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Why Pandora Media Inc. Shares Popped

Steve Symington
January 6, 2014

Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of Pandora Media Inc. (NYSE: P) jumped more than 14% Monday after the Internet radio specialist both released December audience metrics and announced a new automotive advertising campaign.

So what: First, Pandora says active listeners and listener hours for December each rose 13% year-over-year to a record 76.2 million an