how does cnbc/cable news pick what stock go across their ticker?

a family memeber asked me this question the other day while I was watching cnbc at home and i realized i have no idea. Is it as simple as "stuff that is in the news or up and down a good bit"? Or are there more specific critieria ?? do large businesses desire or maybe even pay for their symbol to go across more often???

just wondering ..............
 
Back
Top