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

RPX Corporation (symbol: RPXC) was one of the worst losers of the trading
day today (2016-05-04), losing -11.35%. The number of shares that changed
hands was 798,367, or about 2 times the average daily volume in the stock.
The closing price was $9.53, amounting to a market cap of $517,090,000,
about -44.95% off the highest price in the last 12 months. The stock has
been trading at a range between $9.0 and $17.31.
RPXC is in the Multi-Sector Companies industry, part of the Miscellaneous
sector. It first went public in 2011.
Looking at its valuation, the stock is now trading at 13.42 times earnings.