Warren Buffett Is Buying Sirius XM Stock. Should You?

The stock is down 63% from all-time highs.A curious stock purchase landed on the Berkshire Hathaway 13-F this quarter: Sirius XM (SIRI -6.19%). The team at Berkshire, led by Warren Buffett, increased its position by 262% in the quarter after the stock began to fall precipitously, with shares down around 50% year to date. Seeing as this was just a small position in the Berkshire portfolio, it is possible that Todd Combs or Ted Weschler, Buffett's lieutenants, bought the stock for Berkshire Hathaway.Either wa ...