$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 (2015-09-03), losing -16.09%. The number of shares
that changed hands was 4,190,907, or about 3 times the average daily volume
in the stock.
The closing price was $5.06, amounting to a market cap of $532,170,000,
about -72.35% off the highest price in the last 12 months. The stock has
been trading at a range between $5.0 and $18.3.
KERX is in the Major Pharmaceuticals industry, part of the Health Care
sector.