$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 (2015-09-02), losing -16.99%. The number of shares
that changed hands was 14,344,007, or about 4 times the average daily
volume in the stock.
The closing price was $7.55, amounting to a market cap of $1,430,000,000,
about -25.02% off the highest price in the last 12 months. The stock has
been trading at a range between $4.9 and $10.07.
ARIA is in the Biotechnology: Biological Products (No Diagnostic
Substances) industry, part of the Health Care sector. It first went public
in 1994.