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

Stericycle, Inc. (symbol: SRCL) was one of the worst losers of the trading
day today (2015-10-23), losing -19.28%. The number of shares that changed
hands was 8,070,115, or about 10 times the average daily volume in the
stock.
The closing price was $120.31, amounting to a market cap of
$10,210,000,000, about -20.62% off the highest price in the last 12 months.
The stock has been trading at a range between $110.56 and $151.57.
SRCL is in the Environmental Services industry, part of the Basic
Industries sector. It first went public in 1996.
Looking at its valuation, the stock is now trading at 34.47 times earnings.