The satellite radio giant, led by CEO Jim Meyer and controlled by John Malone's Liberty Media, added 431,000 net new subscribers in the period, up from 267,000 in the year-ago period. The company ended March with a total of 27.74 million subscribers.
Sirius posted quarterly earnings of $106 million, up 12 percent compared with the $94 million recorded in the year-ago period. Revenue rose 8 percent to $1.08 billion.
Said Meyer: "The year is off to a fantastic start at SiriusXM. We are increasing our subscriber guidance to approximately 1.4 million net additions and revenue guidance to approximately $4.47 billion after reporting our best first quarter for self-pay subscriber additions since 2008.
Mayer added, "Our results demonstrate that SiriusXM's bundle of live news and sports, exclusive talk and comedy, and curated, commercial-free music is resonating with more and more consumers every day."