comment by Lionsion

>> Hedge funds or services who analyze it for hedge funds is the big one. It's normal to track hundreds of millions of people a day and trade stocks based on where they go.

> Any articles/webpages about this one? Or a company name who is doing it?

Foursquare does it, there were some articles last year about how they pivoted to providing that data. They were able to accurately predict Chipotle customer declines after their food contamination scandals.

I'm not sure if they use this carrier location data, or just the data from the people who are still using their app.

Edit: here's one: https://www.washingtonpost.com/news/innovations/wp/2016/04/2...