$P is one of biggest losers #stocks today. read more:

Pandora Media, Inc. Common Stoc (symbol: P) was one of the worst losers of
the trading day today (2016-01-04), losing -8.65%. The number of shares
that changed hands was 16,988,290, or about 2 times the average daily
volume in the stock.
The closing price was $12.25, amounting to a market cap of $2,610,000,000,
about -45.8% off the highest price in the last 12 months. The stock has
been trading at a range between $11.38 and $22.6.
P is in the Broadcasting industry, part of the Consumer Services sector. It
first went public in 2011.