Warren Buffett’s Berkshire Hathaway Inc. (NYSE:BRK) has made a significant investment in Liberty SiriusXM Group (NASDAQ:LSXMA), the parent company of SiriusXM Radio and other media assets. What Happened: Berkshire Hathaway has acquired $116.58 million worth of Liberty Media’s Series A Liberty SiriusXM Common Stock. The conglomerate made these purchases over six days this month, acquiring over 4.3 million shares at prices ranging from $25.67 to $27.76. This has increased Berkshire Hathaway’s stake in Liberty Media Corp to a total of 69,044,244 shares. These transactions were disclosed through t…