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

ARIAD Pharmaceuticals, Inc. (symbol: ARIA) was one of the worst losers of
the trading day today (2016-10-24), losing -9.73%. The number of shares
that changed hands was 15,346,677, or about 2 times the average daily
volume in the stock.
The closing price was $9.37, amounting to a market cap of $1,810,000,000,
about -34.66% off the highest price in the last 12 months. The stock has
been trading at a range between $4.37 and $14.34.
ARIA is in the Biotechnology: Biological Products (No Diagnostic
Substances) industry, part of the Health Care sector. It first went public
in 1994.