Why Have Sirius XM Holdings Inc. Shares Climbed 26% in 2018? July 15, 2018 admin Trading Ideas Comments Off on Why Have Sirius XM Holdings Inc. Shares Climbed 26% in 2018? The company has fared will despite increasing competition. …read more Source:: Yahoo Finance Did you enjoy this article? Join our FREE Newsletter! Thank you for subscribing. Something went wrong. I agree to have my personal information transfered to MailChimp ( more information ) Join over 100,000 investors and business leaders worldwide. Get the latest actionable business and investing intelligence before the rest of the crowd.We hate spam. Your email address will not be sold or shared with anyone else.