$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 (2016-08-23), losing -6.39%. The number of shares that changed hands
was 1,787,649, or about 1 times the average daily volume in the stock.
The closing price was $92.76, amounting to a market cap of $4,760,000,000,
about -6.57% off the highest price in the last 12 months. The stock has
been trading at a range between $29.51 and $99.28.
TSRO is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2012.