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

AMAG Pharmaceuticals, Inc. (symbol: AMAG) was one of the worst losers of
the trading day today (2017-01-09), losing -35.57%. The number of shares
that changed hands was 14,485,291, or about 16 times the average daily
volume in the stock.
The closing price was $23.0, amounting to a market cap of $786,810,000,
about -37.54% off the highest price in the last 12 months. The stock has
been trading at a range between $17.92 and $36.83.
AMAG is in the Major Pharmaceuticals industry, part of the Health Care
sector.
Looking at its valuation, the stock is now trading at 52.87 times earnings.