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

Anacor Pharmaceuticals, Inc. (symbol: ANAC) was one of the worst losers of
the trading day today (2016-04-19), losing -9.5%. The number of shares that
changed hands was 2,225,782, or about 2 times the average daily volume in
the stock.
The closing price was $60.46, amounting to a market cap of $2,670,000,000,
about -61.47% off the highest price in the last 12 months. The stock has
been trading at a range between $52.0 and $156.93.
ANAC is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2010.