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

Biogen Inc. (symbol: BIIB) was one of the worst losers of the trading day
today (2016-06-07), losing -12.76%. The number of shares that changed hands
was 8,863,636, or about 6 times the average daily volume in the stock.
The closing price was $252.86, amounting to a market cap of
$55,390,000,000, about -39.94% off the highest price in the last 12 months.
The stock has been trading at a range between $242.07 and $420.99.
BIIB is in the Biotechnology: Biological Products (No Diagnostic
Substances) industry, part of the Health Care sector.
Looking at its valuation, the stock is now trading at 15.54 times earnings.