Warren Buffett acquired 43.2 Million Liberty Media Corp. (Tracking Stock - SiriusXM) Series C shares worth $1.7 Billion. That's 0.56% of their equity portfolio (18th largest holding). The investor owns 6.02% 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 stake costed the investor $1.5 Billion, netting the investor a gain of 13% so far.