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

Acorda Therapeutics, Inc. (symbol: ACOR) was one of the worst losers of the
trading day today (2016-09-26), losing -15.73%. The number of shares that
changed hands was 2,835,147, or about 6 times the average daily volume in
the stock.
The closing price was $22.99, amounting to a market cap of $1,060,000,000,
about -47.31% off the highest price in the last 12 months. The stock has
been trading at a range between $22.81 and $43.63.
ACOR is in the Biotechnology: Biological Products (No Diagnostic
Substances) industry, part of the Health Care sector. It first went public
in 2006.