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 Get our FREE Newsletter! Discover Stocks with +1,000% Upside Potential! Thank you for subscribing. Something went wrong. Join over 100,000 investors and business leaders worldwide. Discover the Next Super Stock before the rest of the crowd. Your privacy is our priority. Your email address will never be sold or shared with anyone else.