Warren Buffett’s Berkshire Hathaway has spent another $54 million to purchase Sirius XM stock, giving it a stake of more than 35% in the satellite-radio company.

Warren Buffett’s Berkshire Hathaway (BRK.A) (BRK.B) has recently increased its stake in Sirius XM Holdings Inc. (SIRI), now owning over 35% of

The Omaha, Nebraska-based conglomerate purchased roughly 2.3 million shares for about $54 million in separate transactions Thursday through Monday.

This was the stock's second consecutive day of gains.

Sirius XM Holdings (NASDAQ: SIRI) has had a rough time of late, falling nearly 60% in value over the past 12 months. Berkshire Hathaway, led by Warren Buffett, now holds a stake worth several billion dollars.

Shares of Sirius XM Holdings, Inc. (SIRI) rose early Tuesday as Warren Buffett-led Berkshire Hathaway, Inc. (BRK-A) (BRK-B) disclosed in a late Monday SEC filing that it has increased its stake in the New York-based broadcasting company.

Warren Buffett’s Berkshire Hathaway (NYSE:BRK.A) (NYSE:BRK.B) has further raised its bet on Sirius XM Holdings (NASDAQ:SIRI), boosting its stake to over 35%, latest regulatory filings show. The conglomerate acquired around 2.

After 30 years, an investor who bought in at the IPO, held on, and reinvested all of their dividends, would have seen a $75 initial investment turn into a holding worth just $42 today. But don't give up on the stock just yet. One famous investor is betting big on a comeback.