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

Perrigo Company plc Ordinary Sh (symbol: PRGO) was one of the worst losers
of the trading day today (2016-04-22), losing -5.7%. The number of shares
that changed hands was 8,645,001, or about 5 times the average daily volume
in the stock.
The closing price was $121.35, amounting to a market cap of
$17,770,000,000, about -41.01% off the highest price in the last 12 months.
The stock has been trading at a range between $120.1 and $205.72.
PRGO is in the Major Pharmaceuticals industry, part of the Health Care
sector.