$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 (2016-02-23), losing -11.25%. The number of shares
that changed hands was 848,112, or about 1 times the average daily volume
in the stock.
The closing price was $66.97, amounting to a market cap of $2,950,000,000,
about -57.32% off the highest price in the last 12 months. The stock has
been trading at a range between $42.47 and $156.93.
ANAC is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2010.