Pandora stock is soaring following a report that SiriusXM is in talks to buy it

Pandora stock is soaring on a New York Post $4 that satellite-radio powerhouse Sirius XM is in "active discussions" to buy the internet-radio pioneer.

The stock is up ~7.5% in trading this morning.

Pandora has endured on-an-off M&A rumors for months, as it tries to re-invent its business with the launch of an on-demand competitor to Spotify and Apple Music. That product finished its rollout last month.

Liberty Media, which controls satellite-radio powerhouse Sirius XM, has been seen as the only real buyer in town.

That means Pandora has had to endure $4 whenever Liberty Media CEO Greg Maffei talks publicly about the company - which is often.

Most recently, earlier this month, Maffei talked unenthusiastically about Pandora's KKR investment. In its quarterly earnings report, Pandora announced it had taken $150 million from private-equity firm KKR, and given KKR a seat in a boardroom shakeup. "My guess is they needed cash," $4. "I'm not sure it creates an opportunity. It speaks to the cash needs of their business."

Maffei reportedly made an informal offer for Pandora at $4 a share early last year. But in March, Maffei said that Pandora was "overvalued," and that $10 per share was something that could work. On Thursday morning, the stock was trading at around $9.60 per share.

Visit $4 for constantly updated market quotes for individual stocks, ETFs, indices, commodities and currencies traded around the world. $4