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

Keryx Biopharmaceuticals, Inc. (symbol: KERX) was one of the worst losers
of the trading day today (2015-07-24), losing -15.33%. The number of shares
that changed hands was 3,934,712, or about 2 times the average daily volume
in the stock.
The closing price was $7.84, amounting to a market cap of $812,190,000,
about -57.58% off the highest price in the last 12 months. The stock has
been trading at a range between $7.67 and $18.48.
KERX is in the Major Pharmaceuticals industry, part of the Health Care
sector.