Warren Buffett acquired 43.2 Million Liberty Media Corp. (Tracking Stock - SiriusXM) Series C shares worth $1.21 Billion. That's 0.36% of their equity portfolio (22nd largest holding). The investor owns 4.37% of the outstanding Liberty Media Corp. (Tracking Stock - SiriusXM) Series C stock. The first Liberty Media Corp. (Tracking Stock - SiriusXM) Series C trade was made in Q2 2016. Since then Warren Buffett bought shares five more times and sold shares on one occasions. The investor's estimated purchase price is $1.5 Billion, resulting in a loss of 20%.