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

ACADIA Pharmaceuticals Inc. (symbol: ACAD) was one of the biggest winners
of the trading day today (2016-12-20), gaining 12.35%. The number of shares
that changed hands was 18,509,532, or about 7.5 times the average daily
volume in the stock.
The closing price was $28.57, amounting to a market cap of $3,460,000,000,
about -32.76% off the highest price in the last 12 months. The stock has
been trading at a range between $16.64 and $42.49.
ACAD is in the Major Pharmaceuticals industry, part of the Health Care
sector. It first went public in 1985.