Berkshire Hathaway (BRK-B, BRK-A) has upped its stake in radio broadcaster SiriusXM Holdings (SIRI) to 32% after purchasing 3.6 million shares — or $87 million worth — last week, according to SEC filings. Market Domination hosts Julie Hyman and Josh Lipton report the latest trades from the Warren Buffett-owned firm.

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This post was written by Luke Carberry Mogan.