$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 (2016-12-07), losing -8.99%. The number of shares that changed
hands was 10,051,279, or about 1 times the average daily volume in the
stock.
The closing price was $16.61, amounting to a market cap of $4,760,000,000,
about -9.19% 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.