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

TESARO, Inc. (symbol: TSRO) was one of the worst losers of the trading day
today (2016-11-15), losing -11.76%. The number of shares that changed hands
was 4,502,006, or about 4 times the average daily volume in the stock.
The closing price was $131.04, amounting to a market cap of $6,770,000,000,
about -11.9% off the highest price in the last 12 months. The stock has
been trading at a range between $29.51 and $148.74.
TSRO is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2012.