$ACHN is one of biggest winner #stocks today. read more:

Achillion Pharmaceuticals, Inc. (symbol: ACHN) was one of the biggest
winners of the trading day today (2016-02-12), gaining 7.82%. The number of
shares that changed hands was 2,050,166, or about 1.0 times the average
daily volume in the stock.
The closing price was $6.07, amounting to a market cap of $828,820,000,
about -53.09% off the highest price in the last 12 months. The stock has
been trading at a range between $5.57 and $12.94.
ACHN is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 2006.