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

Exelixis, Inc. (symbol: EXEL) was one of the worst losers of the trading
day today (2016-12-22), losing -8.46%. The number of shares that changed
hands was 11,251,005, or about 2 times the average daily volume in the
stock.
The closing price was $14.94, amounting to a market cap of
$4,279,650,000,000, about -18.32% off the highest price in the last 12
months. The stock has been trading at a range between $3.55 and $18.29.
EXEL is in the Biotechnology: Commercial Physical & Biological Resarch
industry, part of the Health Care sector. It first went public in 2000.